Physician profile
Marc Zelkowitz
NPI 1609134576
$16,996.15
in general payments reported to CMS, 2019-2025
24 companies · $13K in 2025
The $13K reported for 2025 was more than what 96% of Nephrology (Internal Medicine) providers received nationally (typical 2025 total: $311).
Payments by year
General and research payments by program year, as reported to CMS.
General payments by year: 2019: $326 · 2020: $506 · 2021: $401 · 2022: $886 · 2023: $1,000 · 2024: $769 · 2025: $13K.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program: $11K · Food and Beverage: $3,584 · Travel and Lodging: $266 · Education: $27.26.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program | $11,000.00 |
| Food and Beverage | $3,583.98 |
| Travel and Lodging | $266.05 |
| Education | $27.26 |
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. Research payments are listed separately below. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Ardelyx, INC. | $12,208.16 | 2024-2025 | Xphozah 30 Mg, Ibsrela |
| Vifor Pharma, INC. | $870.42 | 2020-2025 | Veltassa, Korsuva |
| Amgen INC. | $639.48 | 2019-2025 | Tavneos, Krystexxa, Parsabiv |
| Astrazeneca Pharmaceuticals Lp | $595.84 | 2019-2025 | Lokelma, Farxiga |
| Horizon Therapeutics Plc | $535.25 | 2019-2023 | Krystexxa |
| Bayer Healthcare Pharmaceuticals INC. | $450.98 | 2021-2025 | |
| Travere Therapeutics, INC. | $432.05 | 2020-2025 | Filspari |
| Akebia Therapeutics INC | $260.15 | 2019-2025 | Auryxia, Vafseo |
| Novartis Pharmaceuticals Corporation | $173.45 | 2023-2025 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | $169.98 | 2024-2025 | Jardiance |
| Otsuka America Pharmaceutical, INC. | $157.90 | 2019-2022 | |
| Calliditas Therapeutics US INC. | $107.69 | 2022-2025 | Tarpeyo |
| Fresenius USA Marketing, INC. | $99.64 | 2019-2025 | Velphoro, Velphoro |
| Aurinia Pharma U.S., INC. | $86.96 | 2021-2025 | Lupkynis |
| Novo Nordisk INC | $41.83 | 2023-2025 | Rybelsus, Ozempic, Wegovy |
Show all 24 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Otsuka Pharmaceutical Development & Commercialization, INC. | $30.96 | 2024-2025 | Jynarque |
| Ani Pharmaceuticals, INC. | $30.26 | 2023-2025 | Purified Cortrophin Gel |
| Kyowa Kirin, INC. | $18.47 | 2025 | |
| Janssen Pharmaceuticals, INC | $18.40 | 2019 | |
| Boston Scientific Corporation | $14.20 | 2019 | |
| Glaxosmithkline, LLC. | $14.14 | 2022 | |
| Mallinckrodt Hospital Products INC. | $14.03 | 2025 | Acthar |
| Renalytix Ai, INC. | $13.51 | 2025 | Kidneyintelx Blood Collection Convenience Kit |
| Opko Pharmaceuticals, LLC | $12.40 | 2021 |
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.
Research and ownership
$1,225.00 in research payments reported 2019-2025. Research payments are often institution-directed and tied to clinical trials: they are reported under a clinician's name but frequently go to a hospital or research organization, and usually reflect participation in medical research.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Marc Zelkowitz listed in the CMS Open Payments database. Can you tell me about your work with those companies?"
- "Is there a generic or alternative to this medication, and would it work as well for me?"
- "What made you choose this particular treatment for my situation?"
These are normal questions. A good clinician will welcome them.
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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.