Physician profile
Mark S Riddle
NPI 1851350441
$21,548.76
in general payments reported to CMS, 2019-2025
4 companies · none reported in 2025
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2020: $3,500 · 2021: $18K · 2023: $18.92.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $18.92.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $18.92 |
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 |
|---|---|---|---|
| Emergent Biosolutions INC. | $17,569.84 | 2021 | |
| Redhill Biopharma INC. | $3,500.00 | 2020 | |
| Glaxosmithkline, LLC. | $460.00 | 2021 | |
| Bavarian Nordic A/S | $18.92 | 2023 |
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Mark Riddle 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.