Physician profile
Christopher A Barker
NPI 1598959058
$31,917.15
in general payments reported to CMS, 2019-2025
7 companies · $5,275 in 2025
The $5,275 reported for 2025 was more than what 95% of Radiation Oncology providers received nationally (typical 2025 total: $172).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $16K · 2020: $2,541 · 2021: $2,835 · 2024: $4,951 · 2025: $5,275.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Consulting Fee: $9,409 · Food and Beverage: $762 · Travel and Lodging: $55.00.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Consulting Fee | $9,408.96 |
| Food and Beverage | $762.39 |
| Travel and Lodging | $55.00 |
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 |
|---|---|---|---|
| Regeneron Pharmaceuticals, INC. | $16,152.81 | 2019-2024 | Libtayo |
| Genzyme Corporation | $10,489.33 | 2019-2020 | |
| Regeneron Healthcare Solutions, INC. | $5,275.01 | 2025 | Libtayo |
4 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 Christopher Barker 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.