GlassScriptPhysician profile
John Michael Mcmahon
NPI 1811279235
$10,840.47
in general payments reported to CMS, 2019-2025
9 companies · $1,269 in 2025
The $1,269 reported for 2025 was more than what 97% of General Practice (Dentist) providers received nationally (typical 2025 total: $74.60).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $8,061 · 2020: $38.55 · 2021: $12.08 · 2022: $176 · 2023: $83.31 · 2024: $1,200 · 2025: $1,269.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program: $2,400 · Food and Beverage: $153.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program | $2,400.00 |
| Food and Beverage | $152.70 |
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 |
|---|---|---|---|
| Straumann USA LLC | $7,891.15 | 2019 | |
| Dentsply LLC | $2,400.00 | 2024-2025 | |
| Patterson Companies, INC. | $286.95 | 2019-2023 | |
| Dentsply Sirona INC | $154.98 | 2019-2025 | Suresmile, Cerec |
| Biolase, INC. | $50.44 | 2022 | |
| Envista Holdings Corporation | $18.32 | 2025 | Endodontics |
| Kerr Corporation | $15.00 | 2020 | |
| Kulzer, LLC | $12.22 | 2019 | |
| Kavo Dental Technologies LLC | $11.41 | 2020 |
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 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.