Physician profile
Amanda I Diffin
NPI 1710547385
$1,145.17
in general payments reported to CMS, 2019-2025
24 companies · $520 in 2025
The $520 reported for 2025 was more than what a typical Physician Assistant provider received nationally (typical 2025 total: $183).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2021: $65.25 · 2022: $115 · 2023: $132 · 2024: $312 · 2025: $520.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $965.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $964.63 |
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 |
|---|---|---|---|
| Abbvie INC. | $110.96 | 2025 | |
| Corium, LLC | $108.21 | 2023-2024 | Azstarys |
| Lilly USA, LLC | $77.69 | 2024-2025 | Zepbound, Mounjaro, Emgality |
| Glaxosmithkline, LLC. | $75.96 | 2021-2025 | Arexvy, Shingrix |
| Exact Sciences Corporation | $75.38 | 2024-2025 | The Cologuard Plus Collection Kit, Cologuard Collection Kit |
| Exeltis, USA INC. | $67.05 | 2022-2023 | Slynd |
| Novo Nordisk INC | $66.21 | 2024-2025 | Ozempic, Rybelsus |
| Pfizer INC. | $63.42 | 2024-2025 | |
| Astellas Pharma US INC | $59.40 | 2024-2025 | Veozah |
| Janssen Pharmaceuticals, INC | $53.82 | 2024-2025 | Spravato |
| Axsome Therapeutics, INC. | $50.91 | 2024-2025 | Auvelity |
| Hologic Sales and Service, LLC | $50.06 | 2024-2025 | Aptima, Thinprep 2000 Processor |
| Kaleo, INC. | $43.08 | 2021-2022 | |
| Madrigal Pharmaceuticals | $38.15 | 2025 | Rezdiffra |
| Iti, INC. (D/B/A Intra-Cellular Therapies, INC.) | $29.96 | 2025 | Caplyta |
Show all 24 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Biomarin Pharmaceutical INC. | $23.03 | 2021 | |
| Mayne Pharma Commercial LLC | $22.43 | 2023 | |
| Alk-Abello, INC | $20.66 | 2025 | Neffy |
| Astrazeneca Pharmaceuticals LP | $19.86 | 2023 | Flumist Quadrivalent |
| Inspire Medical Systems, INC. | $19.13 | 2025 | Inspire |
| Organon LLC | $19.00 | 2025 | Nexplanon |
| Lundbeck LLC | $17.77 | 2024 | Vyepti |
| Merck Sharp & Dohme LLC | $17.17 | 2022 | |
| Phadia US INC. | $15.86 | 2024 | Immunocap |
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 Amanda Diffin 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.