Daniel Zainfeld, MD
Urology · San Antonio, TXNPI 1972896777
Payments from drug & device makers
Across 250 payments — averaging $18,785 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$2.5M
- Janssen Research & Development, LLC$2.2M
- Pfizer$34K
- Johnson & Johnson$8K
- Intuitive Surgical$6K
- Urogen Pharma, Inc.$3K
- plus $7K from 13 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 | 40 | $2,472,392 |
| Janssen Research & Development, LLC | 125 | $2,166,099 |
| Pfizer | 6 | $34,082 |
| Johnson & Johnson | 18 | $8,214 |
| Intuitive Surgical | 22 | $5,514 |
| Urogen Pharma, Inc. | 19 | $2,839 |
| Janssen Scientific Affairs, LLC | 2 | $1,989 |
| Janssen Global Services, LLC | 2 | $1,692 |
| AstraZeneca | 2 | $1,640 |
| E.r. Squibb & Sons, L.L.C. | 1 | $840 |
| Organon | 1 | $473 |
| Astellas Pharma US Inc | 2 | $106 |
| Photocure Inc | 1 | $85 |
| Ferring Pharmaceuticals Inc. | 3 | $61 |
| Sumitomo Pharma America, Inc. | 2 | $43 |
| Novartis | 1 | $31 |
| Olympus America Inc. | 1 | $24 |
| Coloplast | 1 | $15 |
| KARL Storz Endoscopy-america | 1 | $12 |
How this compares
$4,696,150 in reported general payments places this provider in the 95th percentile of 878 urology providers in Texas.
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 urology in San Antonio
- Jose de la CerdaSan Antonio$9M
- Daniel SaltzsteinSan Antonio$5.8M
- Kenneth StallmanSan Antonio$1.3M
- Naveen KellaSan Antonio$1M
- Robert SvatekSan Antonio$818K
- Leroy JonesSan Antonio$556K
- Christopher CantrillSan Antonio$348K
- Maurilio Garcia-GilSan Antonio$296K
- Zvi SchiffmanHouston$17.8M
- Jose KaramHouston$5.7M
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.