United States v. Lopez-Diaz , 794 F.3d 106 ( 2015 )


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  •           United States Court of Appeals
    For the First Circuit
    Nos. 13-2113
    13-2118
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    JOSÉ LÓPEZ-DÍAZ; CARLOS LÓPEZ-DÍAZ,
    Defendants, Appellants.
    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. Francisco A. Besosa, U.S. District Judge]
    Before
    Lynch, Kayatta, and Barron,
    Circuit Judges.
    John H. Cuhna, Jr., with whom Jaime Zambrana and Cuhna &
    Holcomb, P.C., were on brief, for appellant José López-Díaz.
    H. Manuel Hernández for appellant Carlos López-Díaz.
    John A. Mathews II, Assistant United States Attorney, with
    whom Rosa Emilia Rodríguez-Vélez, United States Attorney, and
    Nelson Pérez-Sosa, Assistant United States Attorney, Chief,
    Appellate Division, were on brief, for appellee.
    July 13, 2015
    KAYATTA,      Circuit Judge.       These consolidated appeals
    present a rare example of a trial record that lacks sufficient
    evidence to support a guilty verdict returned by a jury.              Carlos
    López-Díaz ("Carlos"), a dentist, operated a mobile dental clinic
    in Puerto Rico.1      His brother, José López-Díaz ("José"), is a
    medical   doctor   who    billed   Medicare    for   services   to   Carlos's
    patients that José never provided.            The jury convicted José of
    health-care fraud, conspiracy to commit health-care fraud, and
    aggravated identity theft for using personal information gathered
    from Carlos's patients.       Based on the fact that Carlos gave José
    access to his patient billing information while knowing that José
    never treated, or even saw, any of the patients, the government
    also obtained a verdict against Carlos on the conspiracy and
    aggravated identity theft charges.            While we find no error in
    José's convictions, we reverse the verdict against Carlos because
    the prosecution did not present enough evidence to support his
    convictions without undue speculation.
    I.   Background
    We limit our summary here to the basic contours of the
    health-care fraud scheme and proceedings below, reserving a fuller
    exposition of the relevant facts in the proper light for our
    1 For the sake of convenience, we refer to the defendants by
    their first names only.
    - 3 -
    discussion of particular issues.                 See United States v. Flores-
    Rivera, 
    787 F.3d 1
    , 9 (1st Cir. 2015).
    Between    January        2006    and    July      2011,   José    submitted
    10,231      claims      for     reimbursement              to      Medicare,     totaling
    approximately $3,500,000, of which Medicare actually paid about
    $700,000.     He submitted the claims using Health Insurance Claim
    Form 1500 ("CMS 1500 Form"), a form used for Medicare billing by
    Centers     for   Medicare       and     Medicaid          Services     ("CMS"),      which
    administers the Medicare program.                    As it turns out, José never
    provided    any   of    the    medical        procedures        for   which    he    sought
    reimbursement.         In some instances, he claimed to have provided
    services to Medicare beneficiaries who were deceased.                               He also
    repeatedly billed for the same unusual procedures.                             José filed
    1,177 claims (far more than anyone else in Puerto Rico) for a
    procedure typically performed by urologists, and more than half of
    those claimed urological procedures were for female patients, even
    though the procedure can be performed on male patients only.
    In order to submit those false claims, José needed the
    Medicare     beneficiaries'            identifying           and      health     coverage
    information.      His principal sources were the patient records of
    his brother Carlos, a licensed dentist.                         Beginning sometime in
    2007, Carlos operated a mobile dental clinic--essentially, a large
    trailer    with   three       dental    chairs       and    necessary     equipment--to
    provide dental services to underserved patients at nursing homes,
    - 4 -
    mental   health   residential    facilities,       and   schools.     Carlos
    employed a coordinator to visit potential facilities, market the
    clinic, schedule visits, and collect patient medical histories,
    consent and release forms, and health coverage information before
    the mobile clinic visited each facility. Carlos also employed two
    dental assistants.
    José never treated or even saw any of Carlos's patients.
    Rather, José testified that Carlos gave him access to dental
    patient information as part of a safety protocol developed by the
    brothers after one of Carlos's elderly patients suffered a heart
    attack or stroke in the mobile clinic in late 2007, an event
    confirmed by the director of the stricken patient's nursing home.
    Two of the witnesses called by the government, Leslie Williams-
    Nieves ("Williams") and Nahír Rodríguez-Candelario ("Rodríguez"),
    explained that they were told that a regulation enacted by the
    Puerto Rico State Department required Carlos to have his patients
    medically evaluated and to use a medical consultant.            When asked
    about this regulation, José said that he could not recall its
    name.2    Pursuant   to   the   protocol,   José    paid   Carlos's   dental
    assistants to take and record vital signs of dental patients before
    Carlos treated them, with José available for phone consultations,
    2 José also testified that he and Carlos learned at a
    conference on mobile clinics that a mobile dental clinic should
    have a consulting physician.
    - 5 -
    and José would later review the patient files, vital signs, and
    medical histories to see that Carlos's staff was acting properly.3
    The parties agree that José did indeed pay the dental assistants
    to take and record patient vital signs, and the actual patient
    records show that José did review, or at least initial, that
    information   in   each   record.     According   to   José's   testimony,
    "[t]here are several formulas through which the physician can be
    paid for these services."
    José also gathered from Carlos's patient records the
    personal identifying information needed to bill Medicare.            José
    used that information to complete and submit CMS 1500 Forms for
    medical procedures that he never performed on those patients. José
    paid Williams4 and Rodríguez,5 employees of his wife's pediatric
    3One of Carlos's dental assistants testified that José "would
    be given the vital signs taken from patients. And then he would
    correct them, he would observe them."
    4 For eight or nine months in 2009 and 2010, Williams completed
    sections of CMS 1500 Forms for José using a "log book" that listed
    the necessary billing information. In May 2010, three months after
    she stopped billing for José, Williams began working during the
    evenings for Carlos, entering patient billing information into an
    electronic database. At that point, Williams realized based on
    the service locations in Carlos's patient files and in José's log
    book that José's patient information came from Carlos's patient
    files.
    5 From April 2010 to July 2011, Rodríguez worked for Carlos
    on Fridays entering patient data from Carlos's patient files into
    a computer. From August to December 2010, Rodríguez also entered
    patient information into CMS 1500 Forms for José, for which José
    paid her $1 per form. Rodríguez recognized the patient files she
    used for José's CMS 1500 Forms as Carlos's dental patient files.
    - 6 -
    clinic, to complete his CMS 1500 Forms using information gleaned
    from Carlos's patient files.                    Williams and Rodríguez also did
    separate          billing   and    data    entry   work   part-time    for   Carlos.
    Williams and Rodríguez testified that they filled out José's CMS
    1500 Forms either at their own homes or at José's home office, and
    never in Carlos's presence or at his office.                        The government
    stipulated that Carlos did not sign or prepare any of José's CMS
    1500 Forms, and that Carlos's name did not appear on those forms.
    Investigators eventually caught on to José's falsified
    bills, and a grand jury indicted José, Carlos, Williams, Rodríguez,
    and others for conspiracy to commit health-care fraud in violation
    of 
    18 U.S.C. § 1349
     (count one) and health-care fraud in violation
    of 
    18 U.S.C. § 1347
     (counts ten through thirty), and José and
    Carlos for aggravated identity theft in violation of 18 U.S.C.
    § 1028A(a)(1) (counts thirty-one through thirty-five).                     All of the
    defendants except for Carlos were also indicted for additional
    counts of health-care fraud (counts two through nine).6                      After a
    fifteen-day trial, the jury convicted José of all counts.7                          The
    jury       also    convicted      Carlos   of    the   conspiracy   and   aggravated
    identity theft counts, but acquitted him of the substantive health-
    6
    Prior to trial, the government dropped the charges against
    all other indicted conspirators, and called Williams and Rodríguez
    as witnesses in the government's case-in-chief.
    7
    The government dismissed one count                     (count      twenty)   of
    substantive health-care fraud before trial.
    - 7 -
    care fraud counts.             The district court sentenced José to a total
    of 121 months in prison.            Carlos received a total prison sentence
    of thirty-six months and a day.                    Carlos and José timely filed
    separate appeals challenging their convictions.8
    II.    Carlos's Insufficiency of the Evidence Claim
    We turn first to Carlos's appeal from the order denying
    his motion for acquittal based on insufficient evidence to convict.
    See Fed. R. Crim. P. 29.             We review de novo the denial of a Rule
    29 motion for acquittal, asking whether a reasonable jury could
    find guilt beyond a reasonable doubt.                  United States v. Burgos-
    Montes, 
    786 F.3d 92
    , 112 (1st Cir. 2015). In assessing a challenge
    to the sufficiency of the evidence, we "examine the evidence,
    together with all inferences that may be reasonably drawn from it,
    in the light most favorable to the prosecution."                United States v.
    Andújar, 
    49 F.3d 16
    , 20 (1st Cir. 1995).                 Where, as here, "a jury
    draws inferences from circumstantial evidence, a reviewing court
    should refrain from second-guessing the ensuing conclusions as
    long       as    (1)    the   inferences   derive    support   from   a   plausible
    rendition of the record, and (2) the conclusions flow rationally
    from those inferences."             United States v. Spinney, 
    65 F.3d 231
    ,
    234 (1st Cir. 1995). Our deference to jury verdicts is not without
    limit, however:               "[I]f the evidence viewed in the light most
    8   This court consolidated the two appeals.
    - 8 -
    favorable to the verdict gives equal or nearly equal circumstantial
    support to a theory of guilt and a theory of innocence of the crime
    charged, this court must reverse the conviction," because in such
    a case "a reasonable jury must necessarily entertain a reasonable
    doubt."   United States v. Flores-Rivera, 
    56 F.3d 319
    , 323 (1st
    Cir. 1995) (internal quotation marks and emphasis omitted).
    The parties agree that the conspiracy charge9 against
    Carlos turns largely on whether the jury could reasonably find
    that Carlos "knew" that his brother was defrauding Medicare.   The
    parties likewise agree that the aggravated identity theft counts
    required the jury to find that Carlos, either as a principal or
    aider and abettor, "knew" of the underlying health-care fraud.10
    9 
    18 U.S.C. § 1349
     provides as follows:      "Any person who
    attempts or conspires to commit [health-care fraud] shall be
    subject to the same penalties as those prescribed for the offense,
    the commission of which was the object of the attempt or
    conspiracy."    The substantive offense of health-care fraud
    consists of (a) "knowingly and willfully execut[ing], or
    attempt[ing] to execute, a scheme or artifice," either (1) "to
    defraud any health care benefit program," or (2) "to obtain, by
    means of false or fraudulent pretenses, representations, or
    promises, any of the money or property owned by, or under the
    custody or control of, any health care benefit program"; and doing
    so (b) "in connection with the delivery of or payment for health
    care benefits, items, or services." 
    Id.
     § 1347.
    10 To convict Carlos for aggravated identity theft, the
    government needed to prove that, "during and in relation to
    [health-care fraud], [the defendant] knowingly transfer[red],
    possesse[d], or use[d], without lawful authority, a means of
    identification of another person." 18 U.S.C. § 1028A(a)(1); see
    also id. § 1028A(c)(5).   To convict Carlos under an aiding and
    abetting theory, the government needed to establish, among other
    things, that Carlos "consciously shared [José's] knowledge of the
    underlying criminal act, and intended to help [José]."     United
    - 9 -
    Such knowledge for either offense could be proven by knowledge in
    fact, or by proof of "willful blindness."      To establish willful
    blindness, the government had to show that Carlos (1) "was aware
    of a high probability of wrongdoing," and (2) "consciously and
    deliberately avoided learning of the wrongdoing."     United States
    v. Appolon, 
    695 F.3d 44
    , 57 (1st Cir. 2012).
    The government did manage to prove that Carlos knew that
    José gathered from the files of Carlos's patients information to
    be used by José to bill Medicare for something.    In its brief and
    at argument, the government also claimed that the evidence showed
    that Carlos paid his employees to complete the CMS 1500 Forms used
    by José to bill Medicare.   Apparently accepting the government's
    view of its proof in denying Carlos's motion to acquit, the
    district court expressly pointed to such payments by Carlos.    See
    United States v. López-Díaz, 
    940 F. Supp. 2d 39
    , 64 (D.P.R.
    2013) ("[Carlos] even paid his employees for filling out billing
    forms when [José] was unable to pay them.").      As the government
    clarified after oral argument, however, the record shows only that
    Carlos paid his employees to record his patients' vital signs for
    José's review, and only when José was unavailable to make this
    payment himself.11 Further, the government points us to no evidence
    States v. Lyons, 
    740 F.3d 702
    , 715 (1st Cir. 2014) (quoting
    Spinney, 
    65 F.3d at 235
    ).
    11Carlos also paid Williams and Rodríguez to help with billing
    and data entry for his legitimate dental services. There is no
    - 10 -
    that José needed (or even used) the vital signs data to deceive
    Medicare.
    Of   course,       if    Carlos    knew    that    José    had   no   basis
    whatsoever to bill Medicare for any amount in connection with
    Carlos's patients, then his knowledge that José was billing for
    something could suffice to sustain the verdict.                         So the question
    is posed:     Did Carlos know that José could not bill merely for the
    gathering and review of vital signs information?                        On this crucial
    point, the record is a complete blank.                   The record does not even
    show that such a file review is not billable, much less that Carlos
    knew it was not billable.                 The government did not submit any
    evidence challenging the existence of the regulation that its own
    witnesses     cited   as     a    reason       for   taking     the    vital   signs    and
    reviewing them.       Nor did it seek an instruction on the regulation.
    The   government      also       failed    to    counter      José's    testimony      that
    "[t]here are several formulas through which the physician can be
    paid"   for    services      to       mobile    dental   clinics.         Instead,     the
    government simply argued in closing that José did not bill for
    reviewing the vital signs.                This was a compelling point against
    José, but carried weight against Carlos only if there was evidence
    that Carlos knew what José was billing for.
    evidence that Carlos ever paid Williams and Rodríguez to help José
    with his billing.
    - 11 -
    In an effort to fill this gap, the government in its
    brief tells us that Carlos "is also a medical provider, submits
    dental billing claims himself, and understands what is required of
    medical provider [sic] in order to submit claims."        Cf. United
    States v. Singh, 
    390 F.3d 168
    , 188 (2d Cir. 2004) (jury could infer
    that physician/clinic owner was aware that claims he submitted
    were false, based on his possession of and familiarity with the
    applicable billing code guidebook and manual, and discussions with
    employees revealed his "detailed knowledge" about billing).      The
    government, however, cites no evidence to support this crucial
    assertion, nor can we find any.   To the contrary, the record shows
    that the dental billing codes (with which one could assume Carlos
    was familiar) were so different from the physician billing codes
    that the government's own witness on Medicare billing professed
    almost complete ignorance about dental billing codes.12
    Our own review of the record points to no other means to
    close this gap.   Notwithstanding the indictment's express charge
    that the aim of the conspiracy was to enrich both José and Carlos,
    there is no evidence at all that Carlos received even one penny of
    the fraudulent proceeds.   What little else we could find on our
    own review of the record added nothing to the government's case;
    12 While some evidence supported an inference that Carlos
    sometimes billed Medicare Advantage plans, there was no evidence
    that he used medical or surgical billing codes, rather than dental
    billing codes, in order to bill those plans.
    - 12 -
    rather, it helped Carlos.13   We also do not think that whether and
    when file reviews are billable to Medicare are matters of common
    knowledge that lay jurors might bring to bear to connect the too-
    widely spaced dots in the government's case.
    José's   behavior   as   described   by   the   government's
    evidence offered no hint that Carlos was aware of the nature of
    José's billing.    The fact that José indisputably initialed the
    patient files suggests strongly that he was trying to deceive
    someone other than Medicare (e.g., Carlos?), given that the vital
    signs data from Carlos's patients provided no information that
    José used to bill or to justify billing for the surgical and other
    procedures he claimed to have performed.       José was also careful
    that Williams and Rodríguez, his wife's employees whom he paid to
    13 Carlos's clinic coordinator marketed the dental clinic to
    directors of nursing homes and residential facilities in part
    through PowerPoint slides. One slide indicated that the clinic
    had a "consultant physician," whom the coordinator understood to
    be José.    That same coordinator, who also collected patients'
    medical histories, testified that José told her to focus on whether
    the patient had had recent surgery, in order to prevent adverse
    reactions to the dentist's anesthesia. And the consent and release
    forms that the coordinator collected from Carlos's patients did
    not clearly prohibit use of patient information to bill for a file
    review by another doctor.     The forms stated that the patients
    consented to use of their information to "carry out your treatment,
    payment activities and operations in your health care."         The
    attached notice of privacy practices informed the patients that
    Carlos "may use your health information for treatment (e.g.,
    sending copy of your clinical information to a specialist as part
    of your referral), to obtain payment for treatment (e.g., bill an
    insurance agency), or for other health care operations (e.g.,
    evaluate the quality of treatment you receive)" (emphasis added).
    - 13 -
    fill out the demographic and health plan sections of his CMS 1500
    Forms, performed their task out of Carlos's presence.               Neither did
    those two employees suggest that Carlos knew the services for which
    José was billing.
    Though not clear from its brief, the government appears
    to argue that the jury could infer Carlos's knowledge of José's
    fraud if the jury doubted the utility of the treatment protocol,
    and thus the plausibility of Carlos's explanation for handing his
    files to José.      If the evidence allowed the jury to conclude that
    the treatment protocol was obviously useless, then the jury might
    have inferred that Carlos could not possibly have thought the
    protocol valuable.          And from that the jury could, perhaps, have
    further inferred that Carlos must have had some other, criminal,
    reason for handing over his patient files to José, and thus still
    further inferred that Carlos must have had the requisite knowledge
    of José's fraud.
    The government, though, did not present any evidence to
    support such a chain of inferences.              Acting almost as if it bore
    no   burden    of   proof    in   making   its    case   against    Carlos,   the
    government did not present any direct evidence that the protocol
    was, in fact, not an accepted or recognized method of ensuring
    that   the    mobile   clinic's     practice      was    adhering   to   medical
    - 14 -
    standards.14   Nor did the government present any direct evidence
    that Carlos believed the protocol was useless.           And, indeed, the
    fact that Carlos supervised his dental assistants in taking vital
    signs--and paid them for doing so when José was out of town--would
    seem to suggest that Carlos viewed the protocol as beneficial.           As
    a result, the record cannot support the first link in a chain of
    inferences that would be needed to justify the jury's verdict
    against Carlos on these grounds.        See United States v. Burgos, 
    703 F.3d 1
    , 10 (1st Cir. 2012) ("[W]e are loath to stack inference
    upon inference in order to uphold the jury's verdict." (quoting
    United States v. Valerio, 
    48 F.3d 58
    , 64 (1st Cir. 1995))).
    Our respect for a jury's ability to get it right does
    nevertheless cause us to pause cautiously before concluding that
    the evidence is insufficient to support the verdict.              We note,
    though, that the prosecutor in closing told the jury that "it
    doesn't matter for purposes of this case if [Carlos] knew what
    [José] was writing on those [CMS 1500 forms].           It doesn't make a
    difference."   The prosecutor also seems to have slipped into an
    argument   based   on   a   lesser    negligence   standard,   rather   than
    knowledge or willful blindness: "[Carlos], as a dentist, should
    14The government also failed to challenge one of the apparent
    rationales for the protocol, that it was required by some
    Commonwealth regulation.    If there is no such regulation, the
    government easily could have called witnesses from the relevant
    Puerto Rico government departments to debunk this rationale.
    - 15 -
    have known better, or should have known better to question himself-
    -or his brother in this case--what he was billing for if he--once
    he knew he wasn't even seeing his patients."                  While we have not
    been asked to vacate the verdict because of these statements, and
    while the statements might be read in context in a manner that
    would        render    them   proper,   they   do   explain   how   a   jury   could
    mistakenly convict Carlos in light of the absence of any evidence
    that his brother could not bill Medicare at all for his work under
    the protocol, or that Carlos knew of or willfully ignored such a
    limitation.           We have in mind, too, the fact that in a three-week
    trial focused mostly on José, both the prosecutor and the trial
    judge themselves mistakenly thought that Carlos paid to have some
    of José's falsified claim forms completed.15              In any event, the key
    point now is that the record contains insufficient evidence to
    support a reasonable inference that, beyond a reasonable doubt,
    Carlos knew that José had no basis for submitting any type of claim
    in connection with his review of Carlos's patient records.
    We therefore vacate Carlos's convictions and remand for
    a judgment of acquittal of Carlos on all counts.16
    15
    See López-Díaz, 940 F. Supp. 2d at 64 ("[Carlos] even paid
    his employees for filling out billing forms when [José] was unable
    to pay them.").
    16   We need not address Carlos's remaining arguments.
    - 16 -
    III.      José's Claims
    José does not challenge on appeal the sufficiency of the
    evidence against him on any of the counts.             Rather, he points to
    what he claims are errors in the indictment, the review of alleged
    Brady material, and the jury instructions.                We address these
    claimed errors in turn.
    A.    The Sufficiency of the Indictment's Aggravated Identity Theft
    Counts
    José first argues that the aggravated identity theft
    counts (counts thirty-one through thirty-five) of the superseding
    indictment were defective for lack of a corresponding substantive
    health-care fraud count.        The aggravated identity theft counts of
    the indictment alleged that José knowingly possessed, transferred,
    or   used   the    identification    of   another    person   without   lawful
    authority    "in     relation   to    felony   violations     enumerated   in
    subsection (c) [of 18 U.S.C. § 1028A] as: (1) Healthcare Fraud, a
    violation of [
    18 U.S.C. § 1347
    ], not charged herein."             Each count
    listed a specific individual whose identity was used to commit the
    offense.     The indictment did not include separate section 1347
    health-care fraud charges with respect to the individuals named in
    the aggravated identity theft counts.          According to José, because
    the government did not separately charge and convict him of the
    - 17 -
    predicate    health-care   fraud   crimes    underlying   the     aggravated
    identity theft charges, the indictment was defective.17
    The   predicate   felony   violation   in   section    1028A    is
    simply an element of the crime of aggravated identity theft.               The
    statute requires proof beyond a reasonable doubt of a felony
    violation, not a felony conviction.         It therefore did not require
    the government to charge José separately with the predicate health-
    care fraud offenses.    See United States v. Stepanian, 
    570 F.3d 51
    ,
    59-60 & n.15 (1st Cir. 2009) ("To the extent [the defendant] wishes
    to argue that the government must separately allege and charge the
    predicate crime in order to charge a § 1028A offense . . . the
    statutory language lends no support to that proposition."); see
    also United States v. Jenkins-Watts, 
    574 F.3d 950
    , 970 (8th Cir.
    2009).    Moreover, the indictment adequately informed José that the
    predicate offenses for the aggravated identity theft counts were
    health-care fraud crimes "not charged herein."          See United States
    v. Savarese, 
    686 F.3d 1
    , 6 (1st Cir. 2012) ("[A]n indictment is
    adequate if it specifies the elements of the offense charged,
    fairly apprises the defendant of the charge against which he must
    defend, and allows him to contest it without fear of double
    17 Although the basis for this claim of error is not clear
    from José's brief, we interpret this argument to be a challenge to
    the sufficiency of the indictment.
    - 18 -
    jeopardy.").        We therefore detect no error in the aggravated
    identity theft counts of the indictment.
    B.   In Camera Review of Potential Brady Material
    José next faults the district court for rejecting his
    request to order the government to turn over documents José claims
    were potentially exculpatory.       See Brady v. Maryland, 
    373 U.S. 83
    ,
    87 (1963) (government has an obligation to disclose evidence in
    its possession favorable to a criminal defendant and material to
    guilt).      In particular, José argues that he was entitled to
    materials related to a government search of the offices of one of
    the Medicare Advantage insurers he fraudulently billed, Medical
    Card System ("MCS").
    Both    defendants   filed     separate   pre-trial    motions
    requesting specific exculpatory and impeachment material.               The
    requested information included the following materials:
    Any documents, reports, affidavits in support
    of search warrants, grand jury subpoenas, or
    other materials and information regarding any
    investigation of any wrongdoing by any health
    insurance company that processes any Medicare
    or other insurance claim that is the subject
    of the charges alleged in the indictment,
    including, but not limited to, MCS . . . .
    The district court referred the matter to a magistrate judge, who
    granted the defendants' request subject to a protective order that
    restricted    the    disclosure   and   use   of   patients'   individually
    identifiable health information.          The government did not disclose
    - 19 -
    prior to trial any documents related to a search warrant executed
    at MCS.   On the fifth day of trial, however, before the defendants
    cross-examined   a   fraud   investigator   at   MCS,   Carlos's   defense
    attorney renewed his request in light of press coverage of a
    government search of MCS offices.     The government agreed to review
    the MCS search documents during a pre-scheduled eight-day break in
    the trial, and to disclose any exculpatory or impeachment material,
    while complying with the protective order.        On cross-examination,
    the MCS fraud investigator confirmed that government agents had
    searched the MCS office, but she did not speak with the agents and
    did not know whether the investigation was ongoing.
    The government again produced no documents, and on the
    next day of trial, Carlos's attorney asked that "the Court order
    them to produce those records or that they be submitted to the
    Court and that copies be left in the record under seal for future
    review, if necessary."       The government agreed to provide the MCS
    search warrant affidavit for the court's in camera review, to
    determine if the search may have revealed information relevant to
    Carlos and José's case.      The next day, the district court informed
    counsel that its "review of the search warrant, the application,
    and affidavit has completed, and I don't think any of it has any
    relevance to this case. . . . [Y]our motion is denied."               The
    district court then denied Carlos's motion to seal the search
    warrant, application, and affidavit and make those documents part
    - 20 -
    of the record in this case, because the court was "worried about
    making it a part of this record even as a sealed document."                The
    district court and government noted that the documents could be
    made available to this court if necessary for appellate review.
    Shortly thereafter, José's counsel joined Carlos's motions.
    On appeal, José asks us to review the search warrant,
    application, and affidavit to determine whether the district court
    erred in refusing to require disclosure by the government.                  We
    review a district court's Brady determinations after its in camera
    review for an abuse of discretion.            United States v. Rosario-
    Peralta, 
    175 F.3d 48
    , 57 (1st Cir. 1999); see also United States
    v. Caro-Muñiz, 
    406 F.3d 22
    , 28-29 (1st Cir. 2005).
    We decline the invitation to join José on his fishing
    expedition.     His theory about the relevance of the MCS documents
    is   that   those    documents   "could     have   very    well"   contained
    instructions from MCS to physicians, including José, to submit
    false information on CMS 1500 Forms, thereby corroborating José's
    testimony     that   he   used   inaccurate   billing     codes    based    on
    instructions from health insurance companies.             How such evidence
    would have exonerated José from billing for urological services
    performed on women whom he did not treat is a complete mystery
    concerning which José offers no insight. Additionally, José points
    to nothing that suggests that the government's search of MCS had
    anything to do with its telling doctors to use incorrect billing
    - 21 -
    codes.     Hence his theory of relevance amounts to little more than
    "mere speculation."    United States v. Prochilo, 
    629 F.3d 264
    , 269
    (1st Cir. 2011).     The district court therefore would have acted
    well within its discretion even if it had refused to conduct the
    in camera review in the first place.         See 
    id. at 268-69
     ("To
    justify [in camera] review, the defendant must make some showing
    that the materials in question could contain favorable, material
    evidence.      This showing cannot consist of mere speculation."
    (citations omitted)).     Because José's request amounts to no more
    than a "shot in the dark," United States v. Espinal-Almeida, 
    699 F.3d 588
    , 618 (1st Cir. 2012), we find it unnecessary to review
    the sealed documents that the district court viewed in camera.
    C.   Challenges to the Jury Instructions
    1.    Prior Knowledge for Aiding and Abetting
    José claims that the district court erred in failing to
    instruct the jury that, in order to convict him of aiding and
    abetting aggravated identity theft, the jury had to find that José
    had "prior knowledge" of one purported element of aggravated
    identity theft: that the patients' identifying information was
    obtained without lawful authority.18     In support of this argument,
    18José also argues that, for the counts of conviction
    involving deceased patients, he needed prior knowledge that the
    patients were in fact deceased when José claimed to have treated
    them.   None of the aggravated identity theft counts involve
    deceased beneficiaries, however, so we need say nothing more about
    this argument.
    - 22 -
    José cites Rosemond v. United States, 
    134 S. Ct. 1240
     (2014), in
    which the Supreme Court held that, to convict a defendant for
    aiding and abetting the knowing use of a firearm during and in
    relation to a drug trafficking crime under 
    18 U.S.C. § 924
    (c), the
    government must prove that the defendant had advance knowledge of
    each element of the offense (i.e., the drug part and the gun part).
    Id. at 1248-49.
    José did not request that the district court give the
    instructions he now claims it should have given.    To the contrary,
    he asked the court to give an instruction materially the same as
    that which it gave.   José therefore arguably waived this challenge
    to the jury instructions.   See United States v. Alberico, 
    559 F.3d 24
    , 27 (1st Cir. 2009).
    Even if José did not waive the argument, his failure to
    object would justify only plain error review, see Fed. R. Crim. P.
    30(d), 52(b), a standard José fails to satisfy.    See United States
    v. Duarte, 
    246 F.3d 56
    , 60 (1st Cir. 2001) ("Review for plain error
    entails four showings: (1) that an error occurred (2) which was
    clear or obvious and which not only (3) affected the defendant's
    substantial rights, but also (4) seriously impaired the fairness,
    integrity, or public reputation of judicial proceedings.").     The
    so-called element of which José says he needed prior knowledge--
    that the identifying information was initially obtained without
    lawful authority--is not actually an element of the offense.
    - 23 -
    Section 1028A punishes the knowing transfer, possession, or use
    without      lawful   authority       of    protected      information,   18    U.S.C.
    §   1028A(a)(1),      regardless       of    how    that   information    was    first
    obtained.      United States v. Ozuna-Cabrera, 
    663 F.3d 496
    , 499 (1st
    Cir. 2011) ("[R]egardless of how the means of identification is
    actually obtained, if its subsequent use breaks the law . . . it
    is violative of § 1028A(a)(1).").                  Even if an instructional error
    had occurred, it could not have affected José's substantial rights.
    The evidence overwhelmingly showed that José knew that he did not
    have the patients' consent to use their information to bill for
    surgical and medical procedures he never performed.
    2.    Typographical Error in an Instruction
    José   also    challenges       a    typographical    error     in    the
    aggravated      identity      theft    jury    charge.        The   district     court
    instructed the jury that the first element of aggravated identity
    theft was "that the defendants committed the crime of health care
    fraud    as    set    forth   in   jury      instruction      number   11."         This
    instruction should have cross-referenced jury instruction number
    12, listing the elements of health-care fraud, and not jury
    instruction number 11, which addressed vicarious liability for the
    acts and declarations of co-conspirators.                   There was no objection
    to this slip-up, and José concedes that review is for plain error
    only.        The mistake here falls far short of the "exceedingly
    difficult to satisfy" plain error standard for jury instructions.
    - 24 -
    United States v. Gonzalez-Velez, 
    466 F.3d 27
    , 35 (1st Cir. 2006).
    The district court's instruction correctly indicated that the
    predicate offense was health-care fraud, and it would have been
    obvious to the jury that the crime of health-care fraud was "set
    forth" in the instruction labeled as such, and not in the plainly
    inapplicable instruction titled "Acts and Declarations of Co-
    conspirators."     Moreover, given the weight and nature of the
    evidence against José, we doubt any confusion engendered by the
    typographical error contributed to the jury's verdict.
    3.   Success of the Conspiracy
    José next challenges the district court's refusal to
    instruct the jury that the government needed to prove the success
    of the conspiracy.    This refusal, José contends, resulted in both
    a   constructive    amendment   and    prejudicial   variance.   José
    acknowledges that the government ordinarily does not need to prove
    the success of a conspiracy.    See United States v. Paret-Ruiz, 
    567 F.3d 1
    , 6 (1st Cir. 2009).            According to José, though, the
    government committed itself to proving success by charging in the
    indictment that the object of the conspiracy was for the defendants
    to "enrich themselves."19
    No     constructive   amendment    occurred   here.    "[A]
    constructive amendment occurs where the crime charged has been
    19The "Object of the Conspiracy" section of the superseding
    indictment's conspiracy count read in relevant part: "The object
    - 25 -
    altered, either literally or in effect, after the grand jury last
    passed upon it."        United States v. Mubayyid, 
    658 F.3d 35
    , 49 (1st
    Cir. 2011) (internal quotation marks omitted). There was no change
    to the statutory elements of the offense.                See 
    id. at 51
     ("[O]ur
    practice has been to look to statutory elements in response to
    claims     by    defendants     that      'the   crime     charged'   has      been
    changed.").20
    Nor was there any variance between the charged crime and
    evidence at trial, let alone a variance that was prejudicial.                  See
    
    id. at 48
     ("A variance occurs when the facts proved at trial differ
    materially from those alleged in the indictment without altering
    the crime charged.").           While there was no evidence that Carlos
    made even a penny as a result of José's fraud, the government
    established      that    José   himself    billed   Medicare    for   more     than
    $3,500,000, and that Medicare paid him hundreds of thousands of
    dollars.        José    implausibly    responds     that   those   sums   do   not
    necessarily show enrichment without evidence of his "costs or
    of the conspiracy was that defendants . . . would unlawfully enrich
    themselves by submitting false and fraudulent claims to Medicare
    . . . ."
    20 José's reliance on United States v. Narog, 
    372 F.3d 1243
    (11th Cir. 2004), is beside the point. This case does not present
    a situation "where the government's failure to prove the crime as
    it was charged in the indictment opens the possibility that the
    jury convicted on the basis of conduct that was never charged."
    Mubayyid, 
    658 F.3d at
    53 n.24 (emphasis omitted) (distinguishing
    Narog).
    - 26 -
    overhead."     We think a jury could infer that José's costs were
    low, and certainly less than the amounts he received, given that
    he did not actually perform the procedures for which he billed
    Medicare.21
    IV.   Conclusion
    We vacate Carlos's convictions on all counts for lack of
    sufficient evidence, and remand for entry of judgment of acquittal.
    Finding no error with respect to José, we affirm his convictions.
    21We also reject José's last-ditch claim of cumulative error.
    Whatever errors that occurred with respect to José were at worst
    minor, and the evidence against him was overwhelming. See United
    States v. Sepulveda, 
    15 F.3d 1161
    , 1196 (1st Cir. 1993).
    - 27 -