Wilson Tsai, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Walnut Creek, CANPI 1609035666
Payments from drug & device makers
What this record shows
The money is spread across several categories — education (35.0%), consulting fees and speaking fees — rather than concentrated in one kind of arrangement. 37 manufacturers reported payments, led by Intuitive Surgical at 55.9% of the total. Reporting peaked in 2023 at $134,634 and has fallen 75.5% since, to $32,969 in 2025. Among thoracic surgery (cardiothoracic vascular surgery) clinicians in CA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 1,066 payments — averaging $637.95 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$380K
- Johnson & Johnson$129K
- Medical Device Business Services, Inc.$33K
- Pinnacle Biologics, Inc$26K
- Davol Inc.$24K
- Ambu Inc.$24K
- plus $64K from 31 others
Across 4 payments — averaging $1543.00 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.
- Concordia Laboratories Inc.$4K
- Ethicon Endo-surgery Inc.$2K
- Janssen Research & Development, LLC$672
What the payments were for
- Consulting fees$216,33732%
- Speaking & faculty fees$114,41617%
- Travel & lodging$72,39111%
- Food & beverage$38,8506%
- Education$238,01835%
- Gifts$430%
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 |
|---|---|---|
| Intuitive Surgical | 490 | $380,044 |
| Johnson & Johnson(3 entities) | 144 | $129,312 |
| Medical Device Business Services, Inc. | 41 | $32,787 |
| Pinnacle Biologics, Inc | 56 | $26,254 |
| Davol Inc. | 147 | $24,006 |
| Ambu Inc. | 13 | $23,814 |
| Noah Medical Corporation | 18 | $23,662 |
| Ethicon Endo-surgery Inc. | 11 | $16,350 |
| Body Vision Medical Inc. | 14 | $12,677 |
| Atricure, Inc. | 60 | $3,182 |
| Mauna Kea Technologies, Inc. | 3 | $2,160 |
| TELA Bio, Inc. | 6 | $1,344 |
| BD | 5 | $986 |
| Zimmer Biomet | 9 | $932 |
| Conmed Corporation | 5 | $342 |
| Galvanize Therapeutics, Inc | 3 | $293 |
| Olympus America Inc. | 6 | $279 |
| Pulmonx Corporation | 8 | $247 |
| Dilon Technologies, Inc. | 2 | $244 |
| Siemens Medical Solutions USA, Inc. | 1 | $143 |
| Teleflex LLC | 2 | $135 |
| AstraZeneca | 4 | $133 |
| Galderma Laboratories, L.p. | 1 | $128 |
| E.r. Squibb & Sons, L.L.C. | 1 | $115 |
| Novocure Inc. | 1 | $83 |
| Covidien LP | 3 | $53 |
| AbbVie | 2 | $53 |
| Mimedx Group, Inc. | 1 | $45 |
| Philips North America LLC | 1 | $43 |
| Medtronic | 1 | $41 |
| Hemosonics LLC | 1 | $32 |
| Avanos Medical | 1 | $30 |
| Laborie Medical Technologies Corp. | 1 | $29 |
| On Target Laboratories, Inc | 1 | $28 |
| Nevro Corp. | 1 | $18 |
| Mallinckrodt Enterprises LLC | 1 | $16 |
| Octapharma USA, Inc. | 1 | $16 |
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.
- Da Vinci Surgical System$362,372
- Monarch Platform$66,064
- Photofrin$24,548
- LINX Reflux Management System$17,969
- Phasix Mesh$17,758
- LungVision$12,129
- DA VINCI SP$11,500
- MONARCH$5,144
- GALAXY$3,000
- Echelon Flex$2,699
- ECHELON ENDOPATH$1,350
- ATRICURE CRYOICE CRYOSPHERE CRYOABLATION SYSTEM$1,196
- OviTex Reinforced Bioscaffold With Permanent Polymer (OviTex)$1,023
- AdvantageRib$740
- PHASIX$442
- ALIYA SYSTEM$238
- ATRICURE CRYOICE CRYOABLATION SYSTEM (CRYO2)$217
- N/A$159
- HemoBlast Bellows$150
- OviTex 2S$146
How this compares
$680,056 in reported general payments places this provider in the 95th percentile of 546 thoracic surgery (cardiothoracic vascular surgery) providers in California.
See all thoracic surgery (cardiothoracic vascular 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 thoracic surgery (cardiothoracic vascular surgery) in Walnut Creek
- Thomas FogartyPortola Valley$3.7M
- Steven GundryPalm Springs$1.6M
- Armin KiankhooySaint Helena$941K
- Ara KlijianMurrieta$916K
- Gregory FontanaThousand Oaks$875K
- Gansevoort DunningtonSaint Helena$764K
- Fernando FleischmanLos Angeles$608K
- Harmik SoukiasianLos Angeles$577K
- Ali KhoynezhadLong Beach$476K
- Jay LeeLos Angeles$462K
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.