Physician profile

Robert A Zajac

Infectious Disease · San Antonio, TX

NPI 1013907963

$9,689.42

in general payments reported to CMS, 2019-2025

32 companies · $439 in 2025

The $439 reported for 2025 was more than what a typical Infectious Disease provider received nationally (typical 2025 total: $187).

See the full distribution for Infectious Disease

Payments by year

General payments by program year, as reported to CMS.

What the payments were for

Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.

View as a table
Payment typeAmount (2023-2025)
Food and Beverage$1,516.50
Education$26.00

Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.

Who reported paying

General payments only, as reported to CMS. Product names cover 2023-2025.

CompanyGeneral paymentsYearsTop products
Cipla USA INC. $2,041.35 2020-2021
Viiv Healthcare Company $1,812.77 2019-2025 Dovato, Cabenuva, Rukobia
Gilead Sciences, INC. $1,133.20 2019-2025
Merck Sharp & Dohme LLC $726.25 2019-2023 Dificid, Delstrigo
Abbvie INC. $725.75 2021-2025 Teflaro, Avycaz, Dalvance
Janssen Biotech, INC. $526.83 2019-2023 Symtuza
Allergan, INC. $514.54 2019-2020
Grifols USA, LLC $337.64 2019-2024 Gamunex-C
Paratek Pharmaceuticals, INC. $239.96 2019-2025 Nuzyra
Theratechnologies INC. $233.77 2019-2023 Trogarzo, Egrifta
Insmed, INC. $193.31 2020-2025 Arikayce
Octapharma USA, INC. $110.10 2021-2025 Panzyga, Octagam Immune Globulin (Human)
Ferring Pharmaceuticals INC. $98.75 2023 Rebyota
Shionogi INC $95.45 2020-2024 Fetroja
Cumberland Pharmaceuticals, INC. $91.04 2019-2020
Show all 32 companies
CompanyGeneral paymentsYearsTop products
Takeda Pharmaceuticals U.S.A., INC. $82.23 2021
Aimmune Therapeutics, INC. $79.26 2024-2025 Vowst
Pfizer INC. $75.09 2020-2023
Csl Behring $66.09 2020-2021
Napo Pharmaceuticals INC $65.81 2019
Emd Serono, INC. $62.48 2020-2021
Melinta Therapeutics, LLC $61.04 2019-2020
Mayne Pharma Commercial LLC $58.49 2019
La Jolla Pharmaceutical Company $42.64 2020-2021
Adma Biomanufacturing LLC $42.24 2021
Vyera Pharmaceuticals, LLC $36.57 2019-2020
Tetraphase Pharmaceuticals, INC. $33.38 2019
Shire North American Group INC $28.12 2019
Pharming Healthcare, INC. $26.00 2024
Smith+Nephew, INC. $19.69 2020
Antares Pharma, INC. $15.67 2019
Aytu Biopharma, INC. $13.91 2020

Drugs and devices associated with these payments

CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.

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Payment summary

Robert A Zajac

$9,689.42

in general payments reported 2019-2025

Years
2019-2025
Top company
Cipla USA INC.
Context
The $439 reported for 2025 was more than what a typical Infectious Disease provider received nationally (typical 2025 total: $187).

https://glasscript.com/doctor/1127/robert-a-zajac

Source: CMS Open Payments, program years 2019-2025. Payments are legal and often routine.

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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.