Nathan Singh, MD
Medical Oncology · Saint Louis, MONPI 1114362795
Payments from drug & device makers
What this record shows
This record is dominated by grants: $18,182 of the $18,319 with a category attached, or 99.2%. Genentech, Inc. accounts for 99.2% of it on its own, with 2 other manufacturers making up the rest.
Across 3 payments — averaging $6106.48 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Genentech, Inc.$18K
- Gilead$125
- AbbVie$13
Across 2 payments — averaging $90,000 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Gilead$180K
What the payments were for
- Grants$18,18299%
- Food & beverage$1381%
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 |
|---|---|---|
| Genentech, Inc. | 1 | $18,182 |
| Gilead | 1 | $125 |
| AbbVie | 1 | $13 |
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.
- Yescarta$125
How this compares
$18,319 in reported general payments places this provider in the 70th percentile of 144 medical oncology providers in Missouri.
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 Saint Louis
- Brad KahlSaint Louis$336K
- Russell PachynskiSaint Louis$226K
- Mark SchroederSaint Louis$198K
- George AnsstasSaint Louis$189K
- Ravi VijSaint Louis$153K
- Douglas AdkinsSaint Louis$141K
- Milan ChhedaSaint Louis$105K
- Maurice WillisSaint Louis$101K
- Moh'd KhushmanSaint Louis$84K
- Camille AbboudSaint Louis$70K
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.