Physician profile
John S Hammes
NPI 1891766994
$135.76
in general payments reported to CMS, 2019-2025
5 companies · none reported in 2025
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $17.17 · 2020: $41.45 · 2021: $13.13 · 2023: $5.32 · 2024: $58.69.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $58.69 · Education: $5.32.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $58.69 |
| Education | $5.32 |
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.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Opko Pharmaceuticals, LLC | $41.45 | 2020 | |
| Nxstage Medical, INC. | $33.49 | 2024 | |
| Glaxosmithkline, LLC. | $30.30 | 2019-2021 | |
| Fresenius USA Marketing, INC. | $25.20 | 2024 | Velphoro |
| Travere Therapeutics, INC. | $5.32 | 2023 |
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.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw John Hammes 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.