GlassScriptPhysician profile
Kevin C Mcmahon
NPI 1124339528
$1,227.62
in general payments reported to CMS, 2019-2025
16 companies · $216 in 2025
The $216 reported for 2025 was less than what a typical Neurology (Psychiatry & Neurology) provider received nationally (typical 2025 total: $454).
See the full distribution for Neurology (Psychiatry & Neurology)
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2021: $96.53 · 2022: $216 · 2023: $283 · 2024: $415 · 2025: $216.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $915.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $914.77 |
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 |
|---|---|---|---|
| Sk Life Science, INC. | $276.97 | 2022-2025 | |
| Abbvie INC. | $170.24 | 2023-2025 | |
| Ucb, INC. | $141.32 | 2022-2025 | Briviact, Zilbrysq |
| Ceribell, INC. | $127.55 | 2024 | Pocket Eeg Device |
| Pfizer INC. | $106.06 | 2023-2025 | |
| Acadia Pharmaceuticals INC | $88.92 | 2021-2023 | Nuplazid |
| Upsher-Smith Laboratories LLC | $55.26 | 2021-2022 | |
| Jazz Pharmaceuticals INC. | $52.25 | 2023-2024 | |
| Biohaven Pharmaceutical Holding Company LTD. | $47.85 | 2022 | |
| Lilly USA, LLC | $46.33 | 2024-2025 | Emgality, Amyvid |
| Genentech USA, INC. | $26.20 | 2023 | Enspryng, Ocrevus |
| Greenwich Biosciences, INC. | $26.17 | 2021 | |
| Argenx US, INC. | $23.11 | 2023 | Vyvgart |
| Adamas Pharmaceuticals, INC. | $15.52 | 2021 | |
| Catalyst Pharmaceuticals, INC. | $12.98 | 2023 | Fycompa |
Show all 16 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Sumitomo Pharma America, INC. | $10.89 | 2023 | Aptiom |
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 Kevin Mcmahon 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.