Physician profile
Billy Wiseman Loo
NPI 1720167711
$10,908.13
in general payments reported to CMS, 2019-2025
8 companies · $144 in 2025
The $144 reported for 2025 was less than what a typical Radiation Oncology provider received nationally (typical 2025 total: $172).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $286 · 2020: $22.08 · 2022: $1,051 · 2023: $2,702 · 2024: $6,703 · 2025: $144.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Honoraria: $6,935 · Travel and Lodging: $1,818 · Food and Beverage: $711 · Compensation For Serving As Faculty Or As A Speaker For A Medical Education Program: $84.32.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Honoraria | $6,934.93 |
| Travel and Lodging | $1,818.22 |
| Food and Beverage | $711.15 |
| Compensation For Serving As Faculty Or As A Speaker For A Medical Education Program | $84.32 |
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 |
|---|---|---|---|
| Mevion_medical_systems_inc | $7,765.64 | 2019-2024 | Pts250 |
| Reflexion Medical, INC. | $1,929.26 | 2022-2024 | Reflexion Medical Radiotherapy System |
| Novocure INC. | $685.00 | 2022 | |
| Astrazeneca Pharmaceuticals Lp | $144.20 | 2025 | |
| Siemens Medical Solutions USA, INC. | $125.13 | 2022-2023 | |
| Varian Medical Systems, INC. | $119.37 | 2019-2020 | |
| Genentech USA, INC. | $115.73 | 2023 | Tecentriq |
| Elekta, INC. | $23.80 | 2023 | Elekta Unity |
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 Billy Loo 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.