GlassScriptPhysician profile
Daniel Allan Hamstra
NPI 1386656213
$14,796.83
in general payments reported to CMS, 2019-2025
18 companies · $2,042 in 2025
The $2,042 reported for 2025 was more than what 90% 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: $8,651 · 2021: $347 · 2022: $877 · 2023: $67.13 · 2024: $2,812 · 2025: $2,042.
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: $3,575 · Food and Beverage: $752 · Travel and Lodging: $594.
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 | $3,575.00 |
| Food and Beverage | $751.99 |
| Travel and Lodging | $594.43 |
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 |
|---|---|---|---|
| Boston Scientific Corporation | $12,256.24 | 2019-2025 | Spaceoar System, Spaceoar Vue System - 10ml |
| Brainlab, INC. | $945.88 | 2024 | Surgical Planning and Navigation Radiation Treatment Planning and Positioning |
| Monteris Medical Corporation | $214.19 | 2022 | |
| Genentech USA, INC. | $154.15 | 2022 | |
| Bioprotect Medical, INC. | $143.30 | 2024 | Bioprotect Balloon Implant System |
| Pfizer INC. | $129.31 | 2022 | |
| Isoray, INC | $113.68 | 2021 | |
| Myovant Sciences INC. | $111.79 | 2022 | |
| Astellas Pharma US INC | $106.07 | 2021-2025 | Xtandi |
| Varian Medical Systems, INC. | $103.83 | 2019 | |
| Viewray Technologies INC | $101.88 | 2021-2022 | |
| Gt Medical Technologies, INC | $98.66 | 2022 | |
| Bayer Healthcare Pharmaceuticals INC. | $93.80 | 2019 | |
| Accuray Incorporated | $72.02 | 2024 | |
| Ion Beam Applications S.A. | $51.00 | 2019 |
Show all 18 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Siemens Medical Solutions USA, INC. | $41.25 | 2025 | Eclipse Treatment Planning System For External Beam Radiation Therapy, Somatom Go.Top |
| Mevion_medical_systems_inc | $33.51 | 2022 | |
| Teleflex LLC | $26.27 | 2024 |
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 Daniel Hamstra 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.
Share this page
Keep an eye on this page
Get an email when the next June refresh changes this page. No account needed.
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.