Warren Gasper, MD
Surgery · San Francisco, CANPI 1427186212
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (56.7%), food and beverage and travel and lodging — rather than concentrated in one kind of arrangement. 13 manufacturers reported payments, led by Provisio Medical, Inc. at 59.3% of the total. Reporting peaked in 2023 at $5,328 and has fallen 90.4% since, to $512 in 2025.
Across 60 payments — averaging $200.85 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Provisio Medical, Inc.$7K
- W. L. Gore & Associates, Inc.$2K
- Medtronic$1K
- Cook Medical LLC$649
- Silk Road Medical, Inc.$473
- Artivion, Inc.$172
- plus $500 from 7 others
Across 5 payments — averaging $8174.78 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.
- Cook Research Incorporated$41K
What the payments were for
- Consulting fees$6,83557%
- Travel & lodging$9178%
- Food & beverage$4,29936%
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 |
|---|---|---|
| Provisio Medical, Inc. | 5 | $7,143 |
| W. L. Gore & Associates, Inc. | 17 | $2,029 |
| Medtronic(2 entities) | 14 | $1,085 |
| Cook Medical LLC | 11 | $649 |
| Silk Road Medical, Inc. | 3 | $473 |
| Artivion, Inc. | 1 | $172 |
| Biotronik Inc. | 1 | $139 |
| Shockwave Medical, Inc | 1 | $126 |
| Philips North America LLC | 2 | $101 |
| Abbott | 2 | $80 |
| Bolton Medical Inc | 1 | $21 |
| Mercator Medsystems, Inc. | 1 | $20 |
| Lemaitre Vascular, 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.
- GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis$1,073
- ENROUTE Transcarotid Neuroprotection System$473
- ENHANCE Transcarotid Peripheral Access Kit$473
- ENROUTE Transcarotid Stent$367
- ENROUTE .014 Guidewire$367
- Heli-FX EndoAnchor System$294
- GORE TAG Thoracic Endoprosthesis$188
- GORE TAG Conformable Thoracic Stent Graft$175
- VASCULAR$172
- PHOTOFIX DECELLULARIZED BOVINE PERICARDIUM$172
- BIOGLUE SURGICAL ADHESIVE$172
- ENDURANT IIS$165
- AqWire$140
- Passeo-18$139
- Zenith Alpha$137
- IN.PACT Admiral$131
- GORE TAG Conformable Thoracic Endoprosthesis$126
- C3 Delivery System$126
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$126
- Cook Medical AAA$121
How this compares
$12,051 in reported general payments places this provider in the 80th percentile of 2,363 surgery 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 surgery in San Francisco
- Timothy ChuterSan Francisco$8.8M
- Shane BurchSan Francisco$500K
- Charles EichlerSan Francisco$310K
- Michael AlvaradoSan Francisco$201K
- Scott HansenSan Francisco$186K
- Santiago HorganSan Diego$2.8M
- Rock LiuHayward$1.6M
- David LouriePasadena$1.4M
- Andrea PakulaThousand Oaks$1.4M
- Siew-Ming LeeFresno$1.3M
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.