Kevin Yoon
Medical Oncology · Lancaster, CANPI 1972092674
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $1,576 of the $1,759 with a category attached, or 89.6%. It is spread thinly across 26 manufacturers, the largest accounting for just 12.8% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $583, more than ten times the $47 reported in 2022. That places this record below the midpoint for medical oncology clinicians in CA, where the typical reported total is $4,042.
Across 65 payments — averaging $27.07 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$225
- Bristol Myers Squibb$216
- Astellas Pharma US Inc$153
- Sanofi$114
- Eisai Inc.$92
- Merck$85
- plus $876 from 20 others
What the payments were for
- Food & beverage$1,57690%
- Education$18310%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| AstraZeneca(2 entities) | 9 | $225 |
| Bristol Myers Squibb | 8 | $216 |
| Astellas Pharma US Inc | 3 | $153 |
| Sanofi | 4 | $114 |
| Eisai Inc. | 4 | $92 |
| Merck | 3 | $85 |
| Gilead | 3 | $82 |
| Genentech USA, Inc. | 3 | $78 |
| Seagen Inc. | 3 | $76 |
| Regeneron Healthcare Solutions, Inc. | 2 | $74 |
| Lilly USA, LLC | 2 | $65 |
| ADC Therapeutics America, Inc. | 2 | $62 |
| Bayer | 2 | $50 |
| Incyte Corporation | 2 | $49 |
| Foundation Medicine, Inc. | 2 | $46 |
| Mirati Therapeutics, Inc. | 2 | $39 |
| Pfizer | 2 | $39 |
| Karyopharm Therapeutics Inc. | 1 | $34 |
| Immunogen, Inc. | 1 | $29 |
| Atricure, Inc. | 1 | $29 |
| Agios Pharmaceuticals, Inc. | 1 | $23 |
| AbbVie | 1 | $23 |
| E.r. Squibb & Sons, L.L.C. | 1 | $23 |
| Blueprint Medicines Corporation | 1 | $19 |
| Array Biopharma Inc | 1 | $18 |
| Kyowa Kirin, Inc. | 1 | $18 |
How this compares
$1,759 in reported general payments places this provider in the 40th percentile of 379 medical oncology providers in California.
Other medical oncology in Lancaster
- Stephen SherwinSan Francisco$6.9M
- Noam DrazinBeverly Hills$1.4M
- Farshid DayyaniOrange$1.2M
- April TeitelbaumSan Diego$1.1M
- Przemyslaw TwardowskiSanta Monica$995K
- Ann LowePalo Alto$923K
- Marin XavierSan Diego$919K
- Munveer Bhangoola Jolla$804K
- Stephen LiuLos Angeles$750K
- Jacek PinskiLos Angeles$672K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.