Eugene Tsai, MD
Hand Surgery · Los Angeles, CANPI 1437474475
Payments from drug & device makers
What this record shows
This record is dominated by education: $18,000 of the $25,563 with a category attached, or 70.4%. Skeletal Dynamics Inc accounts for 72.1% of it on its own, with 18 other manufacturers making up the rest.
Across 79 payments — averaging $323.59 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Skeletal Dynamics Inc$18K
- Musculoskeletal Transplant Foundation Inc.$3K
- Saxum Surgical, Inc.$1K
- Endo Pharmaceuticals Inc.$972
- Polynovo North America LLC$672
- Endo USA, Inc.$294
- plus $1K from 13 others
What the payments were for
- Travel & lodging$3,50614%
- Food & beverage$4,05716%
- Education$18,00070%
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 |
|---|---|---|
| Skeletal Dynamics Inc | 9 | $18,425 |
| Musculoskeletal Transplant Foundation Inc. | 7 | $2,699 |
| Saxum Surgical, Inc. | 4 | $1,493 |
| Endo Pharmaceuticals Inc. | 26 | $972 |
| Polynovo North America LLC | 6 | $672 |
| Endo USA, Inc. | 2 | $294 |
| Micromed Inc | 3 | $195 |
| Axogen | 2 | $146 |
| Acell, Inc. | 1 | $112 |
| Integra Lifesciences Corporation | 3 | $94 |
| Globus Medical | 1 | $72 |
| Dynasplint Systems Inc. | 3 | $71 |
| Stryker | 3 | $69 |
| Medical Device Business Services, Inc. | 1 | $63 |
| Trimed, Inc. | 1 | $62 |
| Johnson & Johnson | 3 | $51 |
| Checkpoint Surgical, Inc | 2 | $39 |
| Zimmer Biomet | 1 | $16 |
| Aroa Biosurgery Incorporated | 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.
- Geminus$18,300
- Align$18,300
- IJS$18,300
- Implate$18,300
- XIAFLEX$957
- Novosorb BTM$334
- AVANCE NERVE GRAFT$123
How this compares
$25,563 in reported general payments places this provider in the 85th percentile of 249 hand 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 hand surgery in Los Angeles
- Steven ShinLos Angeles$2.8M
- Prosper BenhaimLos Angeles$492K
- Raymond RavenLos Angeles$310K
- Luke NicholsonLos Angeles$117K
- Ryan DellamaggioraLos Angeles$61K
- Ali AzadLos Angeles$19K
- Milan StevanovicLos Angeles$14K
- Neil JonesLos Angeles$9K
- Amy LaddStanford$1.4M
- Emilie CheungStanford$1.1M
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.