Physician profile
Kai Sun
NPI 1841746112
$177.03
in general payments reported to CMS, 2019-2025
6 companies · $68.49 in 2025
The $68.49 reported for 2025 was less than what a typical Hematology & Oncology provider received nationally (typical 2025 total: $686).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2021: $23.78 · 2022: $15.16 · 2023: $69.60 · 2025: $68.49.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Education: $93.49 · Food and Beverage: $44.60.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Education | $93.49 |
| Food and Beverage | $44.60 |
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 |
|---|---|---|---|
| Astrazeneca Pharmaceuticals Lp | $68.49 | 2025 | Imfinzi |
| Pfizer INC. | $48.78 | 2021-2023 | |
| Gilead Sciences, INC. | $31.91 | 2023 | Trodelvy |
| Celgene Corporation | $15.16 | 2022 | |
| Tactile Systems Technology INC | $12.69 | 2023 | Entre Plus, Flexitouch Plus |
1 company 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 Kai Sun 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.