GlassScriptPhysician profile
Allan Chang
NPI 1134656267
$1,605.38
in general payments reported to CMS, 2019-2025
26 companies · $269 in 2025
The $269 reported for 2025 was more than what a typical Obstetrics & Gynecology provider received nationally (typical 2025 total: $158).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2021: $138 · 2022: $407 · 2023: $492 · 2024: $299 · 2025: $269.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $1,060.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $1,059.83 |
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. | $268.71 | 2021-2025 | Liletta, Orilissa, Lo Loestrin Fe |
| Organon LLC | $240.93 | 2021-2025 | Nexplanon |
| Mayne Pharma Commercial LLC | $162.17 | 2022-2023 | |
| Sage Therapeutics, LLC | $99.48 | 2025 | Zurzuvae |
| Femselect INC. | $96.88 | 2023 | Enplace |
| Shield Therapeutics INC | $89.70 | 2023-2024 | Accrufer |
| Bayer Healthcare Pharmaceuticals INC. | $79.38 | 2022-2023 | |
| Pfizer INC. | $60.90 | 2023-2024 | |
| Exeltis, USA INC. | $52.58 | 2024-2025 | Slynd |
| Coopersurgical, INC. | $49.94 | 2023-2025 | Sos, Mara Console |
| Mylan Pharmaceuticals INC. | $42.25 | 2021-2022 | |
| Biotissue Holdings INC. | $40.99 | 2023 | |
| Aspira Women'S Health INC | $36.09 | 2022-2023 | Ova1 |
| Avion Pharmaceuticals | $33.87 | 2023 | Balcoltra |
| Astellas Pharma US INC | $31.82 | 2024-2025 | Veozah |
Show all 26 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Minerva Surgical, INC | $30.97 | 2021-2022 | |
| Medtronic, INC. | $26.99 | 2024 | V-Loc 180 |
| Hologic Sales and Service, LLC | $25.43 | 2024 | Aptima |
| Amgen INC. | $20.32 | 2025 | Evenity |
| Baxter Healthcare | $19.52 | 2022 | |
| Boston Scientific Corporation | $19.10 | 2025 | General - Female Sui |
| Smith+Nephew, INC. | $17.01 | 2024 | Pico 14 |
| Dexcom, INC. | $16.14 | 2023 | Dexcom G6 Transmitter |
| Agile Therapeutics, INC. | $15.28 | 2024 | Twirla |
| Evofem Biosciences, INC. | $15.04 | 2021 | |
| Mission Pharmacal Company | $13.89 | 2023-2024 | Citranatal Medley |
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 Allan 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.