Yen Hsun Chen, MD
Hand Surgery · Alhambra, CANPI 1396122487
Payments from drug & device makers
Across 68 payments — averaging $132.84 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$5K
- Stryker$2K
- Axogen$984
- Saxum Surgical, Inc.$538
- Zimmer Biomet$430
- Amgen$141
- plus $486 from 9 others
What the payments were for
- Travel & lodging$1,96622%
- Food & beverage$3,46738%
- Education$3,60040%
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 |
|---|---|---|
| Arthrex | 17 | $4,869 |
| Stryker | 27 | $1,584 |
| Axogen | 3 | $984 |
| Saxum Surgical, Inc. | 2 | $538 |
| Zimmer Biomet | 6 | $430 |
| Amgen(2 entities) | 2 | $141 |
| Trimed, Inc. | 1 | $139 |
| Micromed Inc | 1 | $67 |
| Skeletal Dynamics Inc | 1 | $65 |
| Vertex | 2 | $56 |
| Bioventus LLC | 2 | $50 |
| Globus Medical | 1 | $48 |
| Vericel Corporation | 1 | $24 |
| Johnson & Johnson | 1 | $20 |
| Acera Surgical, Inc. | 1 | $18 |
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.
- AVANCE NERVE GRAFT$966
- GAMMA$391
- T2 ALPHA$288
- PANGEA$275
- AXSOS$249
- PROFYLE$175
- Persona$167
- EVENITY$125
- ORTHOLOC 3DI$100
How this compares
$9,033 in reported general payments places this provider in the 70th 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Diclofenac Sodium | 204 | $15,165 |
| Celecoxib | 146 | $3,268 |
| Naproxen | 68 | $437 |
| Meloxicam | 46 | $237 |
| Gabapentin | 28 | $215 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 29 | $192 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 15 | $148 |
| Ibuprofen | 20 | $108 |
| Tramadol Hcl | 57 | $86 |
Paid to pharmacies, not to this prescriber.
Other hand surgery in Alhambra
- Michael Thompsonla Jolla$8.8M
- Steven ShinLos Angeles$2.9M
- Amy LaddStanford$1.7M
- Emilie CheungStanford$1.2M
- Andrew HartmanOceanside$957K
- Nancy LynchSan Mateo$862K
- Jeffrey YaoRedwood City$730K
- Michael BehrmanSanta Barbara$593K
- Prosper BenhaimLos Angeles$492K
- Robin KamalStanford$436K
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.