RxDoctor Payments Data

Paul Sax, MD

Infectious Disease · Boston, MANPI 1306809892

Payments from drug & device makers

What this record shows

This record is dominated by consulting fees: $269,514 of the $319,544 with a category attached, or 84.3%. 9 manufacturers reported payments, led by Gilead at 44.8% of the total. Reporting peaked in 2019 at $95,032 and has fallen 70.5% since, to $27,994 in 2025. Among infectious disease clinicians in MA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.

$319,544in general payments, 2019–2025

Across 254 payments — averaging $1258.05 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • Gilead$143K
  • Viiv Healthcare Company$109K
  • Merck$41K
  • Janssen Scientific Affairs, LLC$11K
  • GSK$7K
  • Shionogi Inc$6K
  • plus $3K from 3 others
$209,238in research payments, 2019–2025

Across 82 payments — averaging $2551.68 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.

  • Gilead$141K
  • Viiv Healthcare Company$68K
  • Merck$225

What the payments were for

  • Royalty or licence$2620%
  • Consulting fees$269,51484%
  • Travel & lodging$43,28214%
  • Food & beverage$6,3882%
  • Education$990%

General payments by program year

19
20
21
22
23
24
25

Who reported the general payments

Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.

CompanyPaymentsTotal
Gilead121$143,058
Viiv Healthcare Company72$108,845
Merck33$40,941
Janssen Scientific Affairs, LLC15$11,343
GSK8$6,704
Shionogi Inc2$5,670
AbbVie1$2,025
Janssen Products, LP1$860
Insmed, Inc.1$99

What the payments were tied to

Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.

How this compares

$319,544 in reported general payments places this provider in the 95th percentile of 368 infectious disease providers in Massachusetts.

See all infectious disease providers in Massachusetts

Medicare billing

Part B allowed, 2024
$47,264
Medicare patients
165
Services billed
443

What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.

Most prescribed under Part D

DrugClaimsCost to plans & patients
BiktarvyBictegrav/Emtricit/Tenofov Ala193$833,437
OdefseyEmtricitab/Rilpiviri/Tenof Ala109$416,661
TivicayDolutegravir Sodium92$233,843
DovatoDolutegravir Sodium/Lamivudine63$192,190
DescovyEmtricitabine/Tenofov Alafenam54$137,020
RukobiaFostemsavir Tromethamine15$123,830
PifeltroDoravirine29$47,462
PrezcobixDarunavir/Cobicistat16$39,347
Efavirenz12$11,297
Emtricitabine12$2,694
Ethambutol Hcl11$435
Doxycycline Monohydrate12$338
Acyclovir19$308
Potassium Chloride12$80
Atorvastatin Calcium20$69

Paid to pharmacies, not to this prescriber.

Companies that both paid and supply prescribed drugs

These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.

CompanyPaid to this providerPart D cost of their drugs
GileadBiktarvy, Descovy$143,058$970,457247 claims
Viiv Healthcare CompanyTivicay, Dovato, Rukobia$108,845$549,863170 claims
MerckPifeltro$40,941$47,46229 claims

Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 95th percentile of 368 infectious disease providers in Massachusetts.

Other infectious disease in Boston

See the full list for Massachusetts

Where these figures come from

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