People v. Tseng ( 2018 )


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  • Filed 12/14/18
    CERTIFIED FOR PARTIAL PUBLICATION*
    IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
    SECOND APPELLATE DISTRICT
    DIVISION ONE
    THE PEOPLE,                              B270877
    Plaintiff and Respondent,        (Los Angeles County
    Super. Ct. No. BA394495)
    v.
    HSIU YING LISA TSENG,
    Defendant and Appellant.
    APPEAL from a judgment of the Superior Court of
    Los Angeles County, George G. Lomeli, Judge. Affirmed.
    Verna Wefald, under appointment by the Court of Appeal,
    for Defendant and Appellant.
    Xavier Becerra, Attorney General, Gerald A. Engler, Chief
    Assistant Attorney General, Lance E. Winters, Assistant Attorney
    General, Victoria B. Wilson, and David Glassman, Deputy
    Attorneys General, for Plaintiff and Respondent.
    Pursuant to California Rules of Court, rules 8.1100 and
    *
    8.1110, this opinion is certified for publication with the exception
    of the Discussion post, parts II-VII.
    Defendant and appellant Hsiu Ying Lisa Tseng, a physician,
    appeals from the judgment entered upon her convictions of three
    counts of second degree murder, 19 counts of unlawfully prescribing
    controlled substances, and one count of obtaining a controlled
    substance by fraud. She contends that substantial evidence did
    not support the murder convictions and that the trial court erred in
    (1) admitting evidence of six uncharged patient deaths; (2) failing
    to unseal and quash a search warrant of her financial records;
    (3) failing to grant a mistrial based on prosecutorial misconduct;
    (4) reopening closing argument; and (5) failing to apply Penal Code1
    section 654 to the murder conviction sentences. None of her
    arguments are meritorious. We therefore affirm.
    FACTUAL AND PROCEDURAL BACKGROUND2
    A.     Tseng’s Medical Clinic and Practice
    In approximately 2007, Tseng, a licensed physician practicing
    internal medicine and osteopathy, joined Advance Care AAA
    Medical Clinic (the clinic) in Rowland Heights, a general medical
    practice operated by her husband. When Tseng first joined the
    clinic, the patients came from the local Hispanic and Asian
    communities, the wait time for each patient was 15 to 30 minutes
    and 90 percent of the patients paid for treatment through their
    insurance.
    By 2008, the practice and the clientele of the clinic had
    changed. Most of Tseng’s patients were now white males in their
    1 All statutory references are to the California Penal Code
    unless otherwise indicated.
    2  This case involved a six-week trial on two dozen criminal
    charges relating to Tseng’s medical practice and prescriptions
    of controlled substances. We include only the facts and evidence
    relevant to the issues on appeal.
    2
    20’s and 30’s who came from outside Los Angeles County seeking
    pain and anxiety management medications. By 2010, the clinic had
    developed a reputation as a place where patients could easily obtain
    prescriptions for controlled substances, including opioids, sedatives,
    muscle relaxants, and drugs used to treat drug addiction. In
    addition, fees had doubled, and nearly all patients paid in cash.3
    The clinic’s income increased from $600 a day in cash to $2,000 to
    $3,000 per day.4
    According to one visitor, the clinic looked “like a parole
    office” with “drug dealing.” The wait time for Tseng’s patients
    also increased to about six hours with 20-30 patients inside the
    waiting room or outside the clinic at any one time. Some patients
    appeared to be under the influence of drugs or suffering from drug
    withdrawals, and one patient overdosed in the waiting room. When
    G.R., the clinic’s receptionist, expressed concern about the number
    of patients waiting and the level of anxiety and agitation they
    expressed in the waiting room, Tseng told her that they were
    “druggies” and could wait.
    B.    Tseng’s Treatment and Prescribing Methods
    Beginning in 2008
    Tseng spent about 10 to 15 minutes with new patients and
    five minutes with them on return visits. Often she would see two or
    three unrelated patients in the same examination room at the same
    3  Tseng also charged $5 to “split” a prescription. “Splitting”
    is a practice of writing a prescription on two different prescription
    forms so that a patient could fill the prescription on different dates
    or at different pharmacies.
    4 It appears that the clinic’s earnings grew during this time
    because of the increase in fees charged for services and in the
    number of patients treated on a daily basis.
    3
    time. Tseng would often undertake no (or only a cursory) medical
    examination of her patients; patients for whom she would prescribe
    pain medications often expressed nonspecific complaints about
    anxiety and pain from old injuries. Many times, she did not
    obtain an adequate medical history or prior medical records before
    prescribing medications. For example, she did not do drug testing
    or review the California’s Controlled Substance Utilization Review
    and Evaluation System (CURES) database5 to determine whether
    patients had current or prior prescriptions for controlled substances
    from other doctors. Tseng routinely wrote prescriptions for opioids
    (such as oxycodone, oxymorphone, fentanyl, and hydrocodone),6
    sedatives (such as promethazine and benzodiazepine),7 muscle
    relaxants (such as carisoprodol, which is sold under the brand name
    Soma®), and amphetamines, as well as controlled substances used
    to treat drug and opioid addictions (such as methadone and
    5   CURES collects prescription dispensation information
    for all controlled substance prescriptions written in the State of
    California for individual patients. By referring to the CURES
    database, a doctor may determine when and from whom a
    particular patient has obtained a prescription for a controlled
    substance. This can reveal whether the patient may be abusing
    controlled substances by obtaining prescriptions for the same drug
    from multiple doctors.
    6 Branded formulations of oxycodone are sold under the
    brand names OxyContin® or Roxicodone®; branded formulations
    of oxymorphone are sold under the brand names Opana® or
    Opana ER®; and branded formulations of the drug hydrocodone are
    sold under the brand names Norco®, Vicodin®, or Lortab®.
    7Tseng prescribed a benzodiazepine drug sold under the
    names alprazolam and Xanax®.
    4
    buprenorphine/naloxone).8 Tseng sometimes allowed patients to
    pick up prescriptions for other patients who were not at the clinic.
    The evidence presented at trial showed that on at least one
    occasion Tseng prescribed a patient’s relative, who had never been
    Tseng’s patient, a controlled substance. Tseng acknowledged that
    some patients, who presented symptoms suggesting opioid and drug
    addiction and withdrawal, were merely seeking drugs.
    C.    Investigations of Tseng’s Practice
    Beginning in 2008, pharmacists began to refuse to fill
    prescriptions written by Tseng because the prescriptions raised
    “red flags”; the patients’ profiles, conduct, and the combination
    of substances and quantities Tseng prescribed indicated no
    legitimate medical purpose for writing the prescriptions. When
    Tseng learned of this, she referred her patients to “mom and pop”
    pharmacies, which continued to fill her prescriptions. That same
    year, law enforcement investigators, including investigators from
    the coroner’s office, began calling Tseng to discuss the deaths of
    several of her patients and to apprise her that the patients had died
    of suspected drug overdoses shortly after obtaining prescriptions
    from her. Once she became aware of the deaths, she entered
    “alerts” in some of the patients’ records indicating that they had
    died from a possible drug overdose. She also altered9 patient
    8  The United States Drug Enforcement Agency (DEA) had
    not licensed Tseng to prescribe drugs to treat addiction.
    9  During this period, the clinic began using digital patient
    records that allowed Tseng to enter medical information, including
    “alerts” in a patient file to convey information to a receptionist
    about a patient. According to G.R., until authorities began
    investigating the clinic and requesting information about Tseng’s
    patients, many patient records were incomplete or blank. In
    fact, the digital copies of medical records obtained in 2010 by
    5
    records but continued her prescribing practices until she was
    arrested in 2012.
    In 2010, the DEA and California Department of Justice (DOJ)
    investigated Tseng for diversion of drugs. DEA agents executed a
    search warrant at Tseng’s medical group. Agents seized computers
    and created digital copies of her computer files. In 2012, the
    Medical Board of California (the Medical Board) also executed
    a search warrant on Tseng’s medical group, seizing patient records.
    Evidence produced during the investigation revealed that from
    2007 through 2010, the clinic’s gross receipts were approximately
    $5,000,000.
    D.    Tseng’s Patients’ Overdose Deaths
    In July 2012, Tseng was arrested and charged with
    three counts of second degree murder (§ 187 (count 1, Vu Nguyen;
    count 2, Steven Ogle; and count 4, Joseph Rovero)), 20 counts of
    unlawfully prescribing controlled substances to patients (Health &
    Saf. Code, § 11153, subd. (a) (count 3 & counts 5-23)), and one count
    of obtaining a controlled substance by fraud (Health & Saf. Code,
    § 11173, subd. (a) (count 24)).
    At trial, the prosecution presented evidence that from
    September 2007 to December 2009, nine of Tseng’s patients—
    ranging from 21 to 34 years of age—died shortly after filling
    the prescriptions Tseng wrote them for controlled substances.
    law enforcement from Tseng’s office computers contained few
    exam notes for patients who had died from drug overdoses;
    however, the same records seized by authorities in 2012 for the
    same office visits revealed extensive exam notes, indicating that
    Tseng had altered the records while she was under investigation.
    6
    1.    Murder charges
    a.   Death of Vu Nguyen (count 1—second
    degree murder) in 2009
    In early February 2009, Tseng prescribed 28-year-old
    Nguyen the sedative Xanax®, and the opioids Norco® and
    Opana®.10 Nguyen died several days later of a drug overdose.
    Nguyen’s family did not believe he suffered from any medical
    condition that required him to take painkillers. The Orange
    County Coroner’s Division conducted Nguyen’s autopsy and
    determined the cause of his death was the combined effects of
    Opana® and Xanax®, although he had methadone in his system
    as well.11
    On March 9, 2009, the coroner’s investigator contacted
    Tseng to discuss Nguyen’s death. Tseng told the investigator she
    started treating Nguyen on August 9, 2008, for back and neck
    pain. She prescribed the opioid Norco® and sedative Xanax®.12
    Two weeks later, Nguyen returned and said he had taken all of
    the medication because the pain was “too much.” Tseng wrote
    him a refill prescription. Although Tseng claimed she told Nguyen
    she would not write refill prescriptions for his medications “early”
    again, she failed to discuss with him the potential health risks of
    Norco® and Xanax®. Nguyen returned to Tseng at the beginning of
    10  On February 7, 2009, Tseng prescribed Nguyen: Xanax®
    (2 mg, 90 tablets); Norco® (10 mg, 90 tablets); and Opana® (10 mg,
    90 tablets).
    11   Tseng never prescribed Nguyen methadone.
    12 The record does not contain evidence of the doses or
    number of pills of Norco® or Xanax® that Tseng initially prescribed
    Nguyen.
    7
    November 2008 and said the medications were not working. Tseng
    prescribed the opioid Opana®, which is three times stronger than
    Norco®, and wrote him a refill prescription for Xanax®. During
    that visit, Nguyen also told Tseng that he had Attention Deficit
    Disorder and reported he was having trouble concentrating. Tseng
    did not attempt to corroborate the diagnosis of Attention Deficit
    Disorder; nonetheless, Tseng prescribed him Adderall®.13 Nguyen
    returned on December 1, and Tseng prescribed Vicodin®,14 Opana®,
    and Xanax® for him. Nguyen returned on January 5, 2009, and
    reported that the Vicodin® was not strong enough. Tseng
    prescribed Nguyen a higher dose of the opioid Norco® (10 mg,
    90 tablets), and gave him refill prescriptions for the opioid Opana®
    (10 mg, 90 tablets) and the sedative Xanax® (2 mg, 90 tablets). A
    month later, at Nguyen’s last visit, Tseng wrote those refill
    prescriptions for the same dose and number of pills. Tseng told the
    coroner’s investigator that Nguyen was always seeking more
    medication and stronger doses.
    The prosecution also presented evidence that Tseng did not
    obtain information from Nguyen to corroborate his complaints of
    pain and anxiety or complete an adequate physical examination to
    determine whether a legitimate medical reason existed to prescribe
    the controlled substances. In addition, although Nguyen reported
    to Tseng that he was taking “high doses of opioids” prescribed by
    other doctors, Tseng did not contact Nguyen’s other doctors. Tseng
    did not obtain medical records relating to Nguyen’s prior treatment
    or a complete medical and mental health history of Nguyen.
    13  Adderall® is the brand name of an amphetamine drug
    commonly prescribed to treat the symptoms of Attention Deficit
    Disorder.
    14  The opioid Vicodin® is a hydrocodone opioid of the same
    degree of strength as the hydrocodone opioid Norco®.
    8
    Tseng’s medical records pertaining to Nguyen showed that
    Tseng had not provided a treatment plan for Nguyen, nor had
    she educated him about alternative treatments for his symptoms
    or the potential risks of the substances she prescribed. In addition,
    the prosecution presented evidence that Tseng had altered
    Nguyen’s patient records between 2010 and 2012 by filling in
    information in his records that she had left incomplete while she
    was treating Nguyen.
    The prosecution’s medical expert testified that Tseng’s
    treatment of Nguyen represented an extreme departure from the
    standard of medical care.
    b.    Death of Steven Ogle (count 2—second
    degree murder; count 3—unlawful
    prescription) in 2009
    Steven Ogle, who lived in Palm Springs, sought treatment
    from Tseng in early March 2009, complaining of pain caused by
    a car accident that had occurred several years before. According
    to Tseng’s patient records for Ogle, during his first visit to Tseng’s
    clinic on March 2, 2009, he told Tseng he was taking six to eight
    OxyContin® tablets (80 mg) per day,15 using heroin, and that he
    wanted to take methadone. Tseng did not ask who had prescribed
    Ogle the OxyContin®. Even though Tseng was not an addiction
    specialist licensed to prescribe and monitor the use of methadone,
    she wrote Ogle prescriptions for methadone (10 mg, 100 tablets)
    15  According to expert testimony presented at trial, an
    80 milligram dose of OxyContin® is an amount typically prescribed
    to a terminal cancer patient. There was no evidence Ogle was
    suffering from cancer.
    9
    and Xanax® (2 mg, 100 tablets).16 Ogle returned to the clinic two
    weeks later on March 17, 2009, having used all of the medication
    and suffering from symptoms of withdrawal. Tseng wrote refill
    prescriptions for Ogle. On April 7, again having used all the
    medications prescribed on March 17 and suffering from withdrawal
    symptoms, Ogle returned to the clinic for more prescriptions.
    Tseng again prescribed Xanax® (2 mg, 100 tablets) and methadone
    (10 mg, 100 tablets). Ogle died two days later. Investigators found
    three bottles of prescription medication near Ogle’s body. Tseng
    had written prescriptions for two of these only two days earlier:
    methadone, 100 tablets (7 remaining) and Xanax®, 100 tablets
    (15.5 remaining). The third bottle, containing OxyContin®, had
    been prescribed in January 2009 by another doctor. The coroner
    opined that Ogle died of “methadone intoxication.”
    In early May 2009, a coroner’s investigator called Tseng
    regarding Ogle. Tseng confirmed that Ogle’s first visit was in
    March 2009, about a month before his death. She said that
    Ogle reported he was abusing OxyContin® and wanted her help
    to stop, and therefore she prescribed methadone and Xanax®.
    Tseng said she saw Ogle again two weeks later and wrote him refill
    prescriptions. Tseng confirmed he returned in early April and she
    16  Ogle’s sister-in-law accompanied him on visits to the
    clinic. She testified it was her belief that at Ogle’s first visit on
    March 2, 2009, Tseng prescribed Ogle: OxyContin®, Xanax®,
    and the sedative promethazine. She also testified that at Ogle’s
    second visit in mid-March, she believed that Tseng wrote refill
    prescriptions and also prescribed methadone. Tseng’s patient
    records for Ogle do not indicate that she prescribed him OxyContin®
    or promethazine. Likewise, when Tseng spoke to the coroner’s
    investigator in May 2009, after Ogle’s death, Tseng did not
    mention prescribing Ogle OxyContin® or promethazine.
    10
    wrote Ogle refill prescriptions again. She claimed that she told
    Ogle not to take methadone with other opioids.
    The prosecution presented expert medical testimony that
    Tseng’s method of treatment of Ogle represented an extreme
    departure from the standard of care in various ways, including that
    Tseng was not a licensed addiction specialist and did not have the
    training to monitor Ogle’s use of methadone.
    c.    Death of Joseph Rovero (count 4—second
    degree murder; count 5—unlawful
    prescription) in 2009
    In 2009, Rovero was a 21-year-old student at Arizona State
    University, who traveled from Arizona seeking treatment at
    Tseng’s clinic. Tseng saw Rovero only once, on December 9, 2009,
    to treat his complaints of back pain, wrist pain, and anxiety.
    Rovero informed Tseng he had been using high doses—six pills
    (150 mg to 200 mg) of OxyContin® and Xanax® and the muscle
    relaxant Soma®—every day and requested the same prescriptions.
    Tseng prescribed him the opioid Roxicodone® (30 mg, 90 tablets),
    Soma® (350 mg, 90 tablets), and Xanax® (2 mg, 30 tablets).
    Nine days later, when Rovero died of a drug overdose, empty
    bottles of medications prescribed by Tseng were found near his
    body. The coroner in Arizona investigating Rovero’s death found
    the cause of death was combined drug toxicity, including alcohol,17
    prescription opioids, muscle relaxants (Soma®), and a sedative
    (Xanax®).
    When investigators questioned Tseng about Rovero’s death,
    she admitted treating Rovero and knowing that he had been using
    opioids, sedatives, and muscle relaxants prescribed by other
    17 The amount of alcohol in Rovero’s blood at the time of
    his death was a non-lethal amount.
    11
    doctors. She told investigators that she believed Rovero was
    taking an inappropriate amount of OxyContin®. Consequently,
    she prescribed Roxicodone® instead, as well as Xanax® and Soma®.
    Her stated goal was to wean Rovero from opioids. Tseng did not,
    however, verify the doses or the types of medications that Rovero
    claimed other doctors had previously prescribed him. Tseng
    reduced the doses of all three drugs Rovero reported taking by
    80 percent, which, according to the evidence presented at trial,
    guaranteed he would suffer from withdrawals. The prosecution’s
    expert explained that when an individual has been abusing pain
    medications by taking high doses of the medications—as Rovero
    was—any efforts to “wean” the person from those drugs require a
    gradual reduction in dosing; otherwise, the individual might
    experience symptoms of drug withdrawal that place the individual
    at risk of overdose or death. The prosecution also presented
    evidence that the prescriptions Tseng wrote for Rovero likely
    increased his potential for overdose and death because Tseng failed
    to verify the doses of the drugs he had been previously prescribed.
    2.    Uncharged deaths of Tseng’s patients
    During the trial, in addition to the deaths of Nguyen, Ogle,
    and Rovero, the prosecution presented evidence of the following
    six uncharged deaths of Tseng’s patients from prescription drug
    overdoses between late 2007 and 2009: Matthew Stavron, Ryan
    Latham, Nathan Keeney, Joshua Chambers, Joseph Gomez, and
    Michael Katnelson.
    Specifically, with respect to patient Stavron, who died in
    2007, Tseng prescribed to him, among other drugs, OxyContin®
    (80 mg). During the DEA’s investigation of Tseng’s practice, she
    told an undercover DEA agent that an 80 milligram prescription of
    OxyContin® is “super high.” She was also aware that OxyContin®
    12
    is primarily prescribed only to treat pain from broken bones or
    cancer, and that Stavron did not suffer pain from broken bones
    or cancer. Two days after Tseng wrote Stavron a prescription for
    OxyContin®, he died from an overdose of that medication. When
    the coroner’s investigator called Tseng to discuss Stavron’s death,
    she told the investigator that Stavron was drug-seeking.
    Tseng’s patients Latham and Keeney died in 2008. Tseng had
    prescribed Latham Norco® (10 mg, 150 tablets), in addition to other
    drugs. As Tseng told an undercover DEA agent, Norco® is addictive
    and “evil.” Two days after Tseng wrote Latham the prescription, he
    died from a Norco® overdose. During a call with the coroner’s
    investigator, Tseng described the number of Norco® pills Latham
    took per day and characterized him as a “drug-seeker.”
    Tseng prescribed Keeney OxyContin® (80 mg, 60 tablets).
    There was no indication that Keeney had broken bones or cancer.
    Tseng also prescribed to him methadone (10 mg, 100 tablets). Four
    days after filling the prescriptions from Tseng, Keeney died from a
    methadone and OxyContin® overdose. Tseng told the coroner’s
    investigator that Keeney had “somewhat drug-seeking behavior.”
    Tseng was aware of Stavron’s and Latham’s overdose deaths
    before she started treating murder victim Nguyen, and learned of
    Keeney’s death while she was treating Nguyen. In addition, by
    the time that murder victim Ogle died in April 2009, Tseng had also
    learned of Nguyen’s death.
    In 2009, Tseng’s patients Chambers, Gomez, and Katnelson18
    also succumbed to drug overdoses. Specifically, concerning
    Katnelson, Tseng prescribed him fentanyl (10 of the 75 mcg-
    18  Tseng was charged with issuing unlawful prescriptions
    with respect to Chambers (count 8), Gomez (count 10), and
    Katnelson (count 13).
    13
    per-hour patches). Fentanyl is an opioid 100 times more
    potent than morphine. Katnelson died the day after he filled
    the prescription from Tseng. Tseng told the coroner’s investigator
    that she did not know Katnelson well enough to know whether he
    was abusing the medication.
    Tseng prescribed Chambers, among other drugs, Norco®
    (10 mg, 100 tablets); Chambers died three days later. The coroner
    determined Chamber’s cause of death was a combination of drugs,
    including Norco®. Tseng told the coroner’s investigator that
    Chambers appeared to be drug-seeking because he finished his
    drugs early and because his insurance company apprised her that
    Chambers was seeking medication from other doctors. She also
    reported that she suspected Chambers was abusing alcohol.
    Tseng prescribed Gomez, among other drugs, the opioid
    Roxicodone® (30 mg, 90 tablets) and Xanax® (2 mg, 100 tablets);
    two days later, Gomez died. The coroner determined he died of
    a combined intoxication, including Roxicodone® and Xanax®.
    Tseng told the coroner’s investigator that Gomez attempted to get
    medication from other doctors.
    Tseng learned of the drug overdose deaths of Chambers,
    Gomez, Katnelson, and Ogle before she began treating murder
    victim Rovero in December 2009.
    Similar to the deaths of the patients in the charged murder
    counts—Nguyen, Ogle, and Rovero—the six uncharged patient
    deaths of Stavron, Latham, Keeney, Chambers, Gomez, and
    Katnelson all occurred within days after Tseng wrote them
    prescriptions for high doses of opioids, sedatives, or other drugs.
    These patients—Stavron, Latham, Keeney, Chambers, Gomez, and
    Katnelson—also fit the same patient profile as Nguyen, Ogle, and
    Rovero. They were in their 20’s or early 30’s, and Tseng knew they
    were drug-seeking and drug-abusing. Tseng treated some of
    14
    these patients only once while others returned several times; each
    time, Tseng prescribed high doses of controlled substances.
    Moreover, after the coroner’s investigators contacted Tseng to
    inform her when each patient had died from a drug overdose, Tseng
    entered an “alert” in the clinic’s computer records for some of those
    patients, indicating the patient had died from a possible drug
    overdose. A comparison of the patient records seized in 2010 and
    2012 also showed that Tseng had altered patient records, while she
    was under investigation, by completing records that had been
    previously left blank or incomplete.
    Even after Tseng learned of these deaths, she continued
    to prescribe high doses of controlled substances, including opioids,
    sedatives, and in some cases, methadone to other patients.
    A jury found Tseng guilty of three counts of second degree
    murder, 19 counts of unlawfully prescribing controlled substances,
    and one count of obtaining a controlled substance by fraud. The
    trial court sentenced her to 30 years to life in state prison. Tseng
    filed a timely notice of appeal.
    15
    DISCUSSION
    I.    Substantial Evidence Supports Tseng’s Second Degree
    Murder Convictions
    Tseng contends that substantial evidence does not support
    her convictions of second degree murder of Nguyen, Ogle, and
    Rovero because there was no evidence that she acted with implied
    malice, and, in the case of Nguyen and Rovero, no evidence that her
    conduct was the proximate cause of their deaths. She argues that
    although she acted with negligence sufficient to support convictions
    for involuntary manslaughter, there was no evidence that she
    acted with conscious disregard for her patients’ lives. Specifically,
    she asserts that because coroner and police investigators never
    informed her that she was responsible for the victims’ deaths or
    the deaths of other patients, her continued practice of prescribing
    high doses and large quantities of opioids and other controlled
    substances did not show the necessary reckless mindset to support
    a finding of implied malice.
    We review the evidence in the light most favorable to the
    verdicts, presuming the existence of every fact the trier could have
    reasonably deduced from the evidence. (People v. Johnson (1993)
    
    6 Cal.4th 1
    , 38, overruled on other grounds by People v. Rogers
    (2006) 
    39 Cal.4th 826
    .) We apply the same standard to our review
    of circumstantial evidence. (People v. Ceja (1993) 
    4 Cal.4th 1134
    , 1138.) As set forth below, we conclude that substantial
    evidence supports the jury’s verdict.
    A.    Evidence of Implied Malice
    Implied malice exists when an intentional act naturally
    dangerous to human life is committed “ ‘by a person who knows
    that his conduct endangers the life of another and who acts with
    conscious disregard for life.’ ” (People v. Lasko (2000) 
    23 Cal.4th 16
    101, 107, quoting Pen. Code, § 188.) “It is the ‘ “ ‘conscious
    disregard for human life’ ” ’ that sets implied malice apart from
    gross negligence.”19 (People v. Contreras (1994) 
    26 Cal.App.4th 944
    ,
    954.) “Implied malice is determined by examining the defendant’s
    subjective mental state to see if . . . she actually appreciated
    the risk of . . . her actions.” (People v. Superior Court (Costa)
    (2010) 
    183 Cal.App.4th 690
    , 697 (Costa); see People v. Olivas (1985)
    
    172 Cal.App.3d 984
    , 988 [“[T]he state of mind of a person who acts
    with conscious disregard for life is, ‘I know my conduct is dangerous
    to others, but I don’t care if someone is hurt or killed.’ ”].) “Implied
    malice may be proven by circumstantial evidence.” (Costa, supra,
    183 Cal.App.4th at p. 697; see People v. Nieto Benitez (1992)
    
    4 Cal.4th 91
    , 110 [“Even if the act results in a death that is
    accidental . . . the circumstances surrounding the act may evince
    implied malice.”].)
    The record discloses overwhelming evidence that
    Tseng’s treatment of Nguyen, Ogle, Rovero, and other patients
    was well below the standard of care in the practice of medicine
    and prescribing opioid medications. We recognize that, although
    probative of Tseng’s subjective appreciation of risk, a departure
    from the medical standard of care alone would not be sufficient to
    support an implied malice finding. (See People v. Klvana (1992)
    19 Second degree murder (based on implied malice) and
    involuntary manslaughter both involve a disregard for life. For
    murder, however, the disregard is judged by a subjective standard,
    whereas for involuntary manslaughter, the standard is an objective
    one. (People v. Watson (1981) 
    30 Cal.3d 290
    , 296–297.) Implied
    malice murder requires a defendant’s conscious disregard for life,
    meaning that the defendant subjectively appreciated the risk
    involved. (Ibid.) In contrast, involuntary manslaughter merely
    requires a showing that “a reasonable person would have been
    aware of the risk.” (Id. at p. 297.)
    17
    
    11 Cal.App.4th 1679
    , 1703-1705 [even though the evidence
    showed that doctor’s treatment of patients fell below the standard
    of care, his second degree implied malice murder convictions
    were affirmed not based on the evidence of the doctor’s negligence
    but, instead, because sufficient evidence demonstrated doctor’s
    actual awareness and conscious disregard of the life-threatening
    dangers of his treatment of patients].) As noted above, to sustain
    an implied malice murder conviction, there must be substantial
    evidence that Tseng subjectively appreciated the risk to her
    patients of her opioid prescription practices. Here, substantial
    evidence supports the jury’s finding that Tseng acted with a
    subjective appreciation of the risks involved in her medical
    treatment of Nguyen, Ogle, and Rovero.
    As a licensed physician, Tseng had expert knowledge of the
    life-threatening risk posed by her drug prescribing practices. She
    knew that the drugs she prescribed were dangerous and that the
    combination of the prescribed drugs, often with increasing doses,
    posed a significant risk of death. Tseng’s experience and medical
    training regarding opioids and other controlled substances
    endowed her with special knowledge of those dangers. During the
    investigation of her practice, Tseng admitted to undercover DEA
    agents that she understood that the drugs she was prescribing were
    addictive and typically would only be prescribed to treat pain from
    cancer and broken bones. She knew that she was prescribing those
    drugs in high doses and in dangerous combinations to patients who
    did not suffer from those conditions.
    Tseng also took other actions that showed her awareness of
    the danger of her prescribing practices. After larger pharmacies,
    such as CVS and Walgreens, contacted Tseng to raise questions
    about the lack of medical justification for her prescriptions, and
    ultimately refused to fill those prescriptions, Tseng sent her
    18
    patients to small “mom and pop” pharmacies which she knew would
    continue to fill her prescriptions. Moreover, although she knew
    some patients were also obtaining similar prescriptions from
    other doctors and were taking drugs in lethal combinations, Tseng
    did not contact those other doctors to determine which drugs other
    doctors had prescribed or in what doses and when; nor did she
    check the CURES database for that information. Rather, Tseng
    told patients—some of whom she knew were addicted to
    prescription pain medication—not to mix the drugs.
    There is substantial evidence of Tseng’s subjective
    awareness of the risk of death her prescribing practices posed
    to the three charged murder victims. Concerning Nguyen, the
    evidence showed that from his initial visit, Tseng knew that
    Nguyen was drug-seeking and that he was taking high doses of
    opioids prescribed by other doctors. Nonetheless, she failed to
    corroborate his complaints of pain and anxiety, contact his other
    doctors, or do the kind of physical examination required to
    determine whether a legitimate medical reason existed for
    prescribing the drugs he requested. Instead, Tseng prescribed to
    Nguyen opioids and sedatives, and when he returned two weeks
    later having used up all the medications, she simply wrote him
    refill prescriptions. According to Tseng, during the second visit,
    she told Nguyen that she would not write him a prescription for his
    medications “early” again. She failed, however, to discuss with him
    the severe health risks of those combined medications. After that,
    Nguyen returned almost every month until his death in February
    2009 seeking more medication in higher doses. Tseng wrote him
    refill prescriptions without further inquiry into the need for those
    refills, let alone in higher doses. A reasonable jury could infer from
    this evidence that Tseng was aware Nguyen was abusing the
    opioids and sedatives she had prescribed, and that by continuing
    19
    to prescribe the drugs in greater amounts and stronger doses, Tseng
    acted in conscious disregard for his life.
    In addition, even while Tseng was treating Nguyen, she
    learned of the deaths of other patients—Stavron, Latham, and
    Keeney—who had similar patient profiles. They, like Nguyen, were
    otherwise healthy, young men seeking prescriptions for controlled
    substances and willing to pay cash, who died of drug overdoses
    shortly after Tseng treated them. They also expressed vague
    complaints about pain and reported taking prescription opioids and
    sedatives. Tseng admitted she knew that many of these patients
    were drug-seeking and had presented with symptoms of drug
    addiction when she prescribed controlled substances to them.
    She told her receptionist that her patients were “druggies.” She,
    nonetheless, continued to prescribe high doses of opioids, sedatives,
    and muscles relaxants without performing adequate physical
    examinations of these patients and without corroborating their
    claims of pain and prior injuries. When these patients returned
    for subsequent visits and sought to refill the prescriptions, Tseng
    complied and sometimes wrote them prescriptions for stronger
    medications, again with no medical justification.
    Substantial evidence further supports that Tseng acted
    with implied malice when treating Ogle. At his first visit in
    March 2009, Ogle told Tseng that he was taking extremely high
    doses of OxyContin®—in amounts used to treat terminal cancer
    patients—and using heroin daily. Rather than investigate this
    report of Ogle’s drug use and prior treatment, Tseng prescribed him
    100 tablets each of Xanax® as well as methadone—a drug she knew
    she was not licensed or trained to prescribe. Ogle then returned
    twice in the next month having used all the medications Tseng
    had prescribed. During those visits, he informed Tseng that he had
    taken all the medications and wanted refill prescriptions, and
    20
    Tseng observed that Ogle was suffering from symptoms
    of withdrawal from drugs. Tseng did not, however, refer him
    to an addiction specialist. Instead, Tseng just wrote him refill
    prescriptions. From this evidence, and from the evidence that at
    the time Tseng was treating Ogle she was aware of the deaths of
    her patients Stavron, Latham, Keeney, and Nguyen, the jury could
    reasonably have found that Tseng acted with implied malice in
    treating Ogle.
    Substantial evidence also supports that Tseng acted with
    implied malice in treating Rovero. By the time she prescribed
    drugs for Rovero in December 2009, Tseng knew that eight of her
    patients (Stavron, Latham, Keeney, Chambers, Gomez, Katnelson,
    Nguyen, and Ogle) had died shortly after she had prescribed the
    types of drugs Rovero sought. Even armed with this knowledge,
    she continued to prescribe dangerous drugs in conscious disregard
    for Rovero’s life. Specifically, Rovero presented to Tseng as using
    extremely high doses of OxyContin®, Xanax®, and the muscle
    relaxant Soma® every day. Tseng did not, however, verify the
    doses or the types of medications that other doctors had previously
    prescribed to Rovero. Instead, Tseng substituted one brand of
    opioid (OxyContin®) for another (Roxicodone®) and prescribed
    Xanax® and Soma® in reduced doses, which, according to the
    evidence presented at trial, guaranteed Rovero would suffer from
    withdrawals and raised his potential for overdose and death.
    Our conclusion that substantial evidence supports a finding
    of implied malice with respect to each of the charged murders is
    not unprecedented. Our research has uncovered three cases—a
    federal case applying New York law and cases from California and
    Michigan—in which appellate courts addressed the sufficiency of
    evidence to support convictions of second degree murder or similar
    21
    charges, requiring evidence of recklessness or conscious disregard of
    life, stemming from a licensed physician’s treatment of a patient.
    Thus, in Einaugler v. Supreme Court of State of N.Y. (2d Cir.
    1997) 
    109 F.3d 836
    , a medical doctor was charged under the
    New York Penal Code with reckless endangerment and willful
    patient neglect in connection with the death of his patient. The
    prosecution presented evidence that he endangered his patient,
    who was in a nursing home, when he prescribed that she be fed
    through her dialysis catheter instead of her feeding tube, and then
    engaged in willful neglect by delaying the patient’s hospitalization,
    despite being told by other doctors that prompt treatment of the
    patient in a hospital was necessary. (Id. at pp. 840-841.) Although
    the doctor was not charged with second degree implied malice
    murder, the reckless endangerment charge against him required
    proof, as in Tseng’s case, of the doctor’s subjective awareness of the
    danger of his treatment. (Id. at p. 840.)
    After the state appellate court affirmed the doctor’s
    conviction, the doctor filed a petition for a writ of habeas corpus
    in the federal district court challenging the sufficiency of the
    evidence supporting his conviction. In denying the petition,
    the district court observed “[t]he reckless endangerment charge
    required proof that [the doctor] had recklessly engaged in conduct
    that created a substantial risk of serious physical injury. [New
    York] Penal Law [section] 120.20. For [the doctor’s] act to be
    reckless, he must have grossly deviated from a reasonable person’s
    standard of conduct and consciously disregarded a substantial and
    unjustifiable risk. See [New York] Penal Law [section] 15.05.”
    (Einaugler v. Supreme Court of State of N.Y., supra, 109 F.3d at p.
    840, italics omitted.) The district court concluded that the doctor’s
    convictions were supported by “sufficient” evidence. The court
    observed that the doctor knew of the dire health condition in which
    22
    his directions had placed his patient, had been directed
    to hospitalize his patient immediately once she showed signs of
    distress, and was aware of the serious health risk if she was not
    transferred promptly. He nevertheless waited 10 hours before
    transferring her to a hospital. (Ibid.)
    Our opinion in People v. Klvana, supra, 
    11 Cal.App.4th 1679
    also supports our conclusion that substantial evidence supports the
    jury’s finding of Tseng’s implied malice. In that case, we affirmed
    a medical doctor’s convictions of second degree murder for the
    deaths of nine infants. We concluded that a reasonable jury could
    have found implied malice to support the murder convictions
    based on the following evidence: The defendant repeatedly ignored
    obvious signs of medical distress in his patients during delivery;
    he advised parents not to take their children to the hospital
    despite clear indications of the need to do so; he induced vaginal
    births in inappropriate circumstances, after having been warned
    on numerous occasions that his treatment was dangerously
    substandard; and he continued to deliver babies despite the
    fact that his hospital privileges had been suspended because
    of substandard performance. (Id. at pp. 1704-1705.) Further
    paralleling the facts here, in Klvana, the prosecution presented
    evidence of an uncharged baby’s death resulting from the doctor’s
    treatment to support the doctor’s subjective knowledge of the grave
    risks of his treatment practices. (Ibid.)
    People v. Stiller (2000) 
    242 Mich.App. 38
    , 43 (Stiller), is
    also instructive. In Stiller, the Michigan appellate court affirmed
    the implied malice second degree murder conviction of a doctor
    who, for a four-month period, prescribed his patient high doses
    of hydrocodone unrelated to any rational medical treatment.
    (Id. at p. 43.) The patient then died from an overdose of drugs,
    including hydrocodone. (Id. at p 41.)
    23
    In challenging his murder conviction, the doctor argued that
    “there was no evidence that he actually instructed [his patient] to
    take a fatal dose of drugs.” (Stiller, supra, 242 Mich.App. at p. 47.)
    The Stiller court rejected the doctor’s argument: “[B]y prescribing
    huge quantities of medicine unrelated to any rational medical
    treatment and that had a possibility of interacting with other drugs
    he prescribed, defendant should have known that an overdose was
    likely to occur, and he therefore exhibited a wanton and willful
    disregard of the likelihood that the natural tendency of his behavior
    was to cause death or great bodily harm.” (Ibid.) The court also
    supported its decision with evidence that pharmacies had warned
    the doctor about his dangerous prescribing practices, the doctor
    had prescribed very high doses of powerful drugs, and he had
    knowledge that there was no legitimate medical reason for his drug
    prescription for the murder victim. (Id. at pp. 43-45.) The same is
    true here.
    Finally, even accepting Tseng’s claim that investigators did
    not expressly inform her that she was directly responsible for the
    deaths of Nguyen, Ogle, Rovero, or other patients, her conduct,
    after learning of these deaths, demonstrated she was aware of
    the lethal consequences of her prescribing practices. For example,
    Tseng placed “alerts” in the patient files indicating that they died
    of suspected drug overdoses. She also altered patient records after
    she learned she was under investigation. From this evidence
    and other circumstantial evidence in the record, a jury could have
    reasonably found Tseng knew the cause of Nguyen’s, Ogle’s, and
    Rovero’s deaths and of her role in their demise. In sum, substantial
    evidence supports the jury’s findings of implied malice.
    24
    B.    Evidence of Causation
    Tseng argues substantial evidence did not support the finding
    that she caused Nguyen’s and Rovero’s deaths.20 We disagree.
    Concerning Nguyen, the coroner determined that the
    cause of his death was the combined effects of Opana® and Xanax®,
    both prescribed by Tseng. Nguyen also had small amounts of
    methadone in his system when he died. Tseng argues that the
    presence of methadone was an “unforeseeable intervening” cause
    that demonstrates she did not cause his death. Tseng’s argument
    is unavailing because it asks us to reweigh the evidence, which
    we cannot do. (See People v. Protopappas (1988) 
    201 Cal.App.3d 152
    , 168 [appellate court will not reweigh the evidence and draw
    inferences which the jury rejected].)
    Although “an ‘independent’ intervening cause will absolve
    a defendant of criminal liability[,] . . . the intervening cause must
    be ‘unforeseeable . . . an extraordinary and abnormal occurrence,
    which rises to the level of an exonerating, superseding cause.’
    [Citation.] On the other hand, a ‘dependent’ intervening cause
    will not relieve the defendant of criminal liability. ‘A defendant
    may be criminally liable for a result directly caused by his act
    even if there is another contributing cause. If an intervening cause
    is . . . normal and reasonably foreseeable . . . the intervening act
    is “dependent” and not a superseding cause, and will not relieve
    defendant of liability.’ ” (People v. Funes (1994) 
    23 Cal.App.4th 1506
    , 1523.)
    Here, Tseng’s medical expert opined that the amount of
    methadone in Nguyen’s system was “pretty small” and alone
    would not have killed Nguyen. Tseng’s expert and the coroner’s
    20 On appeal, Tseng does not contest that there was
    substantial evidence of causation with respect to Ogle’s death.
    25
    investigator agreed that the medications Tseng prescribed to
    Nguyen were contributing causes of his death. Thus, even if
    methadone played a role in Nguyen’s death, the jury could have
    reasonably concluded that the presence of methadone was not
    an unforeseen, independent intervening event that would relieve
    Tseng of liability for Nguyen’s death.
    Likewise, there was substantial evidence that Tseng’s actions
    were a proximate cause of Rovero’s death. Tseng prescribed Rovero
    Roxicodone®, Soma®, and Xanax®. The coroner found that the cause
    of Rovero’s death was the combined drug toxicity from alcohol and
    the drugs Tseng had prescribed. Evidence was also presented that
    the amount of alcohol in his system could not have been lethal. The
    jury could have reasonably inferred from this evidence that alcohol
    was not an independent intervening cause of Rovero’s death.
    II.   The Court Did Not Err in Admitting Evidence of
    the Six Uncharged Deaths of Tseng’s Patients
    Tseng contends the trial court erred in permitting the
    prosecution to present evidence of the uncharged deaths of Stavron,
    Latham, Keeney, Chambers, Gomez, and Katnelson. She argues
    that the trial court should have excluded this evidence under
    Evidence Code section 1101, subdivision (a), because the six
    patient deaths were not relevant for any purpose authorized by
    Evidence Code section 1101, subdivision (b). Tseng further asserts
    that the trial court should have excluded the evidence under
    Evidence Code section 352 because the undue prejudice from this
    evidence substantially outweighed its probative value and its
    admission also violated her due process rights. We disagree.
    Under Evidence Code section 1101, subdivision (b), evidence
    that a defendant has committed a crime, civil wrong, or some
    other act is admissible to prove a material fact “such as motive,
    opportunity, intent, preparation, plan, knowledge, identity, [the]
    26
    absence of mistake or accident.” (Evid. Code, § 1101, subd. (b); see
    People v. Ewoldt (1994) 
    7 Cal.4th 380
    , 402-403.) The admissibility
    of prior acts evidence “turns largely on the question whether the
    uncharged acts are sufficiently similar to the charged offenses to
    support a reasonable inference of the material fact they are offered
    to prove.” (People v. Erving (1998) 
    63 Cal.App.4th 652
    , 659-660.)
    “The least degree of similarity (between the uncharged act and
    the charged offense) is required in order to prove intent.” (People v.
    Ewoldt, 
    supra,
     7 Cal.4th at p. 402.) “On appeal, the trial court’s
    determination of this issue, being essentially a determination of
    relevance, is reviewed for abuse of discretion.” (People v. Kipp
    (1998) 
    18 Cal.4th 349
    , 369.)
    The trial court did not abuse its discretion in admitting
    evidence of the six uncharged deaths to prove Tseng’s intent. This
    evidence was relevant to the issue of Tseng’s subjective awareness
    of the dangerous consequences of overprescribing opioids and
    other controlled substances to patients whom she knew to be
    “drug-seeking” or suffering the symptoms of addiction.
    The evidence showed that, over the course of a few years,
    Tseng was repeatedly made aware of the potentially lethal risks
    posed by her prescribing practices, yet she ignored those warnings.
    Prior to the charged deaths, Tseng had learned of the uncharged
    deaths of her patients—Stavron, Lathan, Keeney, Chambers,
    and Katnelson—from overdoses of the same or similar drugs she
    prescribed Nguyen, Ogle, and Rovero. Despite this knowledge,
    Tseng continued to prescribe Nguyen, Ogle, Rovero, and others
    these drugs in sometimes even higher doses without any medical
    justification for doing so. Her prescribing practices thus tended to
    show a conscious disregard for the lives of her patients, including
    the murder victims. Even if the investigators did not expressly
    inform Tseng that her treatment and prescription practices
    27
    caused the deaths of the uncharged patients, her knowledge of
    the uncharged patients’ deaths after she prescribed powerful
    drugs with no medical justification for those prescriptions
    was circumstantial evidence of her subjective knowledge of risk
    to support an implied malice mental state. In short, evidence of
    her knowledge of the uncharged murders helped the jury assess
    Tseng’s level of awareness of the risk in determining whether,
    at the time of the murders, she acted with conscious disregard for
    life. The evidence was therefore admissible under Evidence Code
    section 1101, subdivision (b).
    Further, the trial court did not abuse its discretion under
    Evidence Code section 352 in admitting the uncharged crimes.
    Evidence of the uncharged deaths was highly probative on the
    key issue in the case—whether Tseng harbored implied malice—
    and was not substantially outweighed by its prejudicial effect.
    (See Evid. Code, § 352 [“The court in its discretion may exclude
    evidence if its probative value is substantially outweighed by the
    probability that its admission will . . . create substantial danger
    of undue prejudice.”].)
    Finally, admission of uncharged crimes under Evidence Code
    sections 352 and 1101 did not violate Tseng’s constitutional rights
    to due process, a fair trial, and a reliable adjudication. (People v.
    Lewis (2009) 
    46 Cal.4th 1255
    , 1289 [“ ‘ “routine application of state
    evidentiary law does not implicate [a] defendant’s constitutional
    rights” ’ ”]; People v. Lindberg (2008) 
    45 Cal.4th 1
    , 26.)
    28
    III.   Tseng Has Not Demonstrated Prejudicial Error in
    the Trial Court’s Denial of Her Motion to Unseal
    the Affidavit in Support of the Warrant to Search
    Her Bank Accounts, or in Finding that the Warrant
    Was Supported by Probable Cause, Nor Has She
    Demonstrated any Miscarriage of Justice from
    Introduction at Trial of the Financial Information
    Obtained Through the Warrant
    Tseng argues that the trial court erred in failing to unseal
    the entire affidavit submitted in support of the warrant to search
    her financial records, and in failing to quash or traverse the
    warrant because it was not supported by probable cause. Tseng
    further asserts that these errors violated her constitutional rights.
    A.   Background
    When the forensic examiners imaged Tseng’s computers, they
    discovered that the vast majority of Tseng’s patients paid in cash
    and that Tseng deposited the cash into multiple accounts at more
    than a dozen banks. In addition, the clinic’s receptionist, G.R.,
    confirmed that Tseng required patients to pay for services in cash
    and that the clinic’s cash revenue and the number of patients had
    increased dramatically since 2007. Investigators suspected that
    Tseng’s motivation in issuing medical prescriptions was financial.
    They also suspected that Tseng might have engaged in other
    crimes, such as money laundering, although Tseng ultimately was
    never charged with any such crime.
    Based on this information, on April 16, 2013, Sergeant
    Thomas Greep, an investigator for the Los Angeles County District
    Attorney’s Office, prepared a search warrant for approximately
    13 banks, requesting account information from multiple accounts
    held by Tseng and her husband. Sergeant Greep’s affidavit
    supporting the search warrant was submitted under seal pursuant
    29
    to People v. Hobbs (1994) 
    7 Cal.4th 948
     (Hobbs), because, according
    to the affidavit, if the information in the affidavit and attachments
    were made public, they would have compromised the investigation.
    The search warrant was issued, and the financial records were
    seized.
    Thereafter, on April 29, 2013, Tseng filed motions to
    unseal the affidavit and to quash and traverse the search warrant.
    The trial court conducted an in camera, ex parte hearing under
    the procedures outlined in Hobbs. At the hearing, the trial court
    questioned Sergeant Greep about the basis of probable cause for
    the warrant and the representations he made in the affidavit. The
    court further examined him as to the justification for sealing the
    affidavit and the supporting documents. (Hobbs, supra, 7 Cal.4th
    at p. 976.)
    The trial court observed that although sealing the affidavit
    may have been initially justified to protect the confidentiality
    and integrity of the investigation, much of the information in the
    affidavit, including the identity of the clinic’s receptionist, G.R., had
    already been disclosed to the defense.21 The prosecutor agreed, but
    also stated that some of the information—including the identity of
    some of the banks and the account information subject to seizure—
    had not been disclosed to the defense. The prosecutor also asserted
    that the investigation was not complete because some banks were
    21  We have reviewed the sealed documents and the transcript
    of the above-described in camera hearing. We observe that in
    addition to G.R.’s identity, it appears that the identity of three of
    the banks identified in the affidavit were no longer confidential by
    the time of the hearing. An employee of one of the banks had tipped
    off Tseng to the existence of the subpoena in the warrant and the
    DEA had already learned of the identity of two other banks from its
    earlier seizure of Tseng’s and her medical corporation’s records.
    30
    still producing records. The prosecutor told the trial court that
    depending on what the investigation revealed, an asset forfeiture
    procedure might be brought and, therefore, he argued that the
    identity of the banks and accounts subject to the warrant should
    remain under seal to protect the integrity of the assets in the
    accounts. Investigators feared that if Tseng became aware of the
    identity of all of the accounts subject to search, she might remove
    her funds from those accounts.
    The trial court concurred that the information about
    the banks should remain under seal, but ordered unsealing
    the first seven pages of the affidavit that contained information
    already known to Tseng (except for part of the conclusion on
    the seventh page which remained sealed).22 The trial court also
    22  The trial court ordered disclosed the following information:
    The DEA and the Medical Board had investigated Tseng’s medical
    practice; the DEA warrant had revealed that Tseng and her
    husband had numerous bank accounts; Tseng and her husband
    purchased real property; G.R.’s statement that the clinic accepted
    cash; and Sergeant Greep’s belief that probable cause existed
    that Tseng had violated Health and Safety Code section 11153,
    subdivision (a) (prescriptions written for no legitimate medical
    purpose).
    The following information at the bottom of page seven of the
    affidavit remained sealed: Tseng and her husband had 51 bank
    accounts and had purchased multiple real properties; and given
    the number of transactions and accounts, Sergeant Greep believed
    that Tseng and her husband were laundering their money in
    violation of section 186.10.
    In September 2017, Tseng filed a motion in this court to
    unseal the warrant, the portions of the affidavit that remained
    sealed, and the transcript from the June 2013 in camera hearing
    in which the trial court held pursuant to Hobbs to consider
    Tseng’s motion to quash and traverse. In November 2017, this
    31
    denied the motion to quash, finding that the warrant was
    supported by probable cause, and denied the traverse, finding
    no basis to conclude that the warrant was based on falsities,
    misrepresentations, or omissions. After the trial court unsealed
    part of the affidavit, Tseng never renewed her motions or sought
    to suppress the evidence discovered pursuant to the warrant.
    Tseng argues on appeal that the trial court should have
    ordered the entire affidavit unsealed because there was no
    justification for sealing the search warrant and the entire
    supporting affidavit in the first place. She argues that under
    Hobbs, the only legal basis for sealing a warrant is to protect the
    identity of a confidential informant. Tseng elaborates that the only
    witness identified in the warrant, G.R., was not a confidential
    informant and was already known to Tseng. In addition, noting
    that she was never charged with money laundering, Tseng
    maintains that the sealed information did not disclose a basis of
    probable cause to issue a warrant.
    B.    Analysis
    Pursuant to Evidence Code sections 1040 (privilege to refuse
    to disclose official information acquired in confidence), 1041 (the
    privilege to refuse to disclose the identity of a confidential
    informant), and 1042, subdivision (b) (protecting confidential
    information and an informant’s identity in a warrant from
    disclosure) and Hobbs, supra, 7 Cal.4th at page 971, all or part
    of a search warrant may be sealed or redacted to protect official
    confidential information or the identity of a confidential informant.
    (Ibid.; People v. Galland (2008) 
    45 Cal.4th 354
    , 363-364 (Galland);
    court ordered the unsealing of the entire affidavit, but denied the
    request to unseal the warrant; in December 2017, we ordered that
    the transcript from the June 2013 Hobbs hearing be unsealed.
    32
    People v. Heslington (2011) 
    195 Cal.App.4th 947
    , 955-956
    (Heslington).) To preserve a defendant’s right to reasonable
    access to information that might form the basis for a challenge
    to the validity of a warrant, and to strike a fair balance between
    the privileges in Evidence Code sections 1040 and 1041, a trial
    court must follow certain procedures when a defendant moves
    to unseal, quash, or traverse a sealed warrant.23 (Hobbs, supra,
    7 Cal.4th at pp. 962, 971–975; Galland, 
    supra,
     45 Cal.4th at p. 364;
    Heslington, supra, 195 Cal.App.4th at pp. 955–958.)
    On appeal, we review Tseng’s claims de novo. (See Hobbs,
    
    supra,
     7 Cal.4th at pp. 975, 977.) We review Hobbs error under
    the state law harmless error standard. (See Heslington, supra,
    195 Cal.App.4th at pp. 960-961 [applying a state law standard of
    prejudice to a claim of error under Hobbs].)
    The trial court acknowledged that Tseng was aware of
    G.R.’s identity and thus protecting the identity of a confidential
    informant did not justify denying Tseng’s request to unseal the
    23  The trial court must first conduct an in camera hearing
    to determine whether there are sufficient grounds for maintaining
    the confidentiality of the informant’s identity or the information
    sought to remain sealed. (Galland, supra, 45 Cal.4th at p. 364;
    Hobbs, 
    supra,
     7 Cal.4th at p. 972; People v. Martinez (2005)
    
    132 Cal.App.4th 233
    , 240–241.) Once the affidavit is found to have
    been properly sealed, the court must determine whether there
    was “ ‘ “a fair probability” that contraband or evidence of a crime
    would be found in the place searched pursuant to the warrant’
    (if the defendant has moved to quash the warrant) or ‘whether
    the defendant’s general allegations of material misrepresentations
    or omissions are supported by the public and sealed portions of
    the search warrant affidavit . . .’ (if the defendant has moved to
    traverse the warrant).” (Galland, supra, 45 Cal.4th at p. 364;
    Hobbs, 
    supra,
     7 Cal.4th at pp. 974–975; Heslington, supra,
    195 Cal.App.4th at p. 957.)
    33
    entire affidavit. In addition, other information in the sealed
    affidavit was no longer confidential, i.e., the government’s
    awareness of at least three of the banks that were the subject of
    the search warrant. Moreover, presumably Tseng was aware of her
    bank account information, such as her bank account numbers.
    The prosecutor informed the trial court that the People
    were seeking to keep a portion of the affidavit sealed to shield
    that the People were exploring potential additional charges related
    to how Tseng used her bank accounts to hide the cash she received
    from her medical practice. The prosecutor sought to keep this
    information sealed to prevent Tseng from removing the funds from
    those accounts while the People were considering whether to bring
    any such additional charges against Tseng. Acknowledging the
    prosecutor’s concerns, the trial court ordered that those sections of
    the affidavit relating to the ongoing confidential investigation
    remain sealed.
    Tseng argues that the Hobbs sealing procedures apply only
    to protect the identity of confidential informants. We note that
    the Evidence Code states that an informant’s identity and other
    confidential official information may remain under sealed. (See
    Evid. Code, § 1042, subd. (b) [providing that when a search warrant
    is valid on its face, a public entity bringing a criminal proceeding
    may establish the search’s legality without revealing to the
    defendant any official information or an informant’s identity],
    italics added.) Similarly, in dicta, the Heslington court observed
    that “[b]y statutory privilege, public entities may refuse to disclose
    official information and an informant’s identity when disclosure
    is against the public interest.” (Heslington, supra, 195 Cal.App.4th
    at pp. 955-956, italics added.) Arguably, the fact of the People’s
    confidential investigation into potential money laundering
    and similar charges against Tseng could constitute such official
    34
    information. (See People v. Jackson (2003) 
    110 Cal.App.4th 280
    , 287 [holding that “[o]ngoing investigations fall under the
    privilege for official information,” and affirming the prosecution’s
    refusal to disclose information about an ongoing police investigation
    based on Evidence Code section 1040]; see also People v. Otte (1989)
    
    214 Cal.App.3d 1522
    , 1531, fn. 4 [observing that the definition of
    “official information” subject to the privilege includes “more sources
    of information and the different methods of its acquisition than that
    furnished by the informants”].)
    We need not, however, resolve this issue. Even assuming
    arguendo that the court erred in failing to unseal the entire
    affidavit, any such error was not prejudicial as to the Hobbs
    proceedings or the trial itself.
    First, Tseng suffered no prejudice from the court’s order
    sealing the information about the government’s investigation of
    the three banks (and Tseng’s accounts) because he had already
    learned the information from other sources.
    Second, as to the other information in the affidavit, upon our
    review of the sealed portions of the affidavit, we have concluded
    there was no reasonable probability that Tseng would have
    prevailed on her motion to quash or traverse had the entire
    affidavit been unsealed. Concerning the motion to traverse, the
    sealed portion of the affidavit contained no inconsistencies or
    insufficiencies indicating that the affiant included a false statement
    made “knowingly and intentionally, or with reckless disregard
    for the truth” that was “necessary to the finding of probable cause.”
    (Franks v. Delaware (1978) 
    438 U.S. 154
    , 155-156.) Thus, the
    sealed information would not have supported Tseng’s motion to
    traverse.
    With regard to the motion to quash, we also agree with the
    trial court’s finding that the affidavit detailed probable cause for
    35
    issuance of the warrant. Tseng’s claim to the contrary is based
    solely on the sealed portion of the affidavit. Aside from the fact
    that the sealed affidavit contained additional evidence of probable
    cause, the information in the first seven pages of the affidavit,
    which was unsealed and disclosed to Tseng the factual basis
    for the warrant—including that Tseng’s practice was under
    investigation for its prescribing practices by state and federal
    authorities, that Tseng had numerous bank accounts, and Tseng
    accepted cash payments for service—was sufficient by itself to
    make the requisite showing of probable cause. Tseng’s argument
    downplays this information and ignores the reasonable inferences
    of guilt of the violation of Health and Safety Code section 11153,
    subdivision (a) (prescriptions written for no legitimate medical
    purpose) that was being investigated.
    Finally, Tseng claims that the failure to unseal the entire
    affidavit violated her constitutional rights to due process and
    the effective assistance of counsel. Tseng’s motion to unseal the
    affidavit was a discovery motion. (See People v. Navarro (2006)
    
    138 Cal.App.4th 146
    , 169-170 [characterizing motions to disclose
    information in sealed affidavits supporting search warrants
    pursuant to Hobbs as “discovery” procedures].) “It is settled
    that an accused must demonstrate that prejudice resulted from a
    trial court’s error in denying discovery.” (People v. Memro (1985)
    
    38 Cal.3d 658
    , 684, overruled on other grounds by People v. Gaines
    (2009) 
    46 Cal.4th 172
    ; accord, People v. Clark (1992) 
    3 Cal.4th 41
    , 133, overruled on other grounds in People v. Pearson (2013)
    
    56 Cal.4th 393
    , 462.) Tseng has not done so. She does not explain
    how the part of the affidavit that remained sealed could have
    assisted her in challenging the warrant and she never moved to
    suppress the evidence obtained in the search even after the trial
    court unsealed portions of the affidavit and warrant.
    36
    Tseng has not shown she suffered a miscarriage of justice
    under the state law standard of prejudice. Evidence of Tseng’s
    finances may have suggested a possible motive for the crimes
    underlying her convictions. But motive was not an element of
    those crimes. Furthermore, even absent this financial evidence,
    there was overwhelming evidence of Tseng’s knowledge of risk
    and reckless indifference to her patients’ lives in her prescribing
    practices to support her convictions, as we have detailed above.
    Thus, viewed from any vantage point in the proceedings, any error
    in applying Hobbs was harmless.24
    IV.   Tseng Has Not Demonstrated that the Prosecution
    Committed Prejudicial Misconduct Warranting
    Reversal
    Tseng complains that the prosecution committed prejudicial
    misconduct on two separate occasions during the trial by eliciting,
    in violation of a court order, information about the deaths of
    two victims of the unlawful prescription charges. She contends that
    this prosecutorial misconduct denied her due process.
    A.    Background
    1.    Nicholas Mata
    During the trial, John Mata testified that his son was one
    of Tseng’s patients, Nicholas Mata, the victim in count 14, an
    unlawful prescription charge. The prosecutor asked John Mata
    24  Also unavailing is Tseng’s general attack on the
    constitutionality of the Hobbs procedure. Our Supreme Court has
    rejected such an attack. (Hobbs, supra, 7 Cal.4th at pp. 971-975
    [authorizing procedures the trial court followed here and rejecting
    that those procedures violate due process].) We are bound by
    Hobbs. (Auto Equity Sales, Inc. v. Superior Court (1962) 
    57 Cal.2d 450
    , 455.)
    37
    the date of his son’s death; he responded that his son died on
    May 14, 2010. Tseng’s counsel objected, reminding the trial
    court that under a prior order, the prosecution was prohibited
    from eliciting evidence of Nicholas Mata’s death because the
    death had occurred after the last charged death. The prosecution
    conceded the error. The trial court informed counsel that it could
    instruct the jury to disregard the evidence of the death, but was
    concerned that any instruction might highlight the death. The
    trial court asked the prosecution to remind the witness not to
    mention his son’s death. Thereafter, at the conclusion of the direct
    examination, Tseng’s counsel requested that the trial court strike
    the testimony of John Mata and dismiss count 14. The trial court
    denied the request, finding the misconduct was not prejudicial
    and did not warrant dismissal of the charge. The trial court,
    however, admonished the jury that Tseng was not being charged
    with Nicholas Mata’s death and that John Mata’s testimony was
    relevant only to the unlawful prescribing count.
    2.    Michael Huggard
    The prosecution elicited testimony from the doctor who
    conducted the autopsy of Huggard, the victim in count 11 (an
    unlawful prescription charge), that Huggard had died. Tseng’s
    counsel complained that “this is evidence of another instance of
    prosecutorial misconduct. . . . Huggard . . . passed away after the
    other three counts [Nguyen, Ogle, and Rovero], and his death was
    not to be mentioned. They were only limited to the overdose.” The
    prosecutor responded that Huggard was “in the window” because he
    had died in 2009. Tseng’s counsel moved for a mistrial. The court
    instructed the prosecution to determine Huggard’s date of death.
    After the lunch break, the prosecution stated that Huggard
    had died in 2010 and that they had been mistakenly operating
    38
    under the assumption that Huggard had died in 2009. Thereafter,
    the trial court denied the mistrial motion and subsequently
    admonished the jury to disregard the testimony of Huggard’s death
    and to consider only the evidence about the unlawful prescription
    allegation. At the close of the case, the trial court also instructed
    the jury not to “consider for any purpose any offer of evidence that
    was rejected or any evidence that was stricken by the court; treat it
    as though you had never heard it.”
    Before this court, Tseng argues the trial court’s instructions
    were insufficient to cure the harm and that the trial court should
    have stricken John Mata’s testimony, dismissed count 14 after the
    first instance of misconduct, and granted Tseng’s mistrial motion
    after the reference to Huggard’s death.
    B.    Analysis
    The Attorney General concedes, and we agree, that the
    prosecution’s questions referencing Mata’s and Huggard’s deaths
    constituted prosecutorial misconduct because the trial court had
    previously ordered that this evidence not be presented to the jury.
    (See People v. Bell (1989) 
    49 Cal.3d 502
    , 532 [holding that the
    deliberate asking of questions and calling for inadmissible and
    prejudicial answers is misconduct].)
    We conclude, however, that the prosecution’s actions did not
    violate Tseng’s due process rights and did not warrant reversal.
    The prosecution’s misconduct was not so pervasive as to infect the
    trial with such “ ‘unfairness as to make the resulting conviction
    a denial of due process.’ ” (Darden v. Wainwright (1986) 
    477 U.S. 168
    , 181.) Furthermore, given the evidence of the other overdose
    deaths that was properly admitted, “it is not reasonably probable
    that a result more favorable to defendant would have been reached
    in the absence of any alleged misconduct.” (People v. Turner (1994)
    39
    
    8 Cal.4th 137
    , 194, abrogated on another ground by People v. Griffin
    (2004) 
    33 Cal.4th 536
    , 555, fn. 5.) We assume the jury followed the
    trial court ’s admonitions, which further obviated any prejudice.
    (People v. Jones (1997) 
    15 Cal.4th 119
    , 168, overruled on other
    grounds by People v. Hill (1998) 
    17 Cal.4th 800
    .)
    In addition, the trial court did not abuse its discretion in
    denying the motion for a mistrial. “A mistrial should be granted
    if the court is apprised of prejudice that it judges incurable by
    admonition or instruction. [Citation.] Whether a particular incident
    is incurably prejudicial is by its nature a speculative matter, and
    the trial court is vested with considerable discretion in ruling on
    mistrial motions.” (People v. Haskett (1982) 
    30 Cal.3d 841
    , 854.)
    We conclude that the trial court did not abuse its discretion here,
    particularly given that the jury had already heard evidence about
    the nine uncharged deaths of Tseng’s patients.
    V.    The Trial Court Did Not Err in Reopening Closing
    Arguments
    Tseng argues that the trial court’s decision to reopen the
    argument during deliberations coerced the jury to return a guilty
    verdict on the murder charges and thus violated her due process
    rights. We disagree.
    A.    Background
    On the eighth day of deliberations, the jury submitted two
    questions to the trial court: “Do we have to be unanimous in not
    guilty of second degree to deliberate on manslaughter? [And]
    [w]hat if we are split on second degree?” After consulting with,
    and obtaining the agreement of the parties, the court instructed
    the jury with CALJIC No. 17.49 [Use of Multiple Verdict Forms—
    Implied Acquittal—First], which informed the jury in pertinent
    part: “Since the lesser offenses are included in the greater, you
    40
    are instructed that if you find the defendant guilty of the greater
    offenses, you should not complete the verdicts on the corresponding
    lesser offenses, and those verdicts should be returned to the
    court unsigned by your foreperson. If you unanimously find
    the defendant not guilty of the felonies charged, you then need to
    complete the verdicts on the lesser included offenses by determining
    whether the defendant is guilty or not guilty of the lesser included
    crimes, and the corresponding verdicts should be completed and
    returned to the court signed by your foreperson.” The court also
    reminded the jurors to consider the evidence about each murder
    count separately and carefully review all of the evidence. The jury
    resumed deliberations.
    The next day, outside the jury’s presence, the trial court
    indicated it had planned to instruct the jurors (pursuant to defense
    counsel’s request) with CALJIC No. 17.10 [Conviction of Lesser
    Included or Lesser Related Offense—Implied Acquittal— First] to
    augment the instruction it had given the previous day. The trial
    court explained it had also decided to grant the parties’ requests
    to argue for 10 additional minutes “regarding that specific issue of
    greater versus lesser” offense. The trial court also acknowledged
    that the bailiff had informed the court that jurors stated they “had
    resolved the issue that was in their question.” The trial court said
    it was inclined to proceed as it had previously planned.
    Tseng’s counsel objected, pointing out that the trial court
    was permitted to reopen argument only if the jury is “deadlocked.”
    The trial court responded: “It appears that they’re deadlocked
    based on their questions yesterday, or at least they were divided,
    and so the court can allow it under those circumstances, as well.”
    The jurors entered the courtroom, and the trial court
    instructed in accordance with CALJIC No. 17.10, which informed
    them that “the court cannot accept a guilty verdict on a lesser crime
    41
    unless you have unanimously found the defendant not guilty of
    the charged greater crime,” and then returned the jurors to the jury
    room to decide whether further argument would be helpful. Shortly
    thereafter, the jury sent the trial court the following request: “We
    would like to listen to the additional argument!” The jury returned
    to the courtroom and heard 10 minutes of argument from each side,
    focusing on the issue previously identified by the jury. The jury
    continued deliberations for the remainder of that day, and at the
    end of the following day—the 10th day of deliberations—the jury
    reached its verdicts.
    B.    Analysis
    When faced with questions from a jury, including a question
    referencing an impasse, “a court must do more than figuratively
    throw up its hands and tell the jury it cannot help. It must at
    least consider how it can best aid the jury.” (People v. Beardslee
    (1991) 
    53 Cal.3d 68
    , 97 (Beardslee), italics omitted.) A further
    argument is permissible where a jury reports it has reached an
    impasse in deliberations. (People v. Young (2007) 
    156 Cal.App.4th 1165
    , 1170; see Cal. Rules of Court, rule 2.1036(b)(3).)
    Here, the jury initially indicated that it was “split on
    second degree.” The jury’s subsequent communications indicated
    it had resolved one of the questions coupled with its desire to
    hear additional argument. Taken together, the jury’s inquiries
    demonstrated that it was struggling with its deliberations and had
    reached an impasse. Under these circumstances, we conclude that
    the trial court’s decision to allow the parties to reopen argument
    to assist the jury in its deliberative process was not an abuse of
    discretion. (People v. Ardoin (2011) 
    196 Cal.App.4th 102
    , 129, fn. 10
    [further argument is permissible “when a jury expresses confusion
    and an impasse in its deliberations related to the governing law and
    42
    instructions, particularly in light of the trial court’s broad discretion
    to alter the sequence of trial proceedings”].)
    By asking if additional argument might be helpful, the trial
    court did no more than ascertain the reasonable probability of
    resolving the impasse and a means by which that might be
    accomplished. Further, the procedure was neutral, giving each
    side a brief opportunity to argue. The trial court did not make any
    coercive remarks or give any coercive instructions. It did not urge
    the jurors to reach an agreement. We see no abuse in the court’s
    exercise of its discretion. Furthermore, even if the trial court erred
    in allowing further argument, there was no reasonable probability
    that Tseng suffered prejudice as a result of that decision. (See
    Beardslee, 
    supra,
     53 Cal.3d at pp. 97-98 [a court’s error in resolving
    concerns or questions from the jury during the deliberation
    reviewed for harmless error under state law prejudice standard].)
    VI.   The Imposition of Consecutive Sentences on
    Counts 1 and 4 Did Not Violate Section 654
    Tseng argues that the consecutive sentences imposed on her
    second degree murder convictions for count 1 (murder of Nguyen)
    and count 4 (murder of Rovero) violated section 654. She maintains
    that the trial court should have run those sentences concurrently
    with the sentence on her second degree murder conviction for
    count 2 (murder of Ogle).
    Pursuant to section 654, subdivision (a): “An act or omission
    that is punishable in different ways by different provisions of law
    shall be punished under the provision that provides for the longest
    potential term of imprisonment, but in no case shall the act or
    omission be punished under more than one provision.” (Ibid.)
    Section 654 precludes multiple punishments not only for a single
    act but also for an indivisible course of conduct. (People v. Hester
    (2000) 
    22 Cal.4th 290
    , 294.)
    43
    Tseng contends that because the prosecution’s theory at
    trial was that Tseng committed the charged crimes pursuant to
    a common pattern of criminal conduct of overprescribing drugs
    to her patients, and pursuant to a single intent and objective of
    enriching herself, separate sentencing for the murder convictions
    was impermissible under section 654. Even if we were to consider
    that all of the murders were committed with a single generalized
    intent and objective, separate sentencing would still be permissible
    under section 654.
    Here, the crimes involved separate murder victims, Nguyen,
    Ogle, and Rovero and occurred months apart. Acts of violence
    against separate victims at different times may be separately
    punished. (See, e.g., People v. Price (1991) 
    1 Cal.4th 324
    , 492
    [section 654 does not preclude separate punishments for crimes of
    violence committed against separate victims]; People v. Kwok (1998)
    
    63 Cal.App.4th 1236
    , 1255-1256 [where the offenses are temporally
    separated in such a way as to afford the defendant an opportunity
    to reflect and to renew his or her intent before committing the next
    one, section 654 does not apply].) Accordingly, the second degree
    murder convictions of Nguyen, charged in count 1, and Rovero
    charged in count 4, were not subject to section 654.
    VII. The Cumulative Error Doctrine Does Not Apply
    Tseng contends even if the alleged individual errors
    addressed above were harmless when viewed in isolation, the
    cumulative effect of the errors warrants reversal of her convictions.
    “Under the cumulative error doctrine, the reviewing court must
    ‘review each allegation and assess the cumulative effect of any
    errors to see if it is reasonably probable the jury would have
    reached a result more favorable to defendant in their absence.’
    [Citation.] When the cumulative effect of errors deprives the
    44
    defendant of a fair trial and due process, reversal is required.”
    (People v. Williams (2009) 
    170 Cal.App.4th 587
    , 646.) Because
    Tseng has not demonstrated that the trial court committed any
    error, the “cumulative” error doctrine does not apply.
    DISPOSITION
    The judgment is affirmed.
    CERTIFIED FOR PARTIAL PUBLICATION.
    ROTHSCHILD, P. J.
    We concur.
    CHANEY, J.
    BENDIX, J.
    45