Physician profile
Andrew Chang
NPI 1396702874
$872.75
in general payments reported to CMS, 2019-2025
9 companies · $161 in 2025
The $161 reported for 2025 was less than what a typical Gastroenterology (Internal Medicine) provider received nationally (typical 2025 total: $636).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $75.55 · 2020: $29.95 · 2021: $62.03 · 2022: $12.29 · 2023: $436 · 2024: $95.80 · 2025: $161.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $594 · Education: $99.00.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $593.93 |
| Education | $99.00 |
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 |
|---|---|---|---|
| Boston Scientific Corporation | $312.96 | 2023-2025 | General - Metal Stents - G.I., Exalt Model D, Wavewriter Alpha Prime 16 |
| Olympus America INC. | $186.67 | 2022-2024 | Disposable Grasping Forceps, Endoclot Phs, Visiglide |
| Janssen Biotech, INC. | $99.00 | 2023 | Tremfya, Stelara |
| Gilead Sciences, INC. | $87.45 | 2019-2021 | |
| Abbott Laboratories | $72.37 | 2023 | Cardiomems |
| Abbvie INC. | $34.47 | 2021 | |
| Genzyme Corporation | $34.22 | 2024 | |
| Allergan, INC. | $29.95 | 2020 | |
| Covidien LP | $15.66 | 2019 |
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 Andrew Chang 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.