Ronald Witteles, MD
Advanced Heart Failure and Transplant Cardiology · Stanford, CANPI 1285779389
Payments from drug & device makers
Across 212 payments — averaging $19,236 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alnylam Pharmaceuticals Inc.$2.6M
- Pfizer$548K
- Janssen Research & Development, LLC$417K
- Ionis Pharmaceuticals, Inc.$390K
- Novo Nordisk AS$46K
- AstraZeneca$44K
- plus $25K from 7 others
Across 41 payments — averaging $1187.80 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.
- Pfizer$42K
- Genentech, Inc.$7K
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 |
|---|---|---|
| Alnylam Pharmaceuticals Inc. | 81 | $2,608,315 |
| Pfizer(2 entities) | 65 | $548,420 |
| Janssen Research & Development, LLC | 12 | $416,696 |
| Ionis Pharmaceuticals, Inc. | 16 | $390,432 |
| Novo Nordisk AS | 11 | $45,514 |
| AstraZeneca(2 entities) | 15 | $44,161 |
| Bridgebio Pharma, Inc. | 3 | $10,175 |
| Akcea Therapeutics, Inc. | 3 | $5,393 |
| Regeneron | 2 | $5,265 |
| Janssen Scientific Affairs, LLC | 1 | $1,768 |
| Astrazeneca AB | 1 | $1,611 |
| Pfizer Corporation Hong Kong Limited | 1 | $224 |
| Medtronic | 1 | $153 |
How this compares
$4,078,126 in reported general payments places this provider in the 95th percentile of 111 advanced heart failure and transplant cardiology providers in California.
See all advanced heart failure and transplant cardiology 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 advanced heart failure and transplant cardiology in Stanford
- Eldrin LewisStanford$1.8M
- Alexander SandhuStanford$1.2M
- Matthew WheelerStanford$1.2M
- Francois HaddadStanford$524K
- Kevin AlexanderStanford$444K
- Jeffrey TeutebergStanford$218K
- Masataka KawanaStanford$66K
- James Heywoodla Jolla$2.1M
- Richard WrightSanta Monica$1.7M
- Eric AdlerSan Diego$1.4M
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.