GlassScriptPhysician profile
William N Marrero
NPI 1396356549
$1,168.99
in general payments reported to CMS, 2019-2025
14 companies · $491 in 2025
The $491 reported for 2025 was more than what 84% of General Practice providers received nationally (typical 2025 total: $105).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2021: $43.57 · 2022: $179 · 2023: $206 · 2024: $249 · 2025: $491.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $946.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $946.46 |
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 |
|---|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $361.18 | 2021-2025 | Opdivo |
| Adaptive Biotechnologies Corporation | $136.88 | 2025 | Clonoseq |
| Adc Therapeutics America, INC. | $119.97 | 2023 | |
| Pbg Puerto Rico LLC | $113.42 | 2024-2025 | |
| Pfizer INC. | $76.27 | 2025 | |
| Karyopharm Therapeutics INC. | $65.45 | 2023 | Xpovio |
| Exelixis INC. | $65.38 | 2022-2024 | Cabometyx |
| Genentech USA, INC. | $62.83 | 2023-2024 | Polivy, Lunsumio, Columvi |
| Genzyme Corporation | $48.11 | 2025 | |
| Janssen Pharmaceuticals, INC | $34.77 | 2021-2022 | |
| Sobi, INC | $28.61 | 2024 | |
| Novo Nordisk INC | $25.00 | 2022 | |
| Seagen INC. | $20.00 | 2022 | |
| Chiesi USA, INC. | $11.12 | 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.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw William Marrero 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.