County of Los Angeles v. Superior Ct. ( 2021 )


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  • Filed 6/15/21
    CERTIFIED FOR PUBLICATION
    COURT OF APPEAL, FOURTH APPELLATE DISTRICT
    DIVISION ONE
    STATE OF CALIFORNIA
    COUNTY OF LOS ANGELES,                 D077794
    Petitioner,                    (Super. Ct. No. 30-2014-00725287-
    CU-BT-CXC)
    v.
    THE SUPERIOR COURT OF
    ORANGE COUNTY,
    Respondent;
    JOHNSON & JOHNSON et al.,
    Real Parties in Interest.
    COUNTY OF ALAMEDA,                     D077795
    Petitioner,                    (Super. Ct. No. 30-2014-00725287-
    CU-BT-CXC)
    v.
    THE SUPERIOR COURT OF
    ORANGE COUNTY,
    Respondent;
    JOHNSON & JOHNSON et al.,
    Real Parties in Interest.
    CONSOLIDATED ORIGINAL PROCEEDINGS in mandate.
    Peter J. Wilson, Judge. Petitions granted.
    Mary C. Wickham and Rodrigo A. Castro-Silva, County Counsel,
    Robert E. Ragland, Scott Kuhn, Andrea Ross, Tracy Hughes, Deputies
    County Counsel; Bradley Bernstein Sands and Erin B. Bernstein for
    Petitioner County of Los Angeles.
    Donna R. Ziegler, County Counsel, Kathleen A. Pacheco, Raymond J.
    Leung, Deputies County Counsel, for Petitioner County of Alameda.
    O’Melveny & Myers, Michael G. Yoder, Amy J. Laurendeau, Charles C.
    Lifland, Sabrina H. Strong, Amy R. Lucas, Jonathan P. Schneller for Real
    Parties in Interest Johnson & Johnson et al.
    I.
    INTRODUCTION
    In the lawsuit underlying these consolidated writ proceedings, the
    People of the State of California, by and through the Santa Clara County
    Counsel, the Orange County District Attorney, the Los Angeles County
    Counsel, and the Oakland City Attorney, filed an action against defendants—
    various pharmaceutical companies involved in the manufacture, marketing,
    distribution, and sale of prescription opioid medications. (People v. Purdue
    Pharma (Super Ct. Orange County, 2014, No. 30-2014-00725287-CU-BT-
    CXC) (“Underlying Action”).)
    In the operative sixth amended complaint, the People allege that the
    defendants made false and misleading statements as part of a deceptive
    marketing scheme designed to minimize the risks of opioid medications and
    inflate their benefits. This scheme, the People allege, caused a public health
    crisis in California by dramatically increasing the number of opioid
    2
    prescriptions, the use and abuse of opioids, and opioid-related deaths. The
    operative complaint contains causes of action for violations of the False
    Advertising Law (Bus. & Prof. Code, § 17500 et seq.), the Unfair Competition
    Law (Bus & Prof. Code, § 17200 et seq.), and the public nuisance statutes
    (Civ. Code, §§ 3479, 3480) and seeks declaratory and injunctive relief, as well
    as civil penalties.
    In Board of Registered Nursing v. Superior Court (2021) 
    59 Cal.App.5th 1011
     (Board of Registered Nursing), this court recently considered the
    propriety of several discovery orders in the Underlying Action that compelled
    four nonparty state agencies to produce to defendants various categories of
    documents related to opioids.1 (Id. at p. 1021.) Of relevance to these writ
    proceedings, the Board of Registered Nursing court considered the legality of
    a superior court order requiring the production of prescription records
    contained in the state’s Controlled Substance Utilization Review and
    Evaluation System (CURES) database. (Id. at p. 1022.) The order required
    the Department of Justice to produce CURES prescription records for
    individually identified patients to an outside vendor. The vendor would then
    replace patient names with unique identifiers, cross-reference the records
    with other datasets in the vendor’s possession, and provide the linked
    deidentified datasets to the defendants. (Id. at p. 1045.)2
    1    The Board of Registered Nursing court noted that the discovery was
    sought on behalf of all defendants in the Underlying Case and that all
    defendants appeared as real parties in the writ proceedings in this court.
    (Board of Registered Nursing, supra, 59 Cal.App.5th at p. 1024, fn. 2.)
    2     The court’s order compelling production required either “(1) the
    production of patient identifying data to defendants’ vendor or (2) the
    production of data with patient identifying data replaced with a unique
    identifier supplied by defendants’ vendor that would allow the vendor to
    3
    In a writ proceeding challenging the propriety of the order, after
    observing that the production of identified patient data to an outside vendor
    for deidentification “would . . . implicate the privacy rights of the patients”
    (Board of Registered Nursing, supra, 59 Cal.App.5th at p. 1045), the Board of
    Registered Nursing court concluded that defendants “ha[d] not justified such
    a sweeping production of personal and private medical data” under the law
    governing nonparty discovery. (Id. at p. 1038, citing Calcor Space Facility,
    Inc. v. Superior Court (1997) 
    53 Cal.App.4th 216
    , 223 (Calcor).) Accordingly,
    the Board of Registered Nursing court held that the superior court abused its
    discretion in ordering production of the CURES records.
    The present writ proceedings pertain to another discovery dispute in
    the Underlying Action. The dispute arose after several of the defendants in
    the Underlying Action (“Johnson & Johnson defendants”),3 served subpoenas
    on two nonparty counties, petitioners County of Los Angeles and County of
    Alameda, seeking records of patients in various county programs, including
    individual prescription data and individual patient records related to
    substance abuse treatment.
    In its petition, the County of Los Angeles describes the documents at
    issue as including “detailed data for over one million dispensed medications,
    along with pharmacy and prescriber identifiers, as well as over 1.7 million
    associated encounters, including diagnoses, procedures, medical service,
    treating provider and attending (billing) provider” (italics omitted) and
    cross-reference CURES data with other data in its possession (e.g., insurance
    claim data).” (Board of Registered Nursing, supra, 59 Cal.App.5th at
    p. 1045.)
    3    The Johnson & Johnson defendants are real parties Johnson &
    Johnson, Janssen Pharmaceuticals, Inc., and Ortho-McNeil-Janssen
    Pharmaceuticals, Inc.
    4
    “records for 5,867 individuals and over 65,000 associated encounters,
    including diagnoses, procedures, and other clinical information,” pertaining
    to “patients diagnosed with or treated for opioid use disorder, opioid
    addiction, or overdose at LA County facilities.” In its petition, the County of
    Alameda describes the documents as including “patient-level data related to
    substance use treatment, pharmacy records, encounter data, and other
    sensitive information.”4
    After petitioners and the Johnson & Johnson defendants engaged in
    various informal and formal means to attempt to resolve the dispute, the
    superior court issued a discovery order granting the Johnson & Johnson
    defendants’ motions to compel production of the records. As with the CURES
    data at issue in Board of Registered Nursing, the court’s order directed
    petitioners to provide the records on a personally “identified” basis to a
    vendor that would “de-identify [the] data and make it cross-referenceable
    against other de-identified data processed by [the vendor] in this case.” The
    4    Similarly, in their informal response in this court, the Johnson &
    Johnson defendants summarized the records at issue as follows:
    “The specific records at issue here are: (1) opioid
    prescription records and healthcare services records for
    patients with opioid-related diagnoses from the Los Angeles
    County Department of Health’s Online Real-time
    Centralized Health Information Database (‘ORCHID’),
    which tracks healthcare services provided by publicly
    funded healthcare centers in Los Angeles County [citation];
    (2) patient-level data from the Los Angeles County
    Participant Reporting System (‘LACPRS’), a repository of
    data used to measure substance abuse treatment and/or
    recovery outcomes measures [citation]; and (3) Medi-Cal
    data involving opioids for all patients treated by Alameda
    County, including prescription data, claims data, or
    encounter data [citation].”
    5
    court’s order specifies that “[o]nly fully de-identified data will be provided by
    [the vendor] to defendants (or any other party in this case).”
    Each petitioner filed a petition for writ of mandate in this court,
    seeking vacatur of the superior court’s order compelling production of the
    documents. The petitioners claim that the discovery order implicates the
    state constitutional privacy rights of the individuals whose records the
    superior court ordered produced, among other arguments. We consolidated
    the petitions and issued an order to show cause.
    In determining whether a discovery order would violate state
    constitutional privacy rights, we apply the framework established in Hill v.
    National Collegiate Athletic Assn. (1994) 
    7 Cal.4th 1
     (Hill). (See Williams v.
    Superior Court (2017) 
    3 Cal.5th 531
    , 552, 556 (Williams) [stating that Hill
    applies to a discovery dispute that “requires a court to reconcile asserted
    privacy interests with competing claims for access”].) In applying the Hill
    test, “[t]he party asserting a privacy right must establish a legally protected
    privacy interest, an objectively reasonable expectation of privacy in the given
    circumstances, and a threatened intrusion that is serious.” (Williams, supra,
    at p. 552, citing Hill, 
    supra,
     at pp. 35–37.) “The party seeking information
    may raise in response whatever legitimate and important countervailing
    interests [the] disclosure serves,” and “[a] court must then balance these
    competing considerations.” (Williams, supra, at p. 552, citing Hill, 
    supra,
     at
    pp. 37–40.)
    As we explain in part III, post, we conclude that petitioners have
    established that the superior court’s order threatens a serious intrusion into
    the privacy interests of the patients whose records are at issue. In
    considering whether the Johnson & Johnson defendants have “demonstrated,
    under the heightened standard applicable to constitutional rights of privacy,
    6
    a practical necessity for discovery [of the records],” (John B. v. Superior Court
    (2006) 
    38 Cal.4th 1177
    , 1201), we observe that the Johnson & Johnson
    defendants seek to obtain opioid prescription data similar to the CURES data
    at issue in Board of Registered Nursing, as well as substance abuse treatment
    records, which threatens to cause an even more substantial invasion of
    privacy rights. Yet, the Johnson & Johnson defendants fail to provide a
    justification for the discovery of such records that differs in any material way
    from that which this court found insufficient in Board of Registered Nursing
    to justify discovery under the broad Calcor standard applicable to nonparty
    discovery requests generally. (See Board of Registered Nursing, supra,
    59 Cal.App.5th at p. 1039 [“ ‘Although the scope of civil discovery is broad, it
    is not limitless,’ ” quoting Calcor, supra, 53 Cal.App.4th at p. 223].)
    Therefore, and for reasons we explain more fully in part III, post, we conclude
    that the Johnson & Johnson defendants have failed to demonstrate that their
    interests in obtaining “such a vast production of medical information” (Board
    of Registered Nursing, supra, at p. 1046) outweigh the significant privacy
    interests that the nonparty petitioners have identified. (See Williams, supra,
    3 Cal.5th at p. 556 [where “a discovery request seeks information implicating
    the constitutional right of privacy,” the party seeking discovery must make a
    showing of need greater than that needed for discovery requests generally].)
    Accordingly, we grant petitioners’ writ petitions and direct the superior
    court to vacate its order compelling production of the requested documents
    and to enter a new order denying Johnson & Johnson defendants’ motions to
    compel.5
    5     The petitioners also contend that the superior court’s order should be
    vacated because it orders disclosure of substance use disorder patient
    records, in violation of federal law (42 C.F.R § 2 et seq.) and because the
    superior court lacked authority to order the public entities to enter into a
    7
    II.
    FACTUAL AND PROCEDURAL BACKGROUND
    A. The operative complaint
    In June 2018, the People filed the operative complaint against
    defendants. According to the operative complaint, the defendants engaged in
    wide ranging illegal misconduct designed to promote the use of opioids. The
    People alleged that defendants targeted susceptible prescribers and
    vulnerable patient populations with false and misleading statements about
    opioids. Specifically, according to the People, the defendants falsely
    downplayed, and failed to disclose, the known risks of long-term opioid use.
    Defendants also “[g]rossly [o]verstated” the benefits of chronic opioid therapy.
    The operative complaint alleges that defendants carried on this “marketing
    scheme” through varied means, including the use of direct marketing of
    branded opioids and the use of “seemingly independent third parties.” The
    People further allege that defendants’ efforts led to a huge increase in the
    number of opioid prescriptions and the use of such drugs, which has resulted
    in a public health crisis that includes high rates of opioid abuse and addiction
    and ancillary social costs.
    The operative complaint relies on such allegations to state causes of
    action for false advertising (Bus & Prof. Code, § 17500), unfair competition
    (Bus & Prof. Code, § 17200), and public nuisance. (Civ. Code, §§ 3479, 3480.)
    The People seek civil penalties for each act of false advertising and
    unfair competition and an order requiring defendants to abate the public
    nuisance. In addition, the People seek declaratory and injunctive relief.
    contract with an intermediary for the purpose of deidentifying the
    documents. In light of our granting the petitions for the reasons stated in the
    text, we need not, and do not, address these additional arguments for
    vacatur.
    8
    B. The underlying discovery dispute
    In December 2018, the Johnson & Johnson defendants6 served
    business record subpoenas on two agencies of the County of Los Angeles
    seeking claims data for opioid prescriptions, healthcare services, and
    substance-abuse treatment. The subpoenas sought broad categories of
    information including:
    “All Documents and Communications concerning or
    relating to any assessment of actual or potential harm to
    specific Patients or other specific individuals as a result of
    any Subject Opioid or any Defendant’s Marketing,
    Educational Activities, or statements about any Subject
    Opioid.”
    “Participant-level Claims Data showing the full Medicaid or
    other Program Claims history for prescriptions and other
    health care services submitted to Medicaid or any other
    Program, whether reimbursed or not, for all Patients who
    received a prescription for any Subject Opioid.”
    The Johnson & Johnson defendants served similar subpoenas on
    various County of Alameda agencies.
    The County of Los Angeles identified two sets of responsive data:
    (1) opioid prescription and medical encounter data from publicly funded
    healthcare centers tracked by the County of Los Angeles Department of
    Health Services’ Online Real-time Centralized Health Information Database
    (“ORCHID”); and (2) patient-level claims data measuring substance-abuse
    6     Although the December 6, 2018 subpoena contained in the exhibits to
    the County of Los Angeles’s writ petition appears to have been served by
    defendants other than the Johnson & Johnson defendants, the Johnson &
    Johnson defendants admit in their return “that they served [County of Los
    Angeles] with a subpoena on December 6, 2018.” Accordingly, we refer to the
    discovery sought in this case from the County of Los Angeles as having been
    sought by the Johnson & Johnson defendants.
    9
    treatment recovery outcomes tracked by the Los Angeles County Participant
    Reporting System (“LACPRS”). The County of Alameda identified data for
    patients that the county treats through its implementation of the Medi-Cal
    program “including prescription data, claims data, [and] encounter data.”
    After engaging in various informal discovery efforts, the Johnson &
    Johnson defendants filed motions to compel the petitioners to provide the
    requested data on an identified basis7 to an outside vendor, Rawlings &
    Associations (Rawlings). Rawlings would in turn “de-identify” the data by
    assigning unique identifiers to each record that would make the data “cross-
    walkable,” with other data processed by Rawlings. The deidentified, but
    cross-walkable, records would then be shared with the Johnson & Johnson
    defendants.
    Petitioners opposed the motions on several grounds, including that
    privacy protections bar the production of identifiable patient data to a third
    party. The Johnson & Johnson defendants argued in turn that a March 2019
    Stipulated Qualified Protective Order for Protected Health Information
    (Protective Order) previously entered in the case would sufficiently protect
    any privacy interests.
    C. The discovery referee’s reports and recommendations
    After the parties submitted briefing and a discovery referee held
    several hearings on the discovery issues presented in these writ proceedings
    as well as numerous other discovery disputes, the discovery referee issued
    two reports and recommendations to grant the Johnson & Johnson
    defendants’ motions to compel. As to the County of Los Angeles, with respect
    to the ORCHID data, the referee agreed that the Protective Order “in
    7      By “on an identified basis,” we mean “containing personal information
    sufficient to identify an individual person.”
    10
    practice, requires that the County produce its data to Rawlings so that
    Rawlings can de-identify the data and make it cross-walkable.”8 With
    respect to the LACPRS data, the referee rejected the County of Los Angeles’s
    privacy arguments based on federal regulations governing substance abuse
    treatment records, reasoning that “the focus must be on whether the
    requesting party receives the data in de-identified form, not a third-party
    vendor.” With respect to the County of Alameda, the referee issued a report
    determining that “[County of] Alameda fails to provide a sufficient basis to
    object to the production of the requested information where, as here, the
    information will be produced pursuant to a stringent . . . Protective Order.”
    D. Petitioners’ objections to the discovery referee’s report and
    recommendations
    Petitioners each filed objections to the discovery referee’s report and
    recommendations. Among other arguments, the County of Los Angeles
    argued that “[t]here is no basis, legal or factual, to order the reproduction of
    identified patient data,” and that “[t]he Protective Order does not
    contemplate, let alone require, that any entity must contract with and
    produce identified heath data to a third-party vendor, and such a
    requirement would violate the Protective Order as well as numerous privacy
    law protections.” Specifically, the County of Los Angeles contended that “to
    produce identifiable protected health information to any party or third party
    would violate . . . the constitutional rights of third parties,” among other
    laws.
    8     The County of Los Angeles had previously produced the ORCHID data
    in a deidentified format and the referee noted that the county argued that it
    should not be compelled to “re-produce its ORCHID data in a manner which
    would allow the datasets to be cross-referenced with other datasets.”
    11
    In its objection, the County of Alameda raised numerous arguments,
    including those rooted in the privacy rights of the patients whose medical
    data would be impacted by the production. Specifically, the County of
    Alameda referred to the “privacy objections over having to produce
    completely unredacted patient health information, including substance use
    disorder information, to Rawlings,” that it had raised before the discovery
    referee. For example, the County of Alameda referred to a supplemental
    brief that it had filed opposing the Johnson & Johnson defendants’ motion to
    compel that stated the following:
    “[The Johnson & Johnson] Defendants have made NO
    showing of why patient level data for the entirety of
    Alameda County. . . are relevant. And they certainly do not
    present any viable argument that the privacy interests of
    these individuals are outweighed by what is, in essence, a
    fishing expedition that casts a wide net for information
    from a non-party.”
    E. The Johnson & Johnson defendants’ responses
    The Johnson & Johnson defendants filed responses to the petitioners’
    objections. With respect to the County of Los Angeles’s objections, the
    Johnson & Johnson defendants noted that the County had “mention[ed]—
    again, without explanation—‘the constitutional rights of third parties.’ ” The
    Johnson & Johnson defendants argued that the superior court had ruled,
    with respect to previous discovery issues in the case, that deidentification
    and the Protective Order would suffice to protect constitutional privacy rights
    and that “ ‘[t]he limited invasion being permitted here is justified due to the
    relevance of the discovery to Plaintiffs[’] claims.’ ” The Johnson & Johnson
    defendants argued that the court should reach the same conclusion with
    respect to the County of Los Angeles’s production.
    12
    In their opposition to the County of Alameda’s objections, the Johnson
    & Johnson defendants argued that the Protective Order and “precautions
    taken by the parties and third parties operating under it ensure that privacy
    laws will be fully complied with while providing the parties access to claims
    data critical to testing Plaintiff[s’] theory of the case.”
    F. The superior court’s order granting the Johnson & Johnson defendants’
    motions to compel
    After a hearing, the superior court entered an order on July 6, 2020
    granting the Johnson & Johnson defendants’ motions to compel. The court
    ordered the County of Los Angeles “to provide to Rawlings the identified data
    for the County’s previous ORCHID production to defendants, so that
    Rawlings can de-identify all such data and make it cross-referenceable
    against other de-identified data processed by Rawlings in this case.” The
    court also ordered the County of Los Angeles to produce the LACPRS data to
    Rawlings for deidentification. The court specified that “[o]nly fully de-
    identified data will be provided by Rawlings to defendants (or any other party
    in this case).” The court also ordered the County of Alameda to provide the
    “Medi-Cal claims and prescription data,” specified in the discovery referee’s
    report and recommendations on the same terms as the court specified for the
    County of Los Angeles’s production.
    The superior court also directed the Johnson & Johnson defendants to
    modify the Protective Order to make Rawlings subject to the Protective
    Order; to ensure that Rawlings expressly consented to such modification and
    agreed to act in compliance with various provisions of federal law; and to
    provide that all information produced by a nonparty would be subject to the
    Protective Order.
    13
    G. Writ proceedings in this court
    In August 2020, petitioners filed petitions for writ of mandate9 seeking
    reversal of the superior court’s July 6 order, together with requests that this
    court take judicial notice of the state agencies’ petitions for writ of mandate
    in Board of Registered Nursing.
    After soliciting and receiving informal responses from the Johnson &
    Johnson defendants with respect to each petition, this court summarily
    denied the petitions.
    The Supreme Court granted petitioners’ petitions for review and
    transferred the matters to this court with directions to vacate our orders
    denying the petitions for writ of mandate and to issue orders directing
    respondent superior court to show cause why the relief sought in the petitions
    should not be granted. We acted in accordance with the Supreme Court’s
    directions and consolidating the proceedings.
    The Johnson & Johnson defendants filed a return by way of
    answer/demurrer and a request that we take judicial notice of: (1) the June
    8, 2018 operative sixth amended complaint in the Underlying Action; (2) the
    Protective Order as revised pursuant to the July 6 order, and (3) the
    February 26, 2020 hearing transcript of the discovery proceedings that led to
    the writ proceedings in this court in Board of Registered Nursing.
    9     The day after filing their initial petitions, petitioners each filed
    amended petitions. For ease of reference, we refer to the amended petitions
    as the petitions at issue in these proceedings. Although the writ petitions
    were initially filed in Court of Appeal, Fourth District, Division Three, the
    administrative presiding justice transferred the petitions to this division
    pursuant to California Rules of Court, rule 10.1000(b)(1)(A).
    14
    Petitioners thereafter filed a reply, and both parties, pursuant to our
    request, filed supplemental letter briefs concerning Board of Registered
    Nursing.10
    III.
    DISCUSSION
    Petitioners claim that the superior court’s July 6 discovery order
    threatens to intrude on the state constitutional privacy rights (Cal. Const.,
    art. I, § 1) of the patients whose medical information would be affected by the
    order.11
    10     We grant petitioners’ August 11, 2020 unopposed requests that we take
    judicial notice of the state agencies’ petitions for writ of mandate in the
    Board of Registered Nursing proceedings in this court. (See Evid. Code,
    §§ 452, subd. (c) [permitting the taking of judicial notice of the “[o]fficial acts
    of the legislative, executive, and judicial departments of the United States
    and of any state of the United States”], 455, subd. (a), 459, subd. (c)
    [specifying the manner by which a reviewing court may take judicial notice of
    a “matter was not theretofore judicially noticed in the action”].)
    We also grant the Johnson & Johnson defendants’ unopposed December
    16, 2020 request that we take judicial notice of: (1) the June 8, 2018
    operative sixth amended complaint in the Underlying Action; (2) the August
    17, 2020 revised Protective Order, and (3) the February 26, 2020 hearing
    transcript of the discovery proceedings that led to the writ proceedings in this
    court in Board of Registered Nursing. (See Evid. Code, §§ 452, subd. (c), 455,
    subd. (a), 459, subd. (c) [specifying the manner by which reviewing courts
    may take judicial notice of judicial records].)
    11     Although petitioners filed separate writ petitions in this court, they
    joined in each other’s petitions and filed a consolidated reply. In addition,
    petitioners’ state constitutional privacy claims are not materially distinct.
    Thus, we address the state constitutional privacy claims raised in the writ
    petitions jointly as a single claim.
    15
    A. Preliminary matters
    Before considering the merits of petitioners’ claim, we address three
    preliminary matters presented by their writ petitions.
    First, although not specifically addressed in the briefing in these writ
    proceedings, it is well established that, under appropriate circumstances, a
    litigant “may assert the privacy rights of third parties.” (Tien v. Superior
    Court (2006) 
    139 Cal.App.4th 528
    , 539.) One such circumstance is where the
    litigant’s interests align with those of the third party and the third party’s
    “rights are ‘likely to be diluted or adversely affected’ unless [the litigant] is
    permitted to assert their rights on their behalf.” (Lewis v. Superior Court
    (2017) 
    3 Cal.5th 561
    , 570 (Lewis) [concluding that physician had standing to
    assert privacy rights of patients whose prescription records had been
    accessed by state board].) For the same reasons that the Lewis court
    concluded that a doctor could assert his patients’ privacy interests in their
    prescription records, we conclude that the petitioners’ may assert the privacy
    interests of the patients whose medical information they possess. (See 
    ibid.
    [doctor could assert privacy rights of patients because: (1) patients might
    “hesitate to seek appropriate medical treatment,” if records were disclosed
    and doctor shared patients’ interest in seeking appropriate medical treatment
    and; (2) patients were “unable to assert their own rights because they were
    never given notice that their records were accessed”].)
    Second, although discovery orders are ordinarily not reviewable on an
    interlocutory basis (City of Petaluma v. Superior Court (2016)
    
    248 Cal.App.4th 1023
    , 1031), writ review is appropriate “[w]here, as here, an
    order will effectively . . . infringe on privacy rights.” (Los Angeles Gay &
    Lesbian Center v. Superior Court (2011) 
    194 Cal.App.4th 288
    , 300
    (Los Angeles Gay & Lesbian Center).) In such an instance, “review on appeal
    16
    is deemed inadequate because reversal on appeal will not cure the disclosure
    of protected information.” (Ibid.) Accordingly, because petitioners lack an
    “adequate remedy at law” to vindicate the third-party privacy rights at stake
    in their petitions and those third parties “will suffer an irreparable injury”
    (ibid.) if a writ is not granted, we conclude that writ review is appropriate.
    Finally, although petitioners did not discuss Hill or present a developed
    state constitutional argument in the superior court, for the following reasons,
    we exercise our discretion to reach the merits of their state constitutional
    claim, notwithstanding any possible forfeiture. (See People v. Williams
    (1998) 
    17 Cal.4th 148
    , 161 [“An appellate court is generally not prohibited
    from reaching a question that has not been preserved for review by a party”].)
    To begin with, the privacy rights at stake are those of the petitioners’
    patients, and we are therefore disinclined to conclude that petitioners’ briefing
    in the superior court precludes our consideration of these rights. (See Boler
    v. Superior Court (1987) 
    201 Cal.App.3d 467
    , 472, fn. 1.) In Boler, the court
    considered whether the defendant had forfeited his right to object on privacy
    grounds to deposition questions pertaining to the defendant’s prior sexual
    history with certain nonparties. The Boler court rejected this argument,
    reasoning in part:
    “[T]he privacy protection extends to the unknown,
    unnamed female partners of Boler who have neither
    executed a waiver nor are even necessarily aware their
    privacy interests are endangered by the deposition
    question. Indeed, where third-party privacy interests are
    involved, the target of discovery has an affirmative duty to
    notify the third parties of the discovery request and give
    them an opportunity to appear and object. [Citations.] An
    inflexible waiver rule would defeat the exercise of this duty
    and infringe upon the constitutional privacy rights of
    citizens not participating in this lawsuit. [¶] Given the
    fundamentality of the sexual privacy issue and the
    17
    interests of nonparties not present to object and the fact
    that the trial court reached the merits, we decline to rule
    that Boler has waived his sexual privacy objections.” (Ibid.)
    In addition, although petitioners did not develop a state constitutional
    privacy argument in the superior court, in their oppositions to the discovery
    referee’s recommendations and reports, the County of Los Angeles specifically
    mentioned “the constitutional rights of third parties” and the County of
    Alameda reiterated its privacy objections to having to produce unredacted
    patient health information. In addition, in its briefing before the discovery
    referee, the County of Alameda argued that the Johnson & Johnson
    defendants had failed to demonstrate that the “privacy interests of [patients]
    are outweighed by what is, in essence, a fishing expedition.” Further,
    petitioners alerted the superior court to the third-party privacy interests at
    stake by extensively arguing that the requested discovery sought materials
    protected by federal privacy regulations governing substance abuse
    treatment records.
    Moreover, the Johnson & Johnson defendants do not present any
    forfeiture argument in this court,12 nor do they argue that there are disputed
    facts relevant to a Hill analysis. (Williams, 
    supra,
     3 Cal.5th at p. 554, fn. 7
    [“Because there are no disputed material facts, we may conduct a Hill
    analysis for the first time on appeal”].) Indeed, in their return, the Johnson
    & Johnson defendants argue that the superior court considered the state
    constitutional privacy interests of third parties, contending that the
    12     In their consolidated answer to petitioners’ petitions for review of our
    initial summary denials of their writ petitions in the Supreme Court, the
    Johnson & Johnson defendants did argue that petitioners “never raised Hill
    or constitutional privacy rights below.” (Boldface & some italics omitted.)
    18
    “Superior Court performed its balancing obligation under Hill.” Under these
    circumstances, we conclude that it is appropriate to consider petitioners’ state
    constitutional privacy claim on the merits.13
    B. Standard of review
    Ordinarily, “[w]e review the trial court's grant or denial of a motion to
    compel discovery for an abuse of discretion. [Citation.] . . . A circumspect
    approach to appellate review of discovery orders ensures an appropriate
    degree of trial court latitude in the exercise of that discretion.” (Williams,
    supra, 3 Cal.5th at p. 540.) However, the Williams court cautioned that such
    deference comes with a significant “caveat[ ].” (Ibid.)14 “ ‘ “[T]he scope of
    discretion always resides in the particular law being applied, i.e., in the ‘legal
    principles governing the subject of [the] action . . . .’ Action that transgresses
    the confines of the applicable principles of law is outside the scope of
    13     Notwithstanding our consideration of the merits of petitioners’ state
    constitutional privacy claim under Hill, we find petitioners’ argument that
    “the [superior] court erred in neglecting to apply the Hill test,” (first italics
    added) and petitioners’ chiding of the Johnson & Johnson defendants’
    “attempts to apply the Hill factors post hoc,” (second italics added) to be
    misleading because petitioners failed to cite Hill or present an argument
    based on the Hill framework in the superior court.
    14     The Williams court also referred to a second “caveat[ ]” namely “the
    prodiscovery policies of the statutory scheme.” (Williams, supra, 3 Cal.5th at
    p. 540.) Without disregarding the statutory “preference for discovery” (ibid.),
    we observe that the discovery at issue in this writ proceeding is sought from
    nonparty petitioners, while in Williams, the discovery was sought from the
    defendant. (See id. at p. 538.) As this court observed in Board of Registered
    Nursing, the Supreme Court has cautioned that “[t]he permissible scope of
    discovery in general is not as broad with respect to nonparties as it is with
    respect to parties.” (Catholic Mutual Relief Society v. Superior Court (2007)
    
    42 Cal.4th 358
    , 366, fn. 6 (Catholic Mutual Relief Society); see Board of
    Registered Nursing, supra, 59 Cal.App.5th at p. 1039, citing Catholic Mutual
    Relief Society, supra, at p. 366, fn. 6.)
    19
    discretion and we call such action an ‘abuse’ of discretion.” ’ [Citation.] An
    order that implicitly or explicitly rests on an erroneous reading of the law
    necessarily is an abuse of discretion. [Citation.]” (Ibid.)
    The Williams court also noted that the application of Hill to requested
    discovery constitutes one such principle of law that may be applied by a
    reviewing court “as a matter of law,” where there are no disputed material
    facts. (Williams, supra, 3 Cal.5th at p. 554, fn. 7.) Thus, because a
    determination of whether the superior court’s discovery order implicates
    constitutional privacy rights under Hill rests upon undisputed facts (see pt.
    III.A, ante), we review this question of constitutional law de novo. (See, e.g.,
    Alfaro v. Superior Court (2020) 
    58 Cal.App.5th 371
    , 384 [“Although in general
    discovery rulings are reviewed for abuse of discretion, where, as here, ‘ “ ‘the
    propriety of a discovery order turns on . . . a question of law,’ we ‘determine
    the issue de novo’ ” ’ ”]; City of Los Angeles v. Superior Court (2017)
    
    9 Cal.App.5th 272
    , 282 [when “ ‘the propriety of a discovery order turns on . .
    . a question of law,’ we ‘determine the issue de novo’ ”].)
    C. Governing law
    1. Relevant principles of the law governing discovery from nonparties
    In Board of Registered Nursing, supra, this court recently provided an
    overview of the law governing discovery from nonparties:
    “ ‘Although the scope of civil discovery is broad, it is not
    limitless.’ (Calcor[, supra,] 53 Cal.App.4th [at p.] 223 . . . .)
    In general, ‘any party may obtain discovery regarding any
    matter, not privileged, that is relevant to the subject
    matter involved in the pending action or to the
    determination of any motion made in that action, if the
    matter either is itself admissible in evidence or appears
    reasonably calculated to lead to the discovery of admissible
    evidence.’ (Code Civ. Proc., § 2017.010.) To meet this
    standard, a party seeking to compel production of records
    from a nonparty must articulate specific facts justifying the
    20
    discovery sought; it may not rely on mere generalities.
    (Calcor, at p. 224.) In assessing the party’s proffered
    justification, courts must keep in mind the more limited
    scope of discovery available from nonparties. (See Catholic
    Mutual Relief Society[, supra, at p. 366, fn. 6.])” (Board of
    Registered Nursing, supra, 59 Cal.App.5th at p. 1039.)
    “Even if information is otherwise discoverable, it may be protected by a
    constitutional . . . privilege . . . [including] . . . the right to privacy . . . .”
    (Board of Registered Nursing, supra, 59 Cal.App.5th at p. 1039; Williams,
    
    supra,
     3 Cal.5th at p. 554 [stating that a trial court’s order denying a request
    for discovery may be “affirmed on privacy grounds if . . . such concerns
    supported denial of discovery”]; see Weil & Brown, Cal. Practice Guide: Civil
    Procedure Before Trial (The Rutter Group 2020) ¶ 8:293 [“Even highly
    relevant, nonprivileged information may be shielded from discovery if its
    disclosure would impair a person’s ‘inalienable right of privacy’ provided by
    Calif. Const. Art. 1, § 1”].)
    2. The right to privacy under the California Constitution
    a. The state constitutional amendment adding a right of privacy
    “In November 1972, the voters of California specifically amended
    article I, section 1 of our state Constitution to include among the various
    ‘inalienable’ rights of ‘all people’ the right of ‘privacy.’ ” (White v. Davis
    (1975) 
    13 Cal.3d 757
    , 773.)15 Among the “principal ‘mischiefs’ ” that the
    constitutional amendment addressed was “the improper use of information
    properly obtained for a specific purpose, for example, the use of it for another
    purpose or the disclosure of it to some third party . . . .” (Id. at p. 775; see
    15    “All people are by nature free and independent and have inalienable
    rights. Among these are enjoying and defending life and liberty, acquiring,
    possessing, and protecting property, and pursuing and obtaining safety,
    happiness, and privacy.” (Cal. Const., art I, § 1, italics added.)
    21
    Board of Registered Nursing, supra, 59 Cal.App.5th at p. 1039 [“Protection of
    informational privacy is the provision’s central concern”]; see also Grafilo v.
    Wolfsohn (2019) 
    33 Cal.App.5th 1024
    , 1033–1034 (Grafilo) [“[t]he provision’s
    ‘central concern’ is the ‘[p]rotection of informational privacy’ [citation]; that
    is, the interest ‘in precluding the dissemination or misuse of sensitive and
    confidential information’ ”].)
    b. The Hill framework
    In Hill, the California Supreme Court “articulated a two-part inquiry
    for determining whether the right to privacy under article I, section 1 has
    been violated.” (Lewis, supra, 3 Cal.5th at p. 571, citing Hill, 
    supra,
     7 Cal.4th
    at p. 26.) “First, the complaining party must meet three ‘ “threshold
    elements” . . . utilized to screen out claims that do not involve a significant
    intrusion on a privacy interest protected by the state constitutional privacy
    provision.’ [Citation.] The party must demonstrate ‘(1) a legally protected
    privacy interest; (2) a reasonable expectation of privacy in the circumstances;
    and (3) conduct by defendant constituting a serious invasion of privacy.’
    [Citation.] This initial inquiry is necessary to ‘permit courts to weed out
    claims that involve so insignificant or de minimis an intrusion on a
    constitutionally protected privacy interest as not even to require an
    explanation or justification by the defendant.’ [Citation.]” (Lewis, supra, at
    p. 571.)
    Second, if a claimant satisfies the threshold inquiry, “ ‘[a] defendant
    may prevail in a state constitutional privacy case by negating any of the
    three elements just discussed or by pleading and proving, as an affirmative
    defense, that the invasion of privacy is justified because it substantively
    22
    furthers one or more countervailing interests.’ [Citation.]” (Lewis, supra,
    3 Cal.5th at p. 572, citing Hill, 
    supra,
     7 Cal.4th at p. 40.)16
    As alluded to in our discussion of the applicable standard of review (see
    pt. III.B, ante), “The Hill test, conceived in the context of a pleaded cause of
    action for invasion of privacy, has been applied more broadly, including to
    circumstances where litigation requires a court to reconcile asserted privacy
    interests with competing claims for access to third party contact
    information.” (Williams, supra, 3 Cal.5th at p. 552.) A reviewing court “may
    conduct a Hill analysis for the first time,” in a case in which “there are no
    disputed material facts.” (Id. at p. 554, fn. 7.)
    D. Application
    We apply the Hill framework in considering whether the superior
    court’s order implicates state constitutional privacy rights (Cal. Const., art. I,
    § 1) of the patients whose medical information would be affected by the order.
    1. Petitioners have established the threshold elements of a Hill claim
    We first consider whether petitioners have carried their threshold
    burden of demonstrating that the superior court’s discovery order threatens a
    serious invasion of privacy.
    16     If a defendant makes such a showing, “ ‘[t]he [claimant], in turn, may
    rebut a defendant’s assertion of countervailing interests by showing there are
    feasible and effective alternatives to defendant’s conduct which have a lesser
    impact on privacy interests.’ [Citation.]” (Lewis, supra, 3 Cal.5th at p. 572,
    citing Hill, 
    supra,
     7 Cal.4th at p. 40.) We need not discuss the rebuttal prong
    further in this case, because, for the reasons discussed in part III.D, post, we
    conclude that the Johnson & Johnson defendants have not identified
    countervailing interests that outweigh the serious invasion of privacy
    interests at issue in this case.
    23
    a. Legally protected privacy interest
    In considering the first of the three factors comprising the threshold
    inquiry, it is clear that patients “have a bona fide interest in the
    confidentiality of their [medical] information.” (Williams, supra, 3 Cal.5th at
    p. 554.) “[P]atients have a right to privacy with respect to information
    contained in . . . medical records. Indeed, that right is well[-]settled.”
    (Grafilo, supra, 33 Cal.App.5th at p. 1034, citing numerous cases].) It is a
    right that is protected by case law as well as state and federal statutes and
    regulations. (See, e.g., Civ. Code, § 56 et seq. [“This part may be cited as the
    Confidentiality of Medical Information Act”]; 42 U.S.C. § 1320d et seq. Health
    Insurance Portability and Accountability Act (HIPAA) of 1996 [providing that
    health care providers generally may not disclose medical information without
    a patient’s authorization or court order]; Citizens for Health v. Leavitt,
    
    428 F.3d 167
    , 172 (3d Cir. 2005) [describing administrative privacy
    regulations promulgated pursuant to HIPAA].)
    “Medical patients’ privacy interest, our Supreme Court has observed,
    derives from their expectation of privacy in their physician’s files, which ‘may
    include descriptions of symptoms, family history, diagnoses, test results, and
    other intimate details concerning treatment.’ ” (Grafilo, supra,
    33 Cal.App.5th at p. 1034, citing Lewis, supra, 3 Cal.5th at p. 575.) “ ‘[T]he
    matters disclosed to the physician arise in most sensitive areas often difficult
    to reveal even to the doctor. Their unauthorized disclosure can provoke more
    than just simple humiliation in a fragile personality. . . . The individual’s
    right to privacy encompasses not only the state of his mind, but also his
    viscera, detailed complaints of physical ills, and their emotional overtones.
    The state of a person’s gastro-intestinal tract is as much entitled to privacy
    from unauthorized public or bureaucratic snooping as is that person’s bank
    24
    account, the contents of his library or his membership in the NAACP.’ ”
    (Grafilo, supra, at p. 1034, quoting Board of Medical Quality Assurance v.
    Gherardini (1979) 
    93 Cal.App.3d 669
    , 679.) As one court explained in
    discussing the “examination of medical records within the purview of the
    privacy amendment”:
    “The information that may be recorded in a doctor’s files is
    broad[-]ranging. The chronology of ailments and treatment
    is potentially sensitive. Patients may disclose highly
    personal details of lifestyle and information concerning
    sources of stress and anxiety. These are matters of great
    sensitivity going to the core of the concerns for the privacy
    of information about an individual. The intrusion upon
    personal privacy when a state agency examines such
    records is substantial.” (Wood v. Superior Court (1985)
    
    166 Cal.App.3d 1138
    , 1147 (Wood).)
    Medical records pertaining to substance abuse treatment, such as those
    at issue in this case, are an example of such “highly personal details” (Wood,
    supra, 166 Cal.App.3d at p. 1147) that are entitled to even greater privacy
    protections under both state and federal law. (See Health & Saf.,
    § 11845.5;17 42 U.S.C. § 290dd-2; 
    42 C.F.R. § 2.1
     et seq.) One court
    17    Health & Safety Code section 11845.5 provides:
    “(a) The identity and records of the identity, diagnosis,
    prognosis, or treatment of any patient, which identity and
    records are maintained in connection with the performance
    of any alcohol and other drug abuse treatment or
    prevention effort or function conducted, regulated, or
    directly or indirectly assisted by the department shall,
    except as provided in subdivision (c), be confidential and be
    disclosed only for the purposes and under the
    circumstances expressly authorized under subdivision (b).
    “(b) The content of any records referred to in subdivision (a)
    may be disclosed in accordance with the prior written
    consent of the client with respect to whom the record is
    25
    maintained, but only to the extent, under the
    circumstances, and for the purposes as clearly stated in the
    release of information signed by the client.
    “(c) Whether or not the client, with respect to whom any
    given record referred to in subdivision (a) is maintained,
    gives his or her written consent, the content of the record
    may be disclosed as follows:
    “(1) In communications between qualified professional
    persons employed by the treatment or prevention program
    in the provision of service.
    “(2) To qualified medical persons not employed by the
    treatment program to the extent necessary to meet a bona
    fide medical emergency.
    “(3) To qualified personnel for the purpose of conducting
    scientific research, management audits, financial and
    compliance audits, or program evaluation, but the
    personnel may not identify, directly or indirectly, any
    individual client in any report of the research, audit, or
    evaluation, or otherwise disclose patient identities in any
    manner. For purposes of this paragraph, the term
    ‘qualified personnel’ means persons whose training and
    experience are appropriate to the nature and level of work
    in which they are engaged, and who, when working as part
    of an organization, are performing that work with adequate
    administrative safeguards against unauthorized
    disclosures.
    “(4) If the recipient of services is a minor, ward, or
    conservatee, and his or her parent, guardian, or
    conservator designates, in writing, persons to whom his or
    her identity in records or information may be disclosed,
    except that nothing in this section shall be construed to
    compel a physician and surgeon, psychologist, social
    worker, nurse, attorney, or other professional person to
    reveal information that has been given to him or her in
    confidence by members of the client’s family.
    “(5) If authorized by a court of competent jurisdiction
    granted after application showing probable cause therefor,
    26
    summarized federal law pertaining to substance abuse treatment records as
    follows:
    “ ‘Federal law restricts the disclosure of information
    obtained “in connection with the performance of any
    program or activity relating to substance abuse education,
    prevention, training, treatment, rehabilitation or research”
    conducted by the United States or with federal money.’
    [Citations.] The purpose of such restrictions is ‘to protect
    “the patient, the physician-patient relationship, and the
    treatment programs.” ’ [Citations.] ‘It is not only the
    privacy rights of individual patients that are at stake here,
    but also the continued effectiveness and viability of
    important substance abuse treatment programs.’
    [Citations]; see also Whyte v. Connecticut Mut. Life Ins.
    Co., 
    818 F.2d 1005
    , 1010 (1st Cir. 1987) (‘[A]bsolute
    confidentiality is an indispensable prerequisite to
    successful [substance abuse] research . . . [and]
    treatment.’). ‘Without guarantees of confidentiality, many
    individuals with [substance abuse] problems would be
    reluctant to participate fully in [substance abuse]
    programs.’ [Citations.]” (United States ex rel. Gelfand v.
    Special Care Hosp. Mgmt. Corp. (E.D.N.Y., June 10, 2010,
    No. CV 02-6079 (LDW) (ETB) 2010 U.S.Dist. Lexis 57456,
    *8–*9.)
    With respect to the subset of records that may be said to constitute
    “prescription records,”18 patients “retain a reasonable expectation of privacy”
    in such records. (Lewis, supra, 3 Cal.5th at p. 575.) While we acknowledge
    that patients’ privacy interest in prescription records is “less robust than the
    as provided in subdivision (c) of Section 1524 of the Penal
    Code.”
    18    Such records include the data on “dispensed medications, along with
    pharmacy and prescriber identifiers,” referred to in the County of Los
    Angeles’s writ petition, and the “pharmacy records,” referred to in the County
    of Alameda’s writ petition. (See generally pts. I, II.B, ante.)
    27
    privacy interest associated with medical records” (ibid.; see also ibid.
    [“medical records contain far more sensitive information than do prescription
    records”]), patients nevertheless maintain a significant privacy interest in
    such records, particularly those for opioids, given the stigma associated with
    substance abuse disorders.
    b. Reasonable expectation of privacy
    We also think it clear that patients have “a reasonable expectation of
    privacy under the [particular] circumstances.” (Hill, 
    supra,
     7 Cal.4th at
    p. 50.) To begin with, patients could reasonably rely on the statutory and
    case law described in part III.D.1.a, ante, in expecting that their medical
    information would not be used to facilitate the construction of a database for
    litigation purposes.19
    Further, the patients whose records are being sought have not taken
    any litigation position that could possibly constitute a waiver of their privacy
    rights. (See Britt v. Superior Court (1978) 
    20 Cal.3d 844
    , 864 [“while
    [plaintiffs] may not withhold information which relates to any physical or
    mental condition which they have put in issue by bringing this lawsuit, they
    are entitled to retain the confidentiality of all unrelated medical . . .
    treatment they may have undergone in the past” (fn. omitted)].) Nor have
    such patients performed some other act that might indicate a willingness to
    have their records disclosed. (Compare with Pioneer Electronics (USA), Inc.
    v. Superior Court (2007) (Pioneer Electronics (USA), Inc.) 
    40 Cal.4th 360
    , 363,
    372 [in consumer class action against the seller of allegedly defective
    products in which plaintiff sought personal identifying information of
    19    With respect to the substance abuse treatment records at issue in this
    case, patients could have additionally reasonably relied on federally
    mandated notices stating that, “federal law and regulations protect the
    confidentiality of substance use disorder patient records.” (
    42 C.F.R. § 2.22
    .)
    28
    customers who had filed complaints with seller, concluding that complainants
    had a reduced expectation of privacy because “complainants might
    reasonably expect, and even hope, that their names and addresses would be
    given to any such class action plaintiff”].)
    In particular, the patients whose records were ordered disclosed are not
    seeking to have their interests furthered by facilitating the payment of
    insurance payments to their providers. Thus, we are unpersuaded by the
    Johnson & Johnson defendants’ argument that such patients’ privacy rights
    would not be invaded by the ordered production because the Confidentiality
    of Medical Information Act permits patients’ medical information to be
    “disclosed to a person or entity that provides billing, claims management,
    medical data processing, or other administrative services for providers of
    health care or health care service plans . . . .” (Civ. Code, § 56.10(c)(3).)
    Nor can it be said that the patients’ reasonable expectation of privacy
    was reduced because the Johnson & Johnson defendants are seeking to use
    the requested discovery to further patients’ interests generally. (Compare
    with Williams, 
    supra,
     3 Cal.5th at p. 554 [in considering whether plaintiff
    employee was entitled to disclosure of contact information of defendant
    employer’s other employees, stating “we doubt . . . fellow employees would
    expect that information to be withheld from a plaintiff seeking to prove labor
    law violations committed against them and to recover civil penalties on their
    behalf,” citing numerous cases].)
    Finally, we are not aware of, and the Johnson & Johnson defendants
    have not cited, any historical practice, social norm, cultural practice or
    physical setting that would reduce such patients’ expectations of privacy in
    the present context. (See County of Los Angeles v. Los Angeles County
    Employee Relations Com. (2013) 
    56 Cal.4th 905
    , 927 (County of Los Angeles)
    29
    [“ ‘customs, practices, and physical settings surrounding particular activities
    may create or inhibit reasonable expectations of privacy’ ”]; compare with
    Lewis, supra, 3 Cal.5th at pp. 568–569 [noting Court of Appeal’s conclusion
    that release of CURES prescription data to Medical Board for investigative
    purposes was supported by the fact that “ ‘well-known and long-established
    regulatory history significantly diminishes any reasonable expectation of
    privacy against the release of controlled substances prescription records to
    state, local, or federal agencies for purposes of criminal, civil, or disciplinary
    investigations’ ”].)
    c. Serious invasion of privacy
    In determining whether petitioners have established “ ‘a serious
    invasion of privacy’ ” (Lewis, supra, 3 Cal.5th at p. 571), we must ask whether
    the ordered disclosure is “ ‘sufficiently serious in [its] nature, scope, and
    actual or potential impact to constitute an egregious breach of the social
    norms underlying the privacy right.’ ” (County of Los Angeles, supra,
    56 Cal.4th at p. 929, quoting Hill, 
    supra,
     7 Cal.4th at p. 37; see also County of
    Los Angeles, supra, at p. 929 [“The disclosure contemplated in this case was
    more than trivial. It rose to the level of a “ ‘serious’ ” invasion of privacy
    under Hill”].)20
    As discussed in part I, ante, as with the CURES prescription record
    data at issue in Board of Registered Nursing, the court’s order directed
    petitioners to provide the records on a personally identified basis to Rawlings
    so that Rawlings could deidentify the data and make it cross-referenceable
    against other deidentified data in the case. In Board of Registered Nursing,
    20    The County of Los Angeles court considered whether the County, as an
    employer, was required to provide a union with the home addresses and
    telephone numbers of all represented employees, including those who had not
    joined the union. (County of Los Angeles, supra, 56 Cal.4th at p. 912.)
    30
    this court stated that such disclosure “implicate[s] the privacy rights of the
    patients.” (Board of Registered Nursing, supra, 59 Cal.App.5th at p. 1045.)
    For the reasons that follow, we reach a similar conclusion with respect to the
    prescription records and substance abuse treatment records at issue in these
    writ proceedings.
    In considering the first of the Hill factors—the nature of the
    disclosure—as discussed above, the order pertains, in part, to medical
    records, “which may contain ‘matters of great sensitivity going to the core of
    the concerns for the privacy of information about an individual.’ ” (Grafilo v.
    Soorani (2019) 
    41 Cal.App.5th 497
    , 507.) Further, the nature of the medical
    records at issue in this case—treatment records for a stigmatized condition—
    only heightens the need for “robust protection.” (Ibid. [“The privacy interest
    in psychiatric records is particularly strong and, in some respects, entitled to
    more robust protection than other types of medical records”]; cf. Los Angeles
    Gay & Lesbian Center, supra, 194 Cal.App.4th at p. 308 [“unnamed plaintiffs
    have a reasonable expectation in the privacy of their medical records at the
    Center given the extremely sensitive nature of the information contained in
    them (sexually transmitted disease, possible HIV status, and sexual
    orientation)”]; compare with Pioneer Electronics (USA), Inc., supra,
    40 Cal.4th at p. 372 [“the proposed disclosure was not ‘particularly sensitive,’
    as it involved disclosing neither one’s personal medical history [n]or current
    medical condition”].) Moreover, patients were not notified of the ordered
    disclosure, and while petitioners have asserted the rights of such patients, no
    provision was made for a representative or multiple representatives of the
    31
    patients21 to participate in the discovery proceedings in the superior court.
    (See Valley Bank of Nevada v. Superior Court (1975) 
    15 Cal.3d 652
    , 657 [“The
    protection of [nonparty’s privacy right] should not be left entirely to the
    election of third persons who may have their own personal reasons for
    permitting or resisting disclosure of confidential information received from
    others”].) Further, it is also almost certain that many such patients would
    have strongly objected to the superior court’s disclosure order and would have
    desired to participate in the proceedings to protect against disclosure. (Cf.
    Sander v. Superior Court (2018) 
    26 Cal.App.5th 651
    , 655–657 (Sander) [in
    case involving whether State Bar was required to disclose “individually
    unidentifiable records,” (id. at p. 655, italics added) pertaining to bar
    applicants’ “race or ethnicity, law school, transfer status, year of law school
    graduation, law school and undergraduate GPA, LSAT scores, and
    performance on the bar examination,” (ibid.) “more than a dozen individuals,”
    and “two nonprofit professional associations of African American lawyers,”
    intervened on the side of the State Bar, in order “ ‘to protect privacy and
    reputational interests that are at the heart of the litigation between
    Petitioners and the State Bar,’ ” (id. at pp. 656–657)].)
    In sum, the nature of the disclosure—the production of patients’ opioid
    prescription treatment history and/or substance abuse treatment records,
    without notice to the patients—is consistent with a serious invasion of
    privacy interests.
    The scope of the disclosure ordered is also extremely broad, whether
    considered as applied to an individual patient or with respect to the number
    21    It is not difficult to imagine that there may be many different privacy
    interests that patients might wish to assert, given the number of patient
    records implicated by the superior court’s order.
    32
    of records implicated by the order. As to individual patients, the documents
    to be produced include “encounter data” containing “diagnoses, procedures,
    and other clinical information.” (See pt. I, ante.) As to the number of patient
    records implicated by the order, the superior court ordered petitioners to
    disclose all of the relevant patient records. (Compare with Snibbe v. Superior
    Court (2014) 
    224 Cal.App.4th 184
    , 188–189 (Snibbe) [real party sought to
    “discover all postoperative orders signed by petitioner between June 2010
    and June 2011 and by [petitioner’s assistant] between June 2009 and June
    2011,” but trial court “limited the scope of discovery to 160 postoperative
    orders including provisions for the administration of opioids”].) As a result,
    the number of patient records implicated by the court’s order is staggering.
    For example, the County of Los Angeles states in their petition that the
    records include “over 1.7 million associated encounters.” (Italics altered.)
    The Johnson & Johnson defendants do not dispute this number or argue that
    the order does not require—like the production at issue in Board of
    Registered Nursing—a “vast production of medical information from the
    nonparties here.” (Board of Registered Nursing, supra, 59 Cal.App.5th at
    p. 1011.) Thus, the scope of the disclosure at issue also supports the
    conclusion that the superior court’s order threatens a serious invasion of
    privacy interests.
    With respect to the “actual or potential impact,” (Hill, 
    supra,
     7 Cal.4th
    at p. 37, italics added) of the ordered production on privacy rights, we
    acknowledge that the trial court’s discovery order does not contemplate
    public disclosure of the records, or even identified disclosure to the Johnson &
    Johnson defendants. However, as the Supreme Court cautioned in a case
    involving the disclosure of prescription records, constitutional privacy
    concerns are not eliminated by the existence of protections against public
    33
    disclosure. (See Lewis, supra, 3 Cal.5th at p. 577 [“adequate protections
    against public disclosure do not obviate constitutional concerns as privacy
    interests are still implicated when the government accesses personal
    information without disseminating it”]; accord Board of Registered Nursing,
    supra, 59 Cal.App.5th at p. 1045 [“production of patient identifying
    information” to defendants’ vendor for deidentification “would . . . implicate
    the privacy rights of the patients” (citing Lewis)].)
    Indeed, under the circumstances of this case, for the following reasons,
    we conclude that the “actual or potential,” (Hill, 
    supra,
     7 Cal.4th at p. 37)
    impact on patient privacy rights is substantial. With respect to “actual”
    impact (ibid.), as petitioners remind us throughout their briefing, the
    superior court’s order requires the production of fully identified data to
    Rawlings. Thus, it cannot be disputed that the superior court’s order will
    have some actual impact on patients’ privacy rights in that the court ordered
    the production of their highly sensitive medical records and prescription data
    on a fully personally identified basis to an outside entity without the notice or
    consent of the patients.
    This fact distinguishes this case from Snibbe, supra, 
    224 Cal.App.4th 190
     and the case law on which Snibbe relied. In Snibbe, a patient died after
    receiving pain medication after surgery. (Id. at p. 187.) The deceased
    patient’s family members sued the petitioner surgeon for wrongful death.
    (Ibid.) The family members sought to discover postoperative orders involving
    other patients of the surgeon in an attempt to show that the surgeon had a
    practice of permitting his physician’s assistant “ ‘to rely on boilerplate drug
    orders for the administration of opioid pain medication.’ ” (Id. at p. 190.) The
    family members’ “requests allowed for the redaction of patients’ names and
    personal identifying information.” (Id. at p. 188.) After the surgeon objected
    34
    to the discovery on various grounds, the trial court granted the family
    members’ motion to compel in part, limiting, as mentioned above, the scope of
    discovery to 160 postoperative orders including provisions for the
    administration of opioids. (Id. at p. 189.) The surgeon petitioned for a writ of
    mandate to compel the trial court to vacate the discovery order for various
    reasons, including that the order violated his patients’ privacy rights. (Id. at
    p. 187.)
    The Snibbe court recognized the privacy rights at stake,
    notwithstanding the redacted nature of the records:
    “As it stands, the discovery order is too broad. Based on
    [the family members’] limited showing and the trial court’s
    finding of relevance only as to the opioid provisions of
    postoperative orders, allowing discovery of the orders in
    their entirety is unreasonable. It is all the more so because
    production of entire orders may raise legitimate concerns
    about the scope of intrusion into patient privacy
    rights . . . . ” (Snibbe, supra, 224 Cal.App.4th at p. 190.)
    However, the Snibbe court concluded that patients lacked a privacy
    interest in the “pain management provisions of otherwise redacted
    postoperative orders.” (Snibbe, supra, 224 Cal.App.4th at pp. 191; see id. at
    pp. 194–195.) The Snibbe court reasoned in part:
    “[P]atients’ privacy rights are not infringed if ‘neither
    disclosure of the patients’ identities nor disclosure of
    identifying medical information was requested.’ (Board of
    Medical Quality Assurance v. Hazel Hawkins Memorial
    Hospital (1982) 
    135 Cal.App.3d 561
    , 565 [request for
    unnamed charts of four patients did not infringe on
    patients’ privacy rights] [(Board of Medical Quality
    Assurance)]; see Kizer v. Sulnick (1988) 
    202 Cal.App.3d 431
    , 439 [(Kizer)] [privacy rights require no more than
    deletion of named medical records in health study or ‘if
    feasible, the deletion of information which individually
    identifies the participants’].) The limited production of
    35
    redacted postoperative orders cannot be said to infringe on
    patients’ privacy rights any more than the production of
    unnamed patients’ charts.” (Id. at pp. 194–195.)22
    The productions mandated by the courts in Snibbe and Board of
    Medical Quality Assurance pertained to records that did not contain
    personally identifying information. (See Snibbe, supra, 224 Cal.App.4th at
    p. 191; Board of Medical Quality Assurance, supra, 135 Cal.App.3d at p. 566.)
    In Kizer, supra, 202 Cal.App.3d at pp. 438–442, the court stated that “ ‘the
    record does not disclose whether the study[23] refers to individually
    22    Neither petitioners nor the Johnson & Johnson defendants cited
    Snibbe, Board of Medical Quality Assurance, or Kizer in their briefing.
    Further, while the Johnson & Johnson defendants assert in their
    supplemental letter brief that there is a line of “unbroken case law[,] holding
    that production of anonymized data for purposes of litigation does not violate
    the right to privacy,” (italics added) they do not cite to any such cases in their
    supplemental letter brief.
    In their return, the Johnson & Johnson defendants cite Padron v.
    Watchtower Bible & Tract Society of New York, Inc. (2017) 
    16 Cal.App.5th 1246
    , in which this court concluded that the third-party privacy rights at
    issue in that case were adequately protected by the production of documents
    in which “personal identifying information” was redacted (id. at p. 1270) and
    Poway Unified School Dist. v. Superior Court (1998) 
    62 Cal.App.4th 1496
     in
    which this court concluded that “privacy concerns” (id. at p. 1506) related to
    the disclosure of a minor’s tort claim form to a newspaper could be
    “address[ed],” by “redacting released materials.” (Ibid.) We disagree that
    these few fact-specific cases stand for the broad proposition that individuals
    never maintain a privacy interest in anonymized data under California law.
    (See fn. 25, post, and accompanying text.) However, as discussed in the text,
    even assuming that patients do not maintain a privacy interest in
    anonymized medical data, the discovery order at issue in these proceedings
    mandates the production of identified data to Rawlings, and thus is not
    governed by Snibbe or cases mandating the production of anonymized data.
    23    Kizer involved a government agency’s request to obtain a “medical
    study of the health effects on persons living near [a waste] facility,” which
    36
    identifiable medical records,’ ” but “[i]f such records are part of the study, the
    right to privacy would justify, at most, either the deletion of any named
    medical records upon the remainder of the health study being produced or, if
    feasible, the deletion of information which individually identifies the
    participants.”24 In contrast, in this case, the superior court’s order expressly
    mandates that petitioners “provide to Rawlings the identified data.” More
    generally, Snibbe, Board of Medical Quality Assurance, and Kizer do not
    address whether the production of vast amounts of personally identifiable
    medical data to a third-party vendor for deidentification purposes implicates
    the privacy rights of the patients whose records are to be produced.
    We assume, without deciding, that the Snibbe court and the cases on
    which it relied were correct in concluding that patients have no privacy
    interest in data that does not contain personally identifiable information.
    (See also Sander v. State Bar of California (2013) 
    58 Cal.4th 300
    , 311 [stating
    “If the applicant cannot be identified, disclosure of information does not
    had been commissioned by a law firm representing plaintiffs in a civil action
    against the facility. (Kizer, supra, 202 Cal.App.3d at p. 435.)
    24    Kizer, supra, 202 Cal.App.3d at p. 439 was decided before Hill and thus
    did not apply the Hill framework. However, to the extent that Kizer may be
    read as stating that the study should be produced with personally identifiable
    medical records to the extent that it was infeasible to delete such
    information, we understand the case as being premised on the conclusion
    that the invasion of privacy implicated by such disclosure would be
    outweighed by the need for a government agency to “investigate . . . possible
    health hazards posed by [a] waste facility.” (Kizer, supra, at p. 441.) The
    Kizer court did not state that the production of identified medical records
    would not constitute a serious invasion of privacy rights.
    37
    impair his or her privacy interests”].)25 We also observe that the Snibbe line
    of cases, as well as Sander v. State Bar of California, 
    supra,
     
    58 Cal.4th 300
    ,
    were all decided before Lewis, and thus, those courts did not consider the
    Lewis court’s observation that privacy concerns are not necessarily
    eliminated with “adequate protections against public disclosure.” (Lewis,
    supra, 3 Cal.5th at p. 577; see also id. at p. 581 (conc. opn. of Liu, J.) [“The
    electorate was concerned about more than public disclosure when it passed
    the privacy initiative in 1972, which amended the Constitution. The voters
    were concerned that their privacy was violated whenever their personal
    information was used or accessed without reason”].)
    Irrespective of whether patients maintain privacy rights in their
    deidentified data, the superior court’s order mandates the production of
    “identified data” to Rawlings. (Italics added.) As to that data, the patients
    whose records are at issue clearly maintain privacy rights. (See pt. III.D.1,
    ante.) Moreover, petitioners’ briefing identifies at least three “potential
    impact[s]” (Hill, 
    supra,
     7 Cal.4th at p. 37) related to such rights that are of
    25    Whether an individual may have a privacy interest in information
    pertaining to that individual even where that data is not linked to the
    individual is an important legal question on which commentators have
    expressed diverse views, given the many contexts in which the issue arises.
    (Compare, e.g., Dunkel, Medical Privacy Rights in Anonymous Data:
    Discussion of Rights in the United Kingdom and the United States in Light of
    the Source Informatics Cases (2001) 23 Loyola L.A. Internat. & Comparative
    L.Rev. 41, 41 [“a patient’s right to privacy is violated when personal medical
    information is revealed to an unauthorized third party . . . this should hold
    true even if such information is rendered anonymous by the removal of all
    data relating to the patient’s identity” (fn. omitted)] with Charkow, The
    Control over the De-Identification of Data (2003) 
    21 Cardozo Arts & Ent. L.J. 195
    , 197 [“the informational privacy interest for a data subject should extend
    only to the use and sharing of personally identifiable information with
    unauthorized persons” (fn. omitted)].)
    38
    significance. First, there is the potential for a data breach, whether
    inadvertent or malicious, that might reveal identified patient data.26 Even
    assuming that this risk is small, given the extremely sensitive nature of the
    data at issue in this case, it is a risk that must be considered in determining
    whether petitioners have demonstrated a “potential impact” on privacy
    rights. (Ibid.)
    Second, petitioners argue that “mass disclosure to an out-of-state data
    miner would surely discourage meaningful treatment and impair trust
    between [p]etitioners and their current, former, and future patients.” We
    agree that there is, at a minimum, a potential that some persons might be
    discouraged from seeking or continuing with treatment if they were to
    become aware of the discovery order in this case, given the highly sensitive
    nature of the data.27
    Finally, and as emphasized by petitioners in reply,28 there maintains
    the potential of “re-identification,” or the possibility that someone could “ ‘use
    reasonable effort to match the person’s identity to details in the released
    dataset sufficient to know enough information about the person to identify
    him or her as a specific person.’ ” (Sander, supra, 26 Cal.App.5th at p. 658
    26    The County of Los Angeles argued in its writ petition, “And if the
    database that Defendants create is ordered to be produced in other cases,
    unforeseen breaches are not out of the question.”
    27    That potential was lessened by the protections fashioned by the
    superior court to attempt to prevent public disclosure of identifiable patient
    data.
    28    The County of Los Angeles did reference this issue in its writ petition,
    arguing, “One potential misuse of the database that Defendants seek to
    create is the real possibility that it will include enough data points to allow
    re-identification of the patients that Rawlings has purported to anonymize.”
    39
    [quoting a data privacy expert].) While the superior court’s discovery order
    mandates that Rawlings “de-identify” the data, the possibility that
    deidentified data may be reidentified when such data is made cross-
    referenceable with other data sets is well documented. (See, e.g., id. at p. 659
    [summarizing expert testimony to the effect that “[d]ata analytic companies
    that deal in data compilations and derivations to link disparate datasets are
    also becoming increasingly able to re-identify data historically regarded as
    anonymous”]; Brasher, Addressing the Failure of Anonymization: Guidance
    from the European Union’s General Data Protection Regulation (2018) 2018
    Colum. Bus. L.Rev. 209, 211 [“In practice . . . anonymization fails to
    permanently obstruct the identities of data subjects due to the potential for
    deanonymization—the linking of anonymized data to ‘auxiliary’ information
    to re-identify data subjects”]; Ohm, Broken Promises of Privacy: Responding
    to the Surprising Failure of Anonymization (2010) 57 UCLA L.Rev. 1701,
    1742 [stating that “we must abandon the pervasively held idea that we can
    protect privacy by simply removing personally identifiable information,” as a
    “discredited approach”].)
    As one commentator noted in discussing the “well-documented failures
    of anonymization”:
    “Historically, the way to share private information without
    betraying privacy was through anonymization, stripping
    away all identifiers that could potentially uniquely identify
    an individual or group of individuals. Anonymization,
    however, proved to be anything but a ‘silver bullet.’ ”
    (Bellovin et. al., Privacy and Synthetic Datasets (2019)
    22 Stan. Tech. L.Rev. 3–4 (Bellovin).)
    Bellovin argues that various high-profile reidentification incidents
    suggest that it is often possible with “even novice computer aptitude to ‘join’
    40
    auxiliary information with a series of ‘perturbed’[29] data points and unveil
    the very data that anonymization was designed to protect.” (Bellovin, supra,
    at 4.)
    Commentators have suggested various “[r]isk [f]actors,” to consider in
    assessing the risk of reidentification, including the “[v]olume of [d]ata,”
    because “large data sets have a high degree of unicity, which makes it easier
    to launch reidentification attacks.” (Rubinstein & Hartzog, Anonymization
    and Risk (2016) 
    91 Wash. L. Rev. 703
    , 741.) The Johnson & Johnson
    defendants both acknowledge that Rawlings has “previously anonymized over
    a dozen other databases containing tens of millions of records from
    government agencies, private insurers, and the People in this case,” and seek
    to make petitioners’ own massive datasets cross-referenceable with these
    “multiple datasets.” Another risk factor for reidentification is the
    “[s]ensitivity of the [d]ata,” because “[s]ome information, like health . . .
    information, is more sensitive and thus more likely to be targeted by
    attackers,” (ibid.). As discussed throughout this opinion, the disclosure
    ordered in this case involves extremely sensitive medical and substance
    abuse treatment information.
    Finally, and critically, while the discovery order directs Rawlings to
    “de-identify” the data, it contains no protocols or requirements as to how such
    deidentification must be carried out. (Compare with Sander, supra,
    26 Cal.App.5th at p. 658 [noting that “[a] primary issue [at trial] was whether
    the four different protocols proposed by Petitioners to de-identify or
    ‘anonymize’ the data were sufficient to prevent matching a record in the
    29    “ ‘Perturbed’ here refers to the traditional, remove-name-and-zip-code
    styled sanitization techniques which often fail to exclude information which
    may be linked together to reidentify individuals.” (Id. at p. 4, fn. 9.)
    41
    supposedly anonymous data to either an individual or a small group of
    individuals”]; see also id. at pp. 659–663 [describing four different complex
    deidentification protocols and noting “[p]rotocols 2 and 4 employ variations of
    a concept known as ‘k-anonymity,’ ” in which “ ‘[t]he proper size of k (i.e. how
    much anonymity to provide) is a policy question depending on the sensitivity
    of the data and how ambiguous an identification is considered
    permissible’ ”].) Given the massive size of the ordered production, the
    multiple datasets, and the high sensitivity of the materials to be produced,
    the risks associated with an order to provide identified data to a third-party
    vendor with vague directions to “de-identify” such data, without any
    specification as to how such deidentification must occur, presents a clear
    potential threat to patient privacy.
    d. Petitioners met their threshold burden to establish a serious
    invasion of privacy interests
    In sum, given the nature, scope and the actual and potential impact on
    patient privacy, we conclude that petitioners have carried their threshold
    burden of demonstrating that the superior court’s discovery order threatens a
    serious invasion of privacy.
    2. The Johnson & Johnson defendants have not identified interests in
    favor of disclosure that outweigh the serious invasion of privacy that
    such disclosure would entail
    We next must consider whether the Johnson & Johnson defendants
    have identified interests in favor of disclosure that outweigh the serious
    invasion of privacy described in part III.D.1, ante. (See Williams, 
    supra,
    3 Cal.5th at p. 557 [describing the shifting burdens in applying the Hill
    framework]; Tom v. City and County of San Francisco (2004) 
    120 Cal.App.4th 674
    , 686 [“Because we conclude that respondents carried their burden of
    demonstrating a serious invasion of their reasonable privacy interests, the
    42
    burden shifted to the City to show ‘that the invasion of privacy is justified
    because it substantively furthers one or more countervailing interests’ ”].) In
    conducting such inquiry, we may consider “the interest of the requesting
    party, fairness to litigants in conducting the litigation, and the consequences
    of granting or restricting access to the information.” (Los Angeles Gay &
    Lesbian Center, supra, 194 Cal.App.4th at p. 307, citing Hill, 
    supra,
     7 Cal.4th
    at p. 37.)
    In considering the interests of the requesting party, we observe that the
    Board of Registered Nursing court noted that defendants contended that the
    CURES prescription data sought in that case was “relevant and
    discoverable,” because it would demonstrate “whether defendants’ drugs were
    associated with opioid abuse and overdoses,” and “whether patients were
    engaged in illicit activities or whether they obtained prescriptions from
    unauthorized prescribers.” (Board of Registered Nursing, supra,
    59 Cal.App.5th at pp. 1045–1046.) The Board of Registered Nursing court
    concluded that such interests were insufficient to justify the discovery of the
    CURES prescription records —even when considering the broad scope of
    discovery allowed from nonparties generally. (Id. at p. 1046, citing Calcor,
    supra, 53 Cal.App.4th at p. 224.)
    In this case, the Johnson & Johnson defendants seek to obtain opioid
    prescription data similar to the CURES data at issue in Board of Registered
    Nursing as well as substance abuse treatment records that threaten an even
    more substantial invasion of privacy rights (see Lewis, supra, 3 Cal.5th at
    p. 575, see also ibid. [“medical records contain far more sensitive information
    than do prescription records”]).30 And, like the defendants in Board of
    30   In their supplemental letter brief concerning Board of Registered
    Nursing, the Johnson & Johnson defendants do not argue that the
    43
    Registered Nursing, the Johnson & Johnson defendants argue that such data
    is necessary to determine “any ‘causal chain’ (or lack thereof) between
    Defendants’ conduct and any alleged “adverse consequences” as alleged by
    the People.” More specifically, as in Board of Registered Nursing, the
    Johnson & Johnson defendants maintain that the discovery is relevant to
    their contention “that any increase in opioid misuse, abuse, and overdose was
    a function of illegal prescribing and dispensing, widespread criminal
    diversion, and illicit drug trafficking.” Indeed, in the section of their return
    arguing that the superior court’s order comports with Hill, the only legal
    argument as to the relevance of the petitioners’ prescription and substance
    treatment data that the Johnson & Johnson defendants advance is the
    superior court’s relevance finding as to the discoverability of the state
    agency’s CURES data that this court reversed in Board of Registered
    Nursing.31
    Given that the Board of Registered Nursing court concluded that such
    interests were insufficient to justify disclosure under the broad Calcor
    discovery standard (Board of Registered Nursing, supra, 
    59 Cal.App.5th 1011
    ), we think it necessarily follows that such interests are not sufficient to
    justify disclosure in light of the serious potential invasion of privacy rights
    that exists in this case. This conclusion is strengthened by the Johnson &
    Johnson defendants’ failure to provide any discussion of the elements of
    prescription data differs from the CURES data at issue in Board of Registered
    Nursing, nor do they dispute that the discovery of substance abuse treatment
    records poses even greater privacy concerns.
    31     While the Johnson & Johnson defendants provide additional details as
    to these arguments in their supplemental letter brief, the underlying theory
    of discoverability, which the Board of Registered Nursing court rejected,
    remains the same.
    44
    plaintiffs’ causes of action or any case law bearing on such causes of action to
    attempt to demonstrate a theory of discoverability of the sensitive medical
    information at issue in these writ proceedings. Simply put, the Johnson &
    Johnson defendants fail to provide any “cogent legal argument” (Board of
    Registered Nursing, supra, 59 Cal.App.5th at p. 1041) as to how the discovery
    that they seek would be admissible or lead to the discovery of admissible
    evidence.
    This omission is particularly striking given that, in their reply,
    petitioners noted that the Johnson & Johnson defendants failed to provide
    any argument as to how the requested discovery “could be used to defend
    against causes of action that do not require a link between an individual
    harm and their particular product,” (italics omitted) and the Board of
    Registered Nursing court rejected the superior court’s finding of relevance on
    which the Johnson & Johnson defendants relied in their return.32 Yet, as
    with their return, the Johnson & Johnson defendants’ supplemental brief
    32    Instead, and straining credulity, the Johnson & Johnson defendants
    argue in their supplemental brief that the Board of Registered Nursing
    opinion has “no bearing” on our consideration of the writ petitions in this
    case, because, according to the Johnson & Johnson defendants, “the decision
    in Board of Registered Nursing turned chiefly on relevance and burden
    concerns that are not at issue in this case . . . .”
    “[R]elevance and burden concerns,” are clearly factors that not only
    may, but must be considered in determining whether a defendant has
    demonstrated that “the interest of the requesting party, fairness to litigants
    in conducing the litigation, and the consequences of granting or restricting
    access to the information” outweigh the privacy interests at stake in a case.
    (Los Angeles Gay & Lesbian Center, supra, 194 Cal.App.4th at p. 307.)
    Indeed, the Johnson & Johnson defendants argued in their return that they
    had carried their Hill burden by quoting the superior court’s determination
    that the discovery of CURES data was “relevant” in the proceedings that led
    to Board of Registered Nursing.
    45
    concerning Board of Registered Nursing fails to provide any discussion of the
    causes of action against which they are defending, a fact that supports the
    conclusion that the Johnson & Johnson defendants have failed to identify
    countervailing interests supporting the discovery order that outweigh the
    privacy interests at stake.33 In short, much like the general references to
    “ ‘measur[ing] trends and test[ing] causal relationships’ ” (Board of Registered
    Nursing, supra, 59 Cal.App.5th at p. 1046) that the Board of Registered
    Nursing court concluded was insufficient to justify the discovery at issue in
    that case, we conclude that the Johnson & Johnson defendants’ vague
    arguments that the data sought from petitioners goes “to the heart of the
    People’s causation theories,” and “apportionment in the event the Superior
    Court finds liability,” are “insufficient to justify such a vast production of
    medical information from the nonparties” (ibid.), particularly in light of the
    serious competing privacy interests at stake.
    The Johnson & Johnson defendants also have not made any persuasive
    argument that fairness to the litigants in conducing the litigation outweighs
    the privacy interests at stake. (Los Angeles Gay & Lesbian Center, supra,
    194 Cal.App.4th at p. 307.) To begin with, the Johnson & Johnson
    defendants do not argue that they bear the burden of proof with respect to
    either causation or damages, the two general areas for which the Johnson &
    33    In their supplemental brief, the Johnson & Johnson defendants argue
    that “[i]f this Court is inclined to consider relevance or burden arguments
    raised for the first time in Petitioners’ Reply, [the Johnson & Johnson
    defendants] request leave to expand the record to include additional evidence
    supporting these newly raised theories, which they would have done in
    connection with their Return had the relevance arguments been raised at any
    time below or in the Petitions.” We do not consider “relevance or burden
    arguments” outside the context of petitioners’ Hill argument, which was
    clearly and distinctly raised in their writ petitions. Accordingly, we decline
    the Johnson & Johnson defendants’ request to “expand the record.”
    46
    Johnson defendants have argued that the requested discovery is relevant.
    Further, the Johnson & Johnson defendants do not make any argument that
    plaintiffs have sought to discover the prescription records and substance
    abuse treatment records at issue in these writ proceedings. Thus, the
    Johnson & Johnson defendants have not shown that they are being deprived
    of any discovery on which plaintiffs may rely in proving their case, nor have
    they demonstrated that any other fairness concerns mandate disclosure.
    The Johnson & Johnson defendants also have not demonstrated that
    the consequences of granting or restricting access to the information support
    disclosure. (Los Angeles Gay & Lesbian Center, supra, 194 Cal.App.4th at
    p. 307.) To begin with, while the Johnson & Johnson defendants vaguely
    refer to the need to cross-reference “multiple datasets,” they provide but one
    example of such cross-referencing in their return.34 (Italics added.) Given
    the highly sensitive nature of the data requested, a far more detailed showing
    is required as to the precise nature of the datasets to which the discovery in
    this case would be linked and exactly how such data would be cross-
    referenced.
    Relatedly, the Johnson & Johnson defendants do not discuss in any
    detail the other discovery that has been produced in this case in attempting
    to explain their need for the specific discovery at issue in these writ
    proceedings. The Board of Registered Nursing court noted the lack of any
    such showing in that case:
    “[Defendants fail to] persuasively explain why such a large
    amount of personal and private data, on millions of
    Californians, is necessary in light of the extensive
    34    The one example provided is the Johnson & Johnson defendants’
    statement that “[p]etitioners’ claims data can be cross-referenced with
    already provided statewide mortality data to illustrate whether, and the
    extent to which, any harms befell County-specific and California patients.”
    47
    information already available to them. For example,
    defendants admit they have ‘insurance claims data and
    hospital claims data’ from the plaintiff jurisdictions and
    other private entities, as well as comprehensive mortality
    data from the California Department of Health. The
    department already releases data on opioid-related deaths,
    emergency room visits, hospitalizations, and county-level
    prescriptions. The [Department of Justice] releases
    aggregate statistics from the CURES database across
    numerous dimensions.” (Board of Registered Nursing,
    supra, 59 Cal.App.5th at p. 1046.)
    Similarly, in these writ proceedings, the Johnson & Johnson
    defendants acknowledge having access to multiple datasets in preparing their
    defense and fail to demonstrate why the discovery they seek from petitioners
    is critical in defending against plaintiffs’ claims.
    3. After applying the Hill framework, we conclude that the superior
    court erred in granting the Johnson & Johnson defendants’ motions
    to compel
    Petitioners have established a legally protected privacy interest, an
    objectively reasonable expectation of privacy in the given circumstances, and
    a threatened intrusion that is serious. The Johnson & Johnson defendants
    have not established countervailing interests that outweigh this serious
    potential invasion of privacy rights. Accordingly, we conclude that the
    superior court erred in granting the Johnson & Johnson defendants’ motions
    to compel.
    IV.
    DISPOSITION
    The Johnson & Johnson defendants’ demurrer to the petitions is
    overruled. The petitions are granted. Let a peremptory writ of mandate
    issue directing the superior court to vacate its order compelling production of
    documents from petitioners County of Los Angeles and County of Alameda
    48
    and enter a new order denying the Johnson & Johnson defendants’ motions
    to compel. Petitioners shall recover their costs in this original proceeding.
    (Cal. Rules of Court, rule 8.493(a)(2).)
    AARON, J.
    WE CONCUR:
    BENKE, Acting P. J.
    IRION, J.
    49