Physician profile
Mackenzie Williamson
NPI 1386322048
$1,279.56
in general payments reported to CMS, 2019-2025
6 companies · $254 in 2025
The $254 reported for 2025 was more than what a typical Physician Assistant provider received nationally (typical 2025 total: $183).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2023: $122 · 2024: $903 · 2025: $254.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Travel and Lodging: $748 · Food and Beverage: $431 · Education: $100.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Travel and Lodging | $748.47 |
| Food and Beverage | $431.09 |
| Education | $100.00 |
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 |
|---|---|---|---|
| Intuitive Surgical, INC. | $877.45 | 2024 | |
| Glaxosmithkline, LLC. | $125.00 | 2025 | Jemperli |
| Immunogen, INC. | $122.40 | 2023 | Elahere |
| Daiichi Sankyo INC. | $107.07 | 2025 | Enhertu |
| Ethicon US, LLC | $25.60 | 2024 | Surgicel Nu-Knit, Vistaseal, Evarrest |
| Biotronik INC. | $22.04 | 2025 | Acticor 7 Vr-T Dx |
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 Mackenzie Williamson 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.