GlassScriptPhysician profile
William Thomas Chang
NPI 1770112609
$9,136.37
in general payments reported to CMS, 2019-2025
9 companies · $5,194 in 2025
The $5,194 reported for 2025 was more than what 93% of Pain Medicine (Anesthesiology) providers received nationally (typical 2025 total: $458).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2022: $527 · 2024: $3,416 · 2025: $5,194.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Travel and Lodging: $3,509 · Food and Beverage: $3,100 · Grant: $2,000.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Travel and Lodging | $3,509.42 |
| Food and Beverage | $3,099.77 |
| Grant | $2,000.00 |
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 |
|---|---|---|---|
| Medtronic, INC. | $7,802.10 | 2022-2025 | Synchromedii, Intellis Adaptivestim, Inceptiv |
| Boston Scientific Corporation | $548.15 | 2022-2025 | Intracept |
| Merz Pharmaceuticals, LLC | $267.03 | 2022-2024 | Xeomin |
| Spr Therapeutics, INC | $214.20 | 2025 | Sprint Pns System |
| Stimwave Technologies Incorporated | $82.61 | 2022 | |
| Vertos Medical, INC. | $80.68 | 2024 | Mild Device Kit |
| Abbvie INC. | $69.70 | 2025 | |
| Vertex Pharmaceuticals Incorporated | $50.88 | 2025 | |
| Globus Medical, INC. | $21.02 | 2025 | Senza |
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 William 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.