GlassScriptPhysician profile
William R Mazalewski
NPI 1841652948
$2,846.76
in general payments reported to CMS, 2019-2025
22 companies · $1,329 in 2025
The $1,329 reported for 2025 was more than what a typical Pulmonary Disease provider received nationally (typical 2025 total: $500).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2022: $220 · 2023: $675 · 2024: $623 · 2025: $1,329.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $2,437 · Education: $190.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $2,437.24 |
| Education | $189.98 |
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 |
|---|---|---|---|
| Regeneron Healthcare Solutions, INC. | $432.06 | 2022-2025 | Dupixent |
| Glaxosmithkline, LLC. | $344.39 | 2023-2025 | Trelegy Ellipta, Nucala, Arexvy |
| Merck Sharp & Dohme LLC | $265.12 | 2022-2025 | Winrevair, Dificid, Zerbaxa |
| Actelion Pharmaceuticals US, INC. | $258.11 | 2023-2025 | Opsumit, Uptravi |
| Boehringer Ingelheim Pharmaceuticals, INC. | $191.54 | 2023-2025 | |
| Insmed, INC. | $161.45 | 2024-2025 | Arikayce |
| Grifols USA, LLC | $143.54 | 2022-2025 | Prolastin-C Liquid |
| Astrazeneca Pharmaceuticals LP | $136.36 | 2024-2025 | Fasenra, Tezspire, Airsupra |
| Intuitive Surgical, INC. | $134.61 | 2025 | |
| Genzyme Corporation | $134.61 | 2022-2025 | |
| Noah Medical Corporation | $120.44 | 2025 | Galaxy |
| United Therapeutics Corporation | $107.09 | 2023-2025 | Tyvaso, Remodulin, Orenitram |
| Medtronic, INC. | $69.00 | 2025 | |
| Takeda Pharmaceuticals U.S.A., INC. | $68.42 | 2024-2025 | Glassia |
| Inogen, INC. | $64.94 | 2023 | Inogen One G5 Oxygen Concentrator - Bluetooth |
Show all 22 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Electromed, INC. | $49.96 | 2024 | Smartvest |
| Baxter Healthcare | $41.52 | 2023-2024 | Hillrom - Vest System Model 105 Home Care |
| Shionogi INC | $40.44 | 2023 | Fetroja |
| Verona Pharma, INC. | $27.31 | 2025 | Ohtuvayre |
| Vapotherm INC | $21.90 | 2022 | |
| Pulmonx Corporation | $18.42 | 2024 | Zephyr Endobronchial Valve, Chartis Catheter, Pulmonx Chartis Tablet Console |
| Tactile Systems Technology INC | $15.53 | 2024 | Entre Plus, Flexitouch Plus |
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 Mazalewski 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.