Daphne Stewart, MD
Medical Oncology · Los Angeles, CANPI 1598879918
Payments from drug & device makers
Across 292 payments — averaging $13,551 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$2.8M
- AstraZeneca$306K
- Hoffmann-la Roche Limited$173K
- Incyte Corporation$172K
- Astrazeneca UK Limited$138K
- Genentech, Inc.$83K
- plus $308K from 11 others
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 |
|---|---|---|
| Merck | 11 | $2,777,067 |
| AstraZeneca | 14 | $306,242 |
| Hoffmann-la Roche Limited | 9 | $173,061 |
| Incyte Corporation | 163 | $171,552 |
| Astrazeneca UK Limited | 4 | $138,025 |
| Genentech, Inc. | 13 | $82,776 |
| Pfizer | 17 | $79,195 |
| GSK | 24 | $63,231 |
| Eli Lilly | 5 | $61,671 |
| AbbVie | 10 | $42,194 |
| E.r. Squibb & Sons, L.L.C. | 4 | $23,299 |
| Immunogen, Inc. | 1 | $19,263 |
| Jazz Pharmaceuticals Inc. | 10 | $18,876 |
| Novartis | 4 | $156 |
| Tempus AI, Inc | 1 | $111 |
| Lilly USA, LLC | 1 | $15 |
| Gilead | 1 | $12 |
How this compares
$3,956,747 in reported general payments places this provider in the 90th percentile of 379 medical oncology providers in California.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other medical oncology in Los Angeles
- Sarmad SadeghiLos Angeles$26.1M
- Heinz-Josef LenzLos Angeles$11.6M
- Anthony El-KhoueiryLos Angeles$10.5M
- Stephen LiuLos Angeles$8M
- Mark AgulnikLos Angeles$5M
- David QuinnLos Angeles$4M
- Patricia YoungLos Angeles$3.1M
- David TranLos Angeles$3.1M
- Syma IqbalLos Angeles$1.9M
- Afsaneh BarziLos Angeles$1.7M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.