Byron Wilson
Medical Oncology · Castro Valley, CANPI 1992736367
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $2,750 of the $3,767 with a category attached, or 73.0%. 21 manufacturers reported payments, led by Siemens Medical Solutions USA, Inc. at 39.8% of the total. Reporting peaked in 2021 at $1,500 and has fallen 93.5% since, to $97 in 2023. That places this record below the midpoint for medical oncology clinicians in CA, where the typical reported total is $4,042.
Across 49 payments — averaging $76.88 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Siemens Medical Solutions USA, Inc.$2K
- Varian Medical Systems, Inc.$1K
- Sanofi$158
- Genentech USA, Inc.$102
- Celltrion USA Inc.$97
- Seagen Inc.$96
- plus $565 from 15 others
What the payments were for
- Consulting fees$2,75073%
- Food & beverage$96426%
- Education$541%
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 |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | 1 | $1,500 |
| Varian Medical Systems, Inc. | 1 | $1,250 |
| Sanofi | 7 | $158 |
| Genentech USA, Inc. | 5 | $102 |
| Celltrion USA Inc. | 1 | $97 |
| Seagen Inc. | 5 | $96 |
| Amgen | 3 | $71 |
| Lilly USA, LLC | 3 | $61 |
| Merck | 3 | $59 |
| Gilead | 3 | $55 |
| E.r. Squibb & Sons, L.L.C. | 3 | $52 |
| GSK | 2 | $44 |
| AstraZeneca | 2 | $42 |
| Pfizer | 3 | $39 |
| Epizyme, Inc. | 1 | $26 |
| Bristol Myers Squibb | 1 | $22 |
| Pharmacyclics LLC, An Abbvie Company | 1 | $22 |
| Ipsen Biopharmaceuticals, Inc | 1 | $22 |
| Johnson & Johnson | 1 | $19 |
| AMAG Pharmaceuticals, Inc. | 1 | $15 |
| Daiichi Sankyo Inc. | 1 | $14 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- EMBOZENE$1,500
- Radiation Oncology$1,250
How this compares
$3,767 in reported general payments places this provider in the 45th percentile of 379 medical oncology providers in California.
Other medical oncology in Castro Valley
- 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.