GlassScriptPhysician profile
Ana Siu Chang
NPI 1417391467
$1,109.86
in general payments reported to CMS, 2019-2025
13 companies · none reported in 2025
See the full distribution for Hospice and Palliative Medicine (Family Medicine)
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $690 · 2020: $177 · 2021: $224 · 2024: $18.87.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $18.87.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $18.87 |
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 |
|---|---|---|---|
| Novo Nordisk INC | $432.54 | 2019-2021 | |
| Astrazeneca Pharmaceuticals LP | $160.09 | 2019-2021 | |
| Amarin Pharma, INC. | $124.98 | 2019 | |
| Novartis Pharmaceuticals Corporation | $103.01 | 2019-2024 | |
| Astellas Pharma US INC | $56.17 | 2019-2020 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | $46.91 | 2021 | |
| Amgen INC. | $41.95 | 2019-2020 | |
| Allergan, INC. | $40.47 | 2019 | |
| Merck Sharp & Dohme LLC | $34.23 | 2019-2020 | |
| Horizon Therapeutics Plc | $29.32 | 2020 | |
| Shire North American Group INC | $14.38 | 2019 | |
| Janssen Pharmaceuticals, INC | $13.27 | 2020 | |
| Lilly USA, LLC | $12.54 | 2020 |
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 Ana Siu 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.