Court Opinion

ID: 4241152
Source: CourtListenerOpinion
Date Created: 2018-01-31 22:00:35.638417+00
Date Added: 2024-06-11T14:43:45.058926
License: Public Domain

Case: 14-14689   Date Filed: 01/31/2018   Page: 1 of 31

                                                       [DO NOT PUBLISH]

          IN THE UNITED STATES COURT OF APPEALS

                   FOR THE ELEVENTH CIRCUIT
                     ________________________

                           No. 14-14689
                     ________________________

               D.C. Docket No. 9:11-cr-80106-KAM-17

UNITED STATES OF AMERICA,

                                                             Plaintiff-Appellee,

                                versus

JOEL ANTONIO SIMON RAMIREZ,
                                                                    Defendant,

KENNETH KAROW,
HERMANN J. DIEHL,
HAL MARK KREITMAN,

                                                      Defendants-Appellants.

                     ________________________

              Appeal from the United States District Court
                  for the Southern District of Florida
                    ________________________

                          (January 31, 2018)
               Case: 14-14689        Date Filed: 01/31/2018      Page: 2 of 31

Before WILLIAM PRYOR, MARTIN, and BOGGS, ∗ Circuit Judges.

MARTIN, Circuit Judge:

       The opinion issued yesterday in this case is VACATED, and this one is

issued in its stead. The only change made is in Section VII of the opinion, related

to the restitution portion of Mr. Kreitman’s sentence.

       Kenneth Karow, Hermann Diehl, and Hal Kreitman appeal their convictions

and sentences imposed after a jury found them guilty of mail fraud; conspiracy to

commit mail fraud; money laundering; and conspiracy to commit money

laundering. After careful consideration, and with the benefit of oral argument, we

affirm Mr. Karow’s and Mr. Diehl’s convictions and sentences. We also affirm

Mr. Kreitman’s convictions but vacate his sentence and remand for further

proceedings.

                                    I. BACKGROUND

       Florida law requires all car insurance policies to include personal injury

(“PIP”) coverage. See Fla. Stat. § 627.730 et seq. Each car insurance policy has a

minimum of $10,000 of PIP coverage per person involved in an accident,

regardless of fault. See id. § 627.736(1). After the insured person has paid his co-

pay and deductible, the PIP coverage pays 80% of all reasonably necessary

medical expenses, subject to certain conditions. See id. § 627.736(1)(a).

       ∗
         Honorable Danny J. Boggs, United States Circuit Judge for the Sixth Circuit, sitting by
designation.
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      A group of friends from Pinar del Rio, Cuba, all living in South Florida,

wanted to take advantage of Florida’s PIP coverage. They opened several clinics

in South Florida, beginning in October 2006. These clinics intentionally

maximized patients’ medical expenses to the mandatory PIP coverage amount.

Patients were recruited for the scheme in two ways. Sometimes, the conspirators

found people who had been involved in legitimate car accidents. Other times, they

used recruiters who found people to stage accidents. The recruiters and the

participants in the staged accidents would get kickbacks for their work. The pay

varied, depending on how many passengers were in the staged accident, because

PIP coverage is per person. The pay also varied based on which insurance

company insured the participant, because certain companies paid out claims faster

and more easily than others. The average rate for recruiting two participants in an

accident was $4,500. The drivers in these “accidents” would agree in advance on

where and how to get in an accident. Sometimes they damaged the cars in

advance. For example, an informant for the FBI videotaped one of these stagings.

In this video, a recruiter used a sledgehammer on the participants’ cars in a parking

lot. Then, the participants drove onto the road, stopped their cars, and called the

police to report the “accident.”

      Regardless of whether a recruited participant was in a real or staged

accident, after the accident the recruit would go to one of the clinics in the scheme

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to become a patient. At the clinic, the participants were coached on what to say to

the clinic’s chiropractor and the insurance company. They would then see a

chiropractor who routinely prescribed 35 to 40 therapy sessions to cure their

injuries. This was just about the number of sessions needed to maximize the PIP

coverage of each patient. Patients also pre-signed a number of therapy session

forms so the clinic could bill claims for several sessions without actually seeing the

patient again. These “patients” were instructed to tell their insurance companies

that the clinic collected copays and deductibles that were never actually collected

and that each therapy session lasted over an hour, which they hadn’t.

      Mr. Karow, Mr. Diehl, and Mr. Kreitman were all chiropractors involved in

this scheme. Mr. Karow’s and Mr. Diehl’s roles in the scheme, however, grew in

light of some provisions of Florida law. Florida regulates health care clinics in the

state through the Florida Agency for Health Care Administration (“AHCA”). Fla.

Stat. § 400.9905. Generally, health care clinics are required to have a license from

the AHCA in order to bill insurance companies. The licensing process is quite

extensive, and requires inspections and background checks for the owner, medical

director, financial officer, all medical practitioners, and anyone who has contact

with clients or client funds. It also requires any “nonimmigrant aliens” with an

ownership interest in the clinic to file a surety bond of at least $500,000. Id.

§ 408.8065(2). This requirement for a license does not apply to health care clinics

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“wholly owned” by a licensed chiropractor. Id. § 400.9905(4)(g). These “wholly

owned” health care clinics can get a “certificate of exemption” from the AHCA.

      On October 1, 2007, Florida updated its PIP statutes. Compare Fla Stat.

§§ 627.736, 627.739 (2007), with id. §§ 627.736, 627.739 (2008). Among other

things, Florida law imposed a requirement that health care clinics be licensed

continuously for three years before they were allowed to bill insurance companies

for reimbursement under the PIP coverage. Id. § 627.736(1)(a). But the law again

provided for an exception for health care clinics “wholly owned” by a licensed

chiropractor. Id. Because of this legal framework under Florida law, the leaders of

the scheme looked for chiropractors to serve as “straw owners” for their clinics.

      Mr. Karow was the straw owner for Florida Therapy & Rehab Center,

Franco Chiropractor Center, and New York Medical & Rehab Center. He also

owned and operated his own clinic, the Karow Chiropractic Center. He allowed

two of the scheme’s leaders to run a “back clinic” out of the Karow Chiropractic

Center’s office space, but with a separate entrance, staff, and bank account. The

“back clinic” served primarily Spanish-speaking clients. Over time, the scheme’s

leaders became suspicious of Mr. Karow, fearing he was stealing money from the

back clinic’s reimbursements. For that reason, they closed the back clinic as well

as New York Medical & Rehab Center. They then opened Florida Mango

Massage Therapy Center in the same building where New York Medical had been

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and set up a new arrangement with Mr. Karow. They sent accident participants to

Mr. Karow at Karow Chiropractic Center to be prescribed therapy at Florida

Mango. Mr. Karow billed for the evaluation, and Florida Mango billed for the

prescribed therapies.

      Mr. Diehl was the straw owner for Febre’s Medical Center and 36

Rehabilitation Center. He signed a fraudulent bill of sale saying he paid $200 to

purchase Febre’s. The AHCA documentation for Febre’s, signed by Mr. Diehl,

said he was an “owner[] of a financial interest . . . and supervise[d] the business

activities and is legally responsible for . . . compliance with all federal and state

laws.” And he signed AHCA documentation for 36 Rehab with the same

language. In February 2009, Mr. Diehl signed another fraudulent bill of sale

saying he sold both Febre’s and 36 Rehabilitation to another codefendant who is

not part of this appeal.

      Mr. Kreitman was not a straw owner. He first worked as an independent

contractor for AllCare Consultants, which is a company that provides chiropractic

staffing and placement services. AllCare placed him at three clinics that played a

part in the scheme: Universal Rehabilitation, 36 Rehabilitation, and Elite

Rehabilitation. After some time, he also began working directly for the owner of

Progressive Rehabilitation, who was yet another codefendant in this scheme, but is

not part of this appeal.

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      After a 24-day trial, the jury convicted Mr. Karow and Mr. Kreitman on all

counts, and Mr. Diehl on all but one count. Mr. Karow was convicted of 1 count

of conspiracy to commit mail fraud, 48 counts of mail fraud, 1 count of conspiracy

to commit money laundering, and 11 counts of money laundering. He was

sentenced to 132-months imprisonment and 2 years of supervised release, and

ordered to pay $6,640,354.07 in restitution and an assessment of $6,100.

      Mr. Diehl was convicted of 1 count of conspiracy to commit mail fraud, 2

counts of mail fraud, 1 count of conspiracy to commit money laundering, and 3

counts of money laundering. He was sentenced to 108-months imprisonment and 2

years of supervised release, and ordered to pay $1,685,345.01 in restitution and an

assessment of $700.

      Mr. Kreitman was convicted of 1 count of conspiracy to commit mail fraud,

21 counts of mail fraud, 1 count of conspiracy to commit money laundering, and 2

counts of money laundering. He was sentenced to 96-months imprisonment and 2

years of supervised release, and ordered to pay $1,634,195.83 in restitution and an

assessment of $2,500.

                   II. SUFFICIENCY OF THE EVIDENCE

      All three defendants challenge the sufficiency of the evidence for their

convictions. “We review both a challenge to the sufficiency of the evidence and

the denial of a Rule 29 motion for judgment of acquittal de novo.” United States v.

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Chafin, 808 F.3d 1263, 1268 (11th Cir. 2015) (quotation omitted). “We examine

the evidence in the light most favorable to the government and resolve all

reasonable inferences and credibility issues in favor of the guilty verdicts.” Id.

(quotation omitted and alteration adopted). This Court will not overturn a guilty

verdict nor disturb the denial of a Rule 29 motion unless no reasonable trier of fact

could find guilt beyond a reasonable doubt. Id.

A. MAIL FRAUD

      To prove a conspiracy to commit mail fraud under 18 U.S.C. § 1349, the

government must prove beyond a reasonable doubt “(1) that a conspiracy [to

commit mail fraud] existed; (2) that the defendant knew of it; and (3) that the

defendant, with knowledge, voluntarily joined it.” United States v. Vernon, 723

F.3d 1234, 1273 (11th Cir. 2013) (quotation omitted). For the substantive mail

fraud charges under 18 U.S.C. § 1341, the government must prove beyond a

reasonable doubt: “(1) an intentional participation in a scheme to defraud a person

of money or property, and (2) the use of the mails in furtherance of the scheme.”

United States v. Hill, 643 F.3d 807, 858 (11th Cir. 2011) (quotation omitted).

      All three defendants challenge the knowledge and intent elements of their

mail fraud and conspiracy to commit mail fraud convictions. Mr. Karow says “he

was an honest doctor” and that the only witness who directly linked him to the

conspiracy was one of his patients, Wilfredo Sauceda. Mr. Sauceda testified that

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Mr. Karow told him where his pain was located, and that he had been told that Mr.

Karow was in on the conspiracy. Mr. Karow argues that Mr. Sauceda’s testimony

alone was not enough to find him guilty of conspiracy to commit mail fraud. But

Mr. Sauceda’s testimony was not the only evidence the government presented

against Mr. Karow. Among other things, the government presented evidence that

Mr. Karow signed examination forms and prescribed therapies for patients he

never saw. A massage therapist who worked for Mr. Karow testified that Mr.

Karow gave him $6,000 to pay recruited patients. And his secretary participated in

two staged accidents and performed patient examinations that Mr. Karow later

signed as having performed himself. Under this Court’s precedent, knowledge of a

conspiracy as well as intent to commit mail fraud can be inferred from

circumstantial evidence of a scheme and the defendant’s conduct. United States v.

Bradley, 644 F.3d 1213, 1239 (11th Cir. 2011); United States v. Molina, 443 F.3d

824, 828 (11th Cir. 2006). On this record, we cannot say “no reasonable trier of

fact could find guilt beyond a reasonable doubt.” Chafin, 808 F.3d at 1268

(quotation omitted).

      Mr. Diehl says he was an unwitting participant in this scheme. He argues

that his patient files show, contrary to the government’s assertions, that he did not

order standard courses of treatments for patients that were designed to maximize

PIP payments. Nevertheless, the government presented evidence that Mr. Diehl

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admitted to an FBI agent that he had filled out therapy prescriptions designed to

“max [the PIP],” backdated forms, and routinely saw patients for only five

minutes. Mr. Diehl also admitted to the agent that prescribing approximately 28 to

36 therapy sessions was “standard protocol” and that “he considered [backdating]

to be fraud.” Mr. Diehl said “he felt it was obvious that patients were just signing

for therapy and were not receiving [it]” and knew “there was no way the clinic

could handle the volume of therapies that were being prescribed.” Although Mr.

Diehl disputes the testimony of the FBI agent about his statements, the jury was

free to make its own credibility determinations and draw reasonable conclusions

from the evidence presented. United States v. Garcia, 447 F.3d 1327, 1334 (11th

Cir. 2006). On this record, we cannot say “no reasonable trier of fact” could

conclude Mr. Diehl knew about the conspiracy and intentionally participated in the

scheme. See Chafin, 808 F.3d at 1268 (quotation omitted).1

       Mr. Kreitman also says he was an unknowing participant. He claims that he

worked at the fake clinics only because he was assigned to them by AllCare, and

that he never actually knew a conspiracy was going on. He also argues that while

any forms he signed without seeing patients, the similarities in treatment plans, and

his statements to law enforcement agents may be suspicious, such evidence fails to

       1
         Because we affirm on this theory of the government’s case, we need not and do not
address Mr. Diehl’s argument about the government’s alternative theory of the case, that his
convictions cannot stand because the Florida statutes the government alleged he violated are
constitutionally void for vagueness or should be interpreted using the rule of lenity.
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show that he knowingly participated in the conspiracy. But again, the government

presented additional evidence that would allow a reasonable factfinder to conclude

otherwise. The jury was shown photographs of Mr. Kreitman going into Elite

Rehab and leaving after one hour and ten minutes. One-half hour after he left, a

patient went in. Despite Mr. Kreitman and the patient not being there at the same

time, Mr. Kreitman signed an examination form and prescribed treatment for the

patient that was billed to AllState. Mr. Kreitman also admitted to an FBI agent that

he thought patients were being coached and paid. He told the agent that he

followed a “standard prescription” for all patients aimed at “trying to maximize the

$10,000 PIP limit.” He described things to the agent as “not on the up and up.”

On this record, we cannot say “no reasonable trier of fact” could conclude Mr.

Kreitman knew of and intentionally participated in the scheme. See Chafin, 808

F.3d at 1268 (quotation omitted).

      The evidence was sufficient to support a jury finding that all three

defendants had knowledge of the mail fraud conspiracy and intentionally

participated in both it and the substantive mail fraud scheme. And the government

presented evidence that claim documentation in the conspiracy was frequently sent

to insurance providers through the U.S. mail. Our precedent provides that “[p]roof

of a routine practice of using the mail to accomplish a business end is sufficient to

support a jury’s determination that mailing occurred in a particular instance.”

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United States v. Waymer, 55 F.3d 564, 571 (11th Cir. 1995). Viewing the

evidence in the light most favorable to the government, we affirm the mail fraud

and conspiracy to commit mail fraud convictions of all three defendants.

B. MONEY LAUNDERING

      To prove a conspiracy to commit money laundering under 18 U.S.C.

§ 1956(h), the government must prove: “(1) agreement between two or more

persons to commit a money-laundering offense; and (2) knowing and voluntary

participation in that agreement by the defendant.” United States v. Broughton, 689

F.3d 1260, 1280 (11th Cir. 2012). The underlying money laundering offenses

were charged in violation of 18 U.S.C. §§ 1956(a)(1)(A)(i), 1956(a)(1)(B)(i), and

1956(a)(1)(B)(ii). To prove money laundering, the government must show the

defendant (1) engaged in a financial transaction that (2) he knew involved funds

that were the proceeds of some unlawful activity, and (3) those funds were in fact

the proceeds of that unlawful activity. See 18 U.S.C. § 1956(a). Here, the

unlawful activity is mail fraud. In addition to these three requirements, the

government is required to show either: (1) the defendant intended to promote the

carrying on of the unlawful activity, see id. § 1956(a)(1)(A)(i); (2) the defendant

knew the transaction was designed to conceal the nature of the proceeds of the

unlawful activity, see id. § 1956(a)(1)(B)(i); or (3) the defendant knew the

transaction was designed to avoid a state or federal reporting requirement, see id.

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§ 1956(a)(1)(B)(ii). These three types of money laundering are called promotion

money laundering, concealment money laundering, and structuring transactions,

respectively.

      The evidence was sufficient to support a jury finding that all three

defendants conspired to commit money laundering. In United States v. Azmat, 805

F.3d 1018 (11th Cir. 2015), we upheld a conviction for conspiracy to commit

promotion money laundering under facts similar to those offered at trial here. In

that case involving a “pill mill” scheme, we concluded that trial testimony

permitted the jury to infer that Azmat’s codefendants agreed to dispense controlled

substances for cash, which was then used to support further activities of the “pill

mill.” Id. at 1037–38. We also concluded that sufficient evidence had been

presented for the jury to find that Azmat had knowingly and voluntarily

participated in that agreement. Azmat knew patients paid the clinic in cash and

received his salary in cash. Although Azmat “may not have been aware of all of

the uses of the clinic’s proceeds, it was reasonable for the jury to infer that he knew

that the cash was used to pay salaries and cover the clinic’s operating costs.” Id. at

1038. We also found it reasonable for the jury to conclude that, because Azmat

had already agreed “to dispense medications outside the course of his usual

professional practice[,] . . . and by continuing to work and generate profits, Dr.

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Azmat had knowingly joined a conspiracy to launder money, in which illegal

proceeds were used to ‘promote’ [the clinic]’s drug-dispensing activities.” Id.

      As in Azmat, the evidence introduced in the District Court would permit a

jury to determine that various individuals at the center of the conspiracy, including

Luis Ivan Hernandez, Maria Testa, Lazaro Vigoa Mauri, and Vladimir Lopez,

agreed to submit fraudulent insurance reimbursement claims and use that money to

pay the participants in the scheme, fund clinics, and pay the salaries of the

employees at the clinics where the chiropractors worked. The trial evidence was

also sufficient to permit a jury to find that Mr. Karow, Mr. Diehl, and Mr.

Kreitman knew that their salaries, as well as the expenses of the clinics, were

funded with the fraudulent insurance proceeds. Because all three codefendants

continued to work and generate profits knowing that fraudulent insurance proceeds

were being used to pay their salaries and clinic expenses, the jury could determine

that all three had joined the conspiracy to commit money laundering. See id.

      Because the evidence was sufficient to establish that the chiropractors

participated in a conspiracy to commit promotion money laundering, the jury could

also find the chiropractors guilty of all of the substantive counts of money

laundering under the rule of coconspirator liability established by Pinkerton v.

United States, 328 U.S. 640, 66 S. Ct. 1180 (1946). “Under Pinkerton, each

member of a conspiracy is criminally liable for any crime committed by a

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coconspirator during the course and in furtherance of the conspiracy, unless the

crime did not fall within the scope of the unlawful project, or was merely a part of

the ramifications of the plan which could not be reasonably foreseen as a necessary

or natural consequence of the unlawful agreement.” United States v. Alvarez, 755

F.2d 830, 847 (11th Cir. 1985) (quotation omitted). In other words, a

coconspirator is liable for “all of the acts and foreseeable consequences of the

conspiracy.” United States v. Silvestri, 409 F.3d 1311, 1335 (11th Cir. 2005)

(emphasis and quotation omitted). This doctrine “has been applied to money

laundering conspiracy cases; a defendant who joins a money laundering conspiracy

may be found substantively liable for money laundering offenses committed by co-

conspirators.” Id. at 1336.

      Under this theory, the evidence was sufficient to support a jury verdict for

the substantive money laundering counts involving paychecks written to Mr.

Karow, Mr. Diehl, and Mr. Kreitman. Evidence was introduced to establish that

the leaders of the conspiracy wrote the paychecks to ensure the chiropractors

would continue to serve as “owners” of the clinic, show up to work, and write

fraudulent prescriptions. Such payments were within the scope of the conspiracy

to commit money laundering because they paid the expenses of the clinics,

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including the salaries of the employees, and thus, were designed to promote the

carrying on of the mail fraud scheme. 2

       We also affirm the substantive money laundering counts that did not involve

paychecks to the three codefendants. Mr. Karow’s conviction for count 112

involved a check payable to Dagoberto Milian drawn on the New York Medical

checking account, signed by Vladimir Lopez. Evidence established that Mr.

Milian was a recruiter paid to bring in patients to the clinics and that he staged

accidents and participated in an accident himself. From this evidence, a reasonable

factfinder could infer that Mr. Milian was paid for his participation in the

conspiracy, with the intent to encourage him to continue participating in it and to

bring more patients into the clinics. Such a payment would be within the scope of

the conspiracy to commit promotion money laundering.

       2
          We asked for supplemental briefing on the question of whether there was sufficient
evidence to support the convictions for counts 80–83 in light of the Supreme Court’s decision in
United States v. Santos, 553 U.S. 507, 128 S. Ct. 2020 (2008). In that case, a plurality of the
Supreme Court held that “proceeds” in the money laundering statute should be read to mean
“profits” not “receipts.” Id. at 514, 128 S. Ct. at 2025. Applying this definition would mean that
the payment of salaries and other essential expenses would not be sufficient to support a
conviction for money laundering. The year after Santos was decided, Congress amended the
money laundering statute to define “proceeds” as “gross receipts,” effectively superseding the
interpretation in Santos. Fraud Enforcement and Recovery Act of 2009, Pub. L. No. 111-21, § 2,
123 Stat. 1617, 1618 (codified at 18 U.S.C. § 1956(c)(9)). Counts 80–83 were based on conduct
that occurred between when Santos was decided and when the statute was amended. However,
prior panels of this Court have held that the narrower definition of “proceeds” set out in Santos
should only be applied to conduct relating to unlicensed gambling operations that took place
between when Santos was issued and the statute was amended. See United States v. Jennings,
599 F.3d 1241, 1252 (11th Cir. 2010); United States v. Demarest, 570 F.3d 1232, 1242 (11th Cir.
2009). Because our prior precedent requires us to confine Santos to the unlicensed gambling
context, we apply the broader definition of “proceeds” to this case, which includes the payment
of salaries. We therefore affirm counts 80–83 under the logic set out above.
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      The evidence was also sufficient to support Mr. Karow’s convictions on

counts 87 and 96. Both counts involved checks for $9,000, payable to Maykel

Marquez, Vladimir Lopez’s brother in law. Count 87 involved a check drawn on

the New York Medical account, and count 96 involved a check drawn on the

account for the “back clinic” at Karow Chiropractic Center. Mr. Karow was a

signatory on both accounts but did not sign either check. Testimony established

that Mr. Marquez would cash checks for Mr. Lopez, and that the check that formed

the basis of count 87 was a check cashed on behalf of Mr. Lopez. Testimony also

established that at least once Mr. Marquez was paid for his participation in a staged

accident, but that the check in count 87 was not related to that activity. Both Mr.

Marquez and Mr. Lopez were involved in the underlying conspiracy, and sufficient

evidence was presented to allow the jury to find that the payments were made to

compensate either or both of them for their participation in the scheme and to

encourage them to continue participating. Because Mr. Karow is liable for all of

the acts and foreseeable consequences of the conspiracy, there was sufficient

evidence to support his convictions under these counts. Silvestri, 409 F.3d at 1335.

We therefore affirm the codefendants’ convictions on all of the money laundering

counts.

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                          III. JURY INSTRUCTIONS

      We review for an abuse of discretion the District Court’s refusal to give a

requested jury instruction. United States v. Tokars, 95 F.3d 1520, 1531 (11th Cir.

1996). This Court will reverse a conviction for the failure to give a requested jury

instruction only where the instruction: “(1) was correct, (2) was not substantially

covered by a charge actually given, and (3) dealt with some point in the trial so

important that failure to give the requested instruction seriously impaired the

defendant’s ability to conduct his defense.” United States v. Dohan, 508 F.3d 989,

993 (11th Cir. 2007) (per curiam) (quotation omitted).

      Three of Mr. Karow’s requested jury instructions were refused by the

District Court. The first was a “theory of defense” instruction. Mr. Karow’s

proposed instruction on his theory of defense emphasized the requirements that the

jury find “he knowingly and voluntarily participated in fraudulent conduct.” His

proffered instruction also said that “being a bad business manager” or “being a

joint signatory on a bank account” could not alone support the charges. Although

the District Court did not give Mr. Karow’s requested charge verbatim, it included

several instructions that expressly required the jury to find knowledge and

voluntary participation. We agree with the District Court that these other

instructions substantially covered Mr. Karow’s requested instruction.

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      Mr. Karow’s second requested instruction was a modified pattern instruction

about the “spillover effect” of codefendants’ statements. Mr. Karow asked the

District Court to add a clause to the standard Eleventh Circuit jury instruction. Mr.

Karow asked that the court say: “Any such [codefendant] statement is not evidence

about any other Defendant and cannot be used by you to infer knowledge or intent

of any other Defendant.” The District Court instead said: “Any such statement is

not evidence about any other defendant.” We conclude that the given instruction

substantially covered Mr. Karow’s proposed instruction here as well.

      Mr. Karow’s third request was for a “failure to record interviews”

instruction. This instruction pointed out that the FBI testimony about Mr. Karow’s

statements was based on the FBI agents’ recollections, as it is FBI policy not to

record interviews. The requested instruction told the jury to be cautious with this

testimony as a result of this failure to record. The District Court instead instructed

the jury to consider all the evidence cautiously, including “the circumstances under

which it was made.” We are aware of no legal requirement, nor has Mr. Karow

shown us one, that the FBI must record its interviews. Rather, it is the role of the

jury to weigh the credibility of witnesses on the basis of their testimony. The

District Court’s instruction substantially covered Mr. Karow’s requested

instruction. And in any event, we conclude the failure to give Mr. Karow’s

requested instruction did not seriously impair his ability to conduct his defense.

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The District Court did not abuse its discretion with regard to these jury charges.

See Tokars, 95 F.3d at 1531.

                          IV. EVIDENTIARY CHALLENGE

      We review for an abuse of discretion the District Court’s decision to admit

evidence under Federal Rule of Evidence 404(b). United States v. Phaknikone,

605 F.3d 1099, 1107 (11th Cir. 2010). Whether the District Court abused its

discretion in admitting evidence of a prior bad act under Rule 404(b) is evaluated

with a three-part test:

      First, the evidence must be relevant to an issue other than the
      defendant’s character. Second, as part of the relevance analysis, there
      must be sufficient proof so that a jury could find that the defendant
      committed the extrinsic act. Third, the probative value of the evidence
      must not be substantially outweighed by its undue prejudice, and the
      evidence must meet the other requirements of Rule 403.

Id. (quotations and citations omitted). Rule 404(b) allows evidence of a

defendant’s prior bad acts to show “motive, opportunity, intent, preparation, plan,

knowledge, identity, absence of mistake, or lack of accident.” Fed. R. Evid.

404(b)(2).

      Mr. Diehl challenges the testimony of one of the government’s witnesses,

Yoandra Marrero. Over Mr. Diehl’s objection, Ms. Marrero testified about Christ

Medical, a clinic she owned that was not named in the indictment. In addition to

the clinics in this case, Mr. Diehl also worked at Christ Medical. Christ Medical

employed an insurance fraud scheme similar to the one in this case, where patients
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visited the clinic only a handful of times, but insurance companies were billed for

many more visits. The government introduced evidence that Mr. Diehl worked at

Christ Medical and told Ms. Marrero he would pay her $1,000 for each clinic she

referred him to. Ms. Marrero said she referred Mr. Diehl to several clinics. She

also testified that she taught Mr. Diehl how to run insurance fraud schemes.

Specifically, she told him how to schedule billing to minimize the chance of

investigation and to list injuries to the extremities to maximize the rate at which

PIP would be exhausted. At Mr. Diehl’s request, however, the District Court did

read a limiting instruction about this testimony.

      Mr. Diehl argues this testimony was not relevant to this case and

inadmissible under Rule 404(b). But applying our test from Phaknikone, we

conclude that the District Court did not abuse its discretion. First, this evidence

was relevant to an issue other than Mr. Diehl’s character: his intent and knowledge.

See Phaknikone, 605 F.3d at 1107; see also Fed. R. Evid. 404(b)(2). Indeed as we

have discussed, the government was required to prove knowledge and intent for all

of his charged offenses. Second, although Mr. Diehl concedes that witness

testimony can be sufficient to show the existence of a prior act, he disputes that the

record evidence does so. However, we conclude that Ms. Marrero’s testimony was

itself sufficient proof that Mr. Diehl committed the “extrinsic acts.” Third, the

probative value of this evidence outweighed any “undue prejudice.” See

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Phaknikone, 605 F.3d at 1107 (quotation omitted). Mr. Diehl’s knowledge and

intent were key issues at trial, and this evidence spoke to those issues. The proof

this testimony offered outweighed any “undue” prejudice to Mr. Diehl from the

jury learning he had been involved in a similar scheme before. Considering the

“overall similarity between the extrinsic act and the charged offense,” as well as

the District Court’s limiting instruction, we cannot say the District Court abused its

discretion. See United States v. Jernigan, 341 F.3d 1273, 1282 (11th Cir. 2003)

(quotation omitted).

                          V. MOTION TO SUPPRESS

      The District Court’s denial of a motion to suppress involves mixed questions

of fact and law. We review de novo the District Court’s legal conclusions and its

findings of fact for clear error. United States v. Hollis, 780 F.3d 1064, 1068 (11th

Cir. 2015). We review the entire record in the light most favorable to the

prevailing party. Id. The voluntariness of a confession is a question of law, so it is

subject to de novo review. Hubbard v. Haley, 317 F.3d 1245, 1252 (11th Cir.

2003). We evaluate voluntariness under the totality of the circumstances. Id.

      Mr. Kreitman argues the District Court erred when it denied his motion to

suppress statements he made to federal agents. He says the circumstances under

which he made his statements rendered them involuntary. In 2005 and 2011, Mr.

Kreitman worked as a cooperating witness for the FBI in investigations into

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steroids and MDMA. Mr. Kreitman was not granted immunity for his assistance in

these investigations. But neither was he charged with any crime as a result of the

investigations and, in fact, the DEA paid him for his help. While working with the

FBI in 2011, Mr. Kreitman said he was interested in assisting the FBI with health

care fraud investigations. In 2013, FBI agents contacted Mr. Kreitman about this

case. They set up a meeting where he told them about his involvement in the

clinics. The FBI then set up a second meeting, during which Mr. Kreitman

requested immunity and, to his surprise, was denied. Mr. Kreitman argues his

previous work with the government led him to believe he would not be prosecuted

for assisting with this case. In other words, he argues the FBI made him an

“implied promise.”

      A confession is voluntary if “it is the product of the defendant’s free and

rational choice.” Harris v. Dugger, 874 F.2d 756, 761 (11th Cir. 1989). It may

“not be extracted by any sort of threats or violence, or obtained by any direct or

implied promises, or by the exertion of any improper influence.” Id. We have said

that “even a mild promise of leniency” can “undermine[] the voluntariness of a

confession.” United States v. Lall, 607 F.3d 1277, 1285 (11th Cir. 2010)

(quotation omitted). Our review of the record, however, shows no promises or

assurances were made to Mr. Kreitman that he would not be prosecuted. He

acknowledges as much. Neither does our review of the record show any “implied”

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promises. Had the FBI agents explicitly lied to Mr. Kreitman, misrepresented their

authority, or given any indication (however slight) that he was safe from

prosecution, then the result here might be different. But on this record, we agree

with the District Court that, based on the totality of the circumstances, Mr.

Kreitman’s statements were voluntary.

                      VI. GUIDELINES CALCULATIONS

        We review de novo the District Court’s interpretation and application of the

Sentencing Guidelines but accept the court’s factual findings unless they are

clearly erroneous. United States v. Ford, 784 F.3d 1386, 1396 (11th Cir. 2015).

Mr. Kreitman challenges the procedural reasonableness of three of the District

Court’s determinations in calculating his guidelines range. We address each in

turn.

A. LOSS AND NUMBER OF VICTIMS

        Mr. Kreitman first argues the District Court miscalculated the amount of loss

and number of victims under the United States Sentencing Guidelines

§ 2B1.1(b)(1) and (2). The District Court “needs only to make a reasonable

estimate of the loss amount . . . . because often the amount of loss caused by fraud

is difficult to determine accurately.” United States v. Medina, 485 F.3d 1291,

1304 (11th Cir. 2007) (quotation omitted). Estimates are permissible, but they

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cannot be overly speculative. Id. “The amount of loss must be proven by a

preponderance of the evidence, and the burden must be satisfied with reliable and

specific evidence.” Id. (quotation omitted).

      At sentencing, the government sought to hold Mr. Kreitman responsible for

$2,333,172.15 in loss. The District Court found Mr. Kreitman responsible for a

$1,634,195.83 loss to 30 victim insurance companies. Mr. Kreitman objected to

this loss amount. While he conceded that it reflected the proceeds the clinics got

from insurance companies, he argued that it did not accurately reflect his conduct

because he was not the only chiropractor at the clinics. On appeal, Mr. Kreitman

raises this same argument and says he should be held responsible for much less

than this figure because he worked at the clinics only part time and other

chiropractors were responsible for substantial portions of the loss amount. In

particular, Mr. Kreitman argues that the District Court failed to make factual

findings “that misconduct on the part of other chiropractors was reasonably

foreseeable to Kreitman,” as it was required to under USSG § 1B1.3(a)(1)(B).

      The District Court based its calculation of the loss amount and number of

victims on the testimony of a federal agent who examined clinic bank accounts and

PIP claim reimbursement information from insurance companies. The agent

presented spreadsheets showing the PIP claims for each insurance company. At

Mr. Kreitman’s request, the same agent produced a special calculation representing

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the loss amount specifically for the time frame he worked at those clinics. The

agent acknowledged it was not possible to determine which chiropractor’s

submission resulted in each PIP payment. The District Court determined this was

sufficient to establish Mr. Kreitman’s loss amount because “[a]s a member of a

conspiracy he is held accountable for all of the loss that was generated during the

course of the conspiracy. So it’s all relevant conduct that is attributable to him.”

      This was an incorrect statement of the law. The Sentencing Guidelines

provide that a defendant is only responsible for “all reasonably foreseeable acts

and omissions of others in furtherance of the jointly undertaken criminal activity.”

USSG § 1B1.3(a)(1)(B) (2013). The Application Notes further state that

“[b]ecause a count may be worded broadly,” the jointly undertaken criminal

activity can be narrower than the scope of the entire conspiracy. Id. § 1B1.3, cmt.

n.2. In 2015, the Sentencing Commission amended Section 1B1.3 to state that a

defendant is responsible for all acts and omissions of others that were “(i) within

the scope of the jointly undertaken criminal activity, (ii) in furtherance of that

criminal activity, and (iii) reasonably foreseeable in connection with that criminal

activity.” USSG § 1B1.3(a)(1)(B) (2015). Because this amendment was

clarifying, it applies retroactively to Mr. Kreitman’s sentence. See United States v.

Presendieu, No. 15-14830, slip op. at *14 (11th Cir. Jan. 19, 2018). As a result,

when determining Mr. Kreitman’s accountability for the conduct of others, the

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District Court should have (1) made “individualized findings concerning the scope

of criminal activity undertaken by [the] defendant” and (2) “determine[d]

reasonable foreseeability.” United States v. Hunter, 323 F.3d 1314, 1319 (11th

Cir. 2003) (quotation omitted).

      Here, the District Court did not make individualized findings on the scope of

criminal activity undertaken by Mr. Kreitman, or whether the actions of the other

chiropractors were reasonably foreseeable acts taken “in furtherance of the jointly

undertaken criminal activity.” See USSG § 1B1.3(a)(1)(B). Instead, the District

Court attributed a loss amount and number of victims to Mr. Kreitman merely

based on his participation in the conspiracy. This was clear error. We therefore

vacate Mr. Kreitman’s sentence and remand for the District Court to make

individualized factual findings in calculating the loss amount and number of

victims attributable to Mr. Kreitman.

B. ABUSE OF A POSITION OF TRUST OR USE OF A SPECIAL SKILL

      Mr. Kreitman next argues the District Court erred by finding he abused a

position of trust or used a special skill under USSG § 3B1.3. We agree that Mr.

Kreitman’s conduct did not rise to an “abuse of trust.” See United States v.

Ghertler, 605 F.3d 1256, 1264 (11th Cir. 2010) (explaining that in the fraud

context, this enhancement applies “where the defendant is in a fiduciary, or other

personal trust, relationship to the victim of the fraud, and the defendant takes

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advantage of this relationship to perpetuate or conceal the offense” (quotation

omitted)). In Ghertler, we said sentencing courts must be careful not to be “overly

broad” in applying this enhancement because all fraud involves some abuse of

trust. Id. (quotation omitted). Thus, we concluded, “there must be a showing that

the victim placed a special trust in the defendant beyond ordinary reliance on the

defendant’s integrity and honesty that underlies every fraud scenario.” Id.

(quotation omitted). In Mr. Kreitman’s case, there was no showing made by the

government that Mr. Kreitman stood in a fiduciary relationship to the victim

insurance companies or that they placed special trust in him. In this case, “there is

no basis for concluding that he is ‘more culpable’ than any common fraudster.” Id.

at 1267.

      On the other hand, Mr. Kreitman did use a special skill. The Guidelines

define a “special skill” as “a skill not possessed by members of the general public

and usually requiring substantial education, training or licensing.” USSG § 3B1.3

cmt. n.4. Mr. Kreitman does not contest that being a licensed chiropractor

qualifies him as possessing a “special skill.” Instead, he says that § 3B1.3 requires

he “used a special skill.” Id. § 3B1.3 (emphasis added). Mr. Kreitman points out

that the government’s position was that he often did not examine patients and that

when he did, he did so only in a perfunctory manner. He asks us to adopt the

approach used by the Sixth Circuit in United States v. Weinstock, 153 F.3d 272

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(6th Cir. 1998), and to differentiate between his status as a chiropractor and using

his skills as one. Id. at 281. To the contrary, the government asks us to adopt the

Third Circuit’s approach from United States v. Tai, 750 F.3d 309 (3d Cir. 2014),

which views the use of a special skill as including any action that requires the

“skill and credentials [as] the means by which [a defendant] could participate.” Id.

at 318.

      We adopt the Sixth Circuit’s approach to interpreting USSG § 3B1.3. Our

reading of the word “use” does not by its plain language include refraining from

the use of one’s skills. See, e.g., Black’s Law Dictionary 1775 (10th ed. 2014)

(defining “use” as “[t]he application or employment of something”). But under

either definition, the record shows that Mr. Kreitman did indeed use his skills as a

licensed chiropractor. Mr. Kreitman admits he examined at least some patients and

prescribed them therapies. This necessarily required him to apply and employ his

skills, even if he was prescribing unnecessary therapies. We therefore affirm the

District Court on this issue.

C. SOPHISTICATED MEANS

      Mr. Kreitman last argues the District Court improperly applied an

enhancement based on sophisticated means under USSG § 2B1.1(b)(10)(C). The

Guidelines define “sophisticated means” as “especially complex or especially

intricate offense conduct pertaining to the execution or concealment of an offense.”

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Id. § 2B1.1 cmt. n.9(B). Also, “[t]here is no requirement that each of a defendant’s

individual actions be sophisticated in order to impose the enhancement. Rather, it

is sufficient if the totality of the scheme was sophisticated.” Ghertler, 605 F.3d at

1267.

        Mr. Kreitman argues that the enhancement is inapplicable because he did not

use sophisticated means and because the use of sophisticated means by others was

not reasonably foreseeable. We disagree. The scheme in this case involved a large

number of defendants operating a network of clinics. It included staging accidents;

recruiting patients; training patients; setting treatment schedules aimed at

maximizing benefits; completing extensive paperwork; and billing a large number

of insurance claims. It is hardly plausible for Mr. Kreitman to say that the

sophisticated means used by his co-conspirators were unforeseeable. On this

record, we agree with the District Court that this enhancement was appropriate.

                                VII. RESTITUTION

        We review de novo the legality of a restitution order. United States v. Foley,

508 F.3d 627, 632 (11th Cir. 2007). We review for clear error the District Court’s

factual findings about the specific amount of restitution. Id.

        Mr. Kreitman makes the same argument here as he did in his challenge to

the District Court’s calculation of the loss amount for which he was responsible

under the Guidelines. A restitution order can hold a defendant responsible for the

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losses caused by the “reasonably foreseeable acts of others committed in

furtherance of the conspiracy.” United States v. Odom, 252 F.3d 1289, 1299 (11th

Cir. 2001). Because we vacated Mr. Kreitman’s sentence in order to allow the

District Court to reconsider the loss amount, we recognize that the District Court

may wish to reconsider the restitution amount as well.

                              VIII. CONCLUSION

      We affirm Mr. Karow’s and Mr. Diehl’s convictions and sentences for mail

fraud, conspiracy to commit mail fraud, money laundering, and conspiracy to

commit money laundering. We affirm Mr. Kreitman’s convictions but vacate his

sentence and remand for further proceedings.

      AFFIRMED IN PART, VACATED AND REMANDED IN PART.

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