Physician profile
Thomas G Ahn
NPI 1669556866
$15,354.04
in general payments reported to CMS, 2019-2025
66 companies · $2,565 in 2025
The $2,565 reported for 2025 was more than what 95% of Internal Medicine providers received nationally (typical 2025 total: $156).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $2,146 · 2020: $1,520 · 2021: $2,092 · 2022: $1,862 · 2023: $2,549 · 2024: $2,619 · 2025: $2,565.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $7,675 · Gift: $59.40.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $7,674.65 |
| Gift | $59.40 |
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. | $2,368.91 | 2019-2025 | Ubrelvy, Qulipta, Synthroid |
| Lilly USA, LLC | $1,631.35 | 2019-2025 | Mounjaro, Trulicity, Jardiance |
| Amgen INC. | $1,353.13 | 2019-2025 | Tepezza, Repatha, Evenity |
| Novo Nordisk INC | $1,098.72 | 2019-2025 | Ozempic, Rybelsus, Wegovy |
| Sanofi-Aventis U.S. LLC | $990.09 | 2019-2023 | |
| Mannkind Corporation | $638.52 | 2020-2025 | Afrezza |
| Boehringer Ingelheim Pharmaceuticals, INC. | $578.45 | 2019-2025 | Jardiance, Synjardy, Tradjenta |
| Astrazeneca Pharmaceuticals LP | $571.19 | 2019-2025 | Airsupra, Farxiga, Breztri |
| Ibsa Pharma INC. | $545.87 | 2019-2025 | Tirosint, Licart, Flector |
| Bayer Healthcare Pharmaceuticals INC. | $494.00 | 2022-2025 | |
| Dexcom, INC. | $393.09 | 2019-2025 | Dexcom G6 Transmitter |
| Abbott Laboratories | $293.69 | 2022-2025 | Freestyle Libre 3, Eterna |
| Ardelyx, INC. | $258.54 | 2023-2025 | Ibsrela |
| Horizon Therapeutics Plc | $256.96 | 2020-2023 | Tepezza |
| Beta Bionics, INC. | $229.55 | 2024-2025 | Ilet Bionic Pancreas, Ilet Insulin Infusion Kit Inset, Ilet Insulin Infusion Kit Contact Detach |
Show all 66 companies
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 Thomas Ahn 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.