GlassScriptPhysician profile
John B Williamson
NPI 1366448623
$1,441.74
in general payments reported to CMS, 2019-2025
11 companies · $142 in 2025
The $142 reported for 2025 was less than what a typical Physician Assistant provider received nationally (typical 2025 total: $183).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2021: $67.17 · 2022: $505 · 2023: $399 · 2024: $329 · 2025: $142.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $870.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $869.70 |
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 |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | $367.07 | 2021-2023 | |
| Glaukos Corporation | $197.30 | 2023 | Istent Infinite Trabecular Micro-Bypass System Model Is3, Is3-Istent Infinitetrabecular Micro-Bypass System Model Is3, Photrexa Cross-Linking Kit |
| Johnson & Johnson Surgical Vision, INC. | $191.38 | 2024 | Tecnis Iol, Catalys System |
| Allergan, INC. | $171.68 | 2021-2022 | |
| Dompe US, INC. | $145.70 | 2023-2024 | Oxervate |
| Harrow Eye, LLC | $124.27 | 2025 | Vevye |
| Ocular Therapeutix, INC. | $112.99 | 2022 | |
| Abbvie INC. | $73.15 | 2023 | |
| Mallinckrodt Hospital Products INC. | $20.61 | 2024 | Acthar |
| Sun Pharmaceutical Industries INC. | $20.29 | 2023 | Cequa |
| Johnson & Johnson Vision Care, INC. | $17.30 | 2025 |
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 John Williamson 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.