Physician profile
Spencer R Berthelsen
NPI 1295763290
$891,083.14
in general payments reported to CMS, 2019-2025
1 company · $891K in 2025
The $891K reported for 2025 was more than what 99% of Internal Medicine providers received nationally (typical 2025 total: $156).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2025: $891K.
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: $890K · Travel and Lodging: $798 · Food and Beverage: $402 · Gift: $50.00.
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 | $889,833.72 |
| Travel and Lodging | $797.84 |
| Food and Beverage | $401.58 |
| Gift | $50.00 |
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 |
|---|---|---|---|
| Ionis Pharmaceuticals, INC. | $891,083.14 | 2025 |
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Spencer Berthelsen 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.