GlassScriptPhysician profile
Stuart S Kassan
NPI 1093706475
$2,509.58
in general payments reported to CMS, 2019-2025
21 companies · none reported in 2025
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $550 · 2020: $387 · 2021: $510 · 2022: $1,033 · 2023: $29.40.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $29.40.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $29.40 |
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 |
|---|---|---|---|
| Glaxosmithkline, LLC. | $573.06 | 2019-2022 | |
| Abbvie INC. | $448.19 | 2019-2023 | |
| Horizon Therapeutics Plc | $250.36 | 2019-2022 | |
| Ani Pharmaceuticals, INC. | $218.78 | 2022 | |
| Novartis Pharmaceuticals Corporation | $215.09 | 2019-2021 | |
| Genentech USA, INC. | $196.45 | 2019-2022 | |
| E.R. Squibb & Sons, L.L.C. | $113.60 | 2019-2022 | |
| Mallinckrodt Hospital Products INC. | $109.77 | 2020-2021 | |
| Pfizer INC. | $87.02 | 2019-2022 | |
| Amgen INC. | $86.05 | 2019-2021 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | $37.26 | 2022 | |
| Idorsia Pharmaceuticals US INC | $28.06 | 2022 | |
| Astrazeneca Pharmaceuticals LP | $24.00 | 2022 | |
| Ucb, INC. | $23.81 | 2019 | |
| Eisai INC. | $23.05 | 2020 |
Show all 19 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Sanofi-Aventis U.S. LLC | $23.00 | 2020 | |
| Octapharma USA, INC. | $19.54 | 2022 | |
| Janssen Biotech, INC. | $16.83 | 2020 | |
| Merck Sharp & Dohme LLC | $15.66 | 2019 |
2 companies reported research payments only; those appear in the research section below.
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 Stuart Kassan 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.