Physician profile
Flavia E Kostov
NPI 1174545107
$743.93
in general payments reported to CMS, 2019-2025
18 companies · $308 in 2025
The $308 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: 2019: $38.82 · 2020: $18.44 · 2021: $11.92 · 2022: $188 · 2023: $90.15 · 2024: $88.35 · 2025: $308.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $469 · Education: $18.09.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $468.86 |
| Education | $18.09 |
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 |
|---|---|---|---|
| Medtronic, INC. | $142.28 | 2022 | |
| Genzyme Corporation | $78.47 | 2023-2025 | |
| Array Biopharma INC | $75.31 | 2024-2025 | Mektovi, Braftovi, Tukysa |
| Abbvie INC. | $71.64 | 2024-2025 | |
| Gilead Sciences, INC. | $56.25 | 2021-2025 | Trodelvy |
| Janssen Biotech, INC. | $52.87 | 2025 | Darzalex, Tecvayli, Talvey |
| Stemline Therapeutics INC. | $45.52 | 2022 | |
| Ipsen Biopharmaceuticals, INC | $26.70 | 2025 | Onivyde |
| Seagen INC. | $24.58 | 2019 | |
| Daiichi Sankyo INC. | $24.50 | 2025 | Datroway |
| Astrazeneca Pharmaceuticals LP | $24.18 | 2025 | Enhertu |
| Kite Pharma, INC. | $21.05 | 2023 | |
| Pfizer INC. | $19.66 | 2025 | |
| E.R. Squibb & Sons, L.L.C. | $18.44 | 2020 | |
| Merck Sharp & Dohme LLC | $18.09 | 2024 | Keytruda |
Show all 18 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Glaxosmithkline, LLC. | $16.88 | 2025 | Ojjaara, Blenrep |
| Agios Pharmaceuticals, INC. | $14.24 | 2019 | |
| Amgen INC. | $13.27 | 2023 | Lumakras |
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 Flavia Kostov 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.