Physician profile
Daniel Tandel Chang
NPI 1285722892
$37,571.00
in general payments reported to CMS, 2019-2025
8 companies · $611 in 2025
The $611 reported for 2025 was more than what 78% 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: $97.29 · 2020: $90.90 · 2021: $139 · 2022: $7,146 · 2023: $24K · 2024: $5,457 · 2025: $611.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Travel and Lodging: $17K · Consulting Fee: $10K · Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program: $2,500 · Food and Beverage: $1,023.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Travel and Lodging | $16,566.74 |
| Consulting Fee | $10,007.36 |
| Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program | $2,500.00 |
| Food and Beverage | $1,023.26 |
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 |
|---|---|---|---|
| Siemens Medical Solutions USA, INC. | $34,614.82 | 2022-2025 | Varian Treatment, Truebeam, Halcyon |
| Reflexion Medical, INC. | $1,350.00 | 2021-2022 | |
| Mentor Worldwide LLC | $1,079.74 | 2021-2024 | Mentor Memorygel Resterilizable Gel Sizer |
| Viewray Technologies INC | $245.51 | 2022 | |
| Varian Medical Systems, INC. | $97.29 | 2019 | |
| Axogen | $90.90 | 2020 | |
| Novocure INC. | $53.66 | 2024 | Optune |
| Mevion_medical_systems_inc | $39.08 | 2023 | Pts250 |
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 Chang 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.