Alan Zhang, MD
Sports Medicine · San Francisco, CANPI 1740445162
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $212,663 of the $246,671 with a category attached, or 86.2%. Stryker accounts for 71.0% of it on its own, with 5 other manufacturers making up the rest. Among sports medicine 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 227 payments — averaging $1086.66 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$175K
- Medical Device Business Services, Inc.$48K
- Linvatec Corporation$13K
- Depuy Synthes Products, Inc.$9K
- Miach Orthopaedics, Inc.$1K
- Johnson & Johnson$337
What the payments were for
- Consulting fees$212,66386%
- Speaking & faculty fees$3,5001%
- Travel & lodging$22,4329%
- Food & beverage$8,0773%
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 |
|---|---|---|
| Stryker | 165 | $175,187 |
| Medical Device Business Services, Inc. | 38 | $48,196 |
| Linvatec Corporation | 9 | $13,114 |
| Depuy Synthes Products, Inc. | 8 | $8,730 |
| Miach Orthopaedics, Inc. | 2 | $1,109 |
| Johnson & Johnson | 5 | $337 |
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.
- MILAGRO$47,861
- RIGIDLOOP$47,861
- MONOVISC$47,861
- ICONIX$33,794
- NA$30,548
- INSIGNIA$18,838
- AEQUALIS$14,300
- HIP ARTHROSCOPY ACCESS & INSTRUMENTATION SET$14,199
- SPY-PHI SYSTEM$12,375
- CROSSFLOW PUMP$11,577
- NANOTACK FLEX$11,543
- 1788$11,275
- FLEXIBLE GUIDE PIN (STRYKER ACL VERSITOMIC)$11,275
- TRIATHLON$7,150
- INSPACE$6,945
- Y-KNOT$6,250
- SALVATION$5,771
- SERFAS ENERGY PROBES$4,000
- BioBrace 23mm$3,621
- LINVATEC SHOULDER ARTHROSCOPY$3,078
How this compares
$246,671 in reported general payments places this provider in the 95th percentile of 662 sports medicine 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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 16 | $140 |
| Ondansetron Hcl | 16 | $60 |
| Ibuprofen | 13 | $54 |
Paid to pharmacies, not to this prescriber.
Other sports medicine in San Francisco
- Jeffrey HalbrechtSan Francisco$502K
- Chunbong MaSan Francisco$439K
- James ChenSan Francisco$152K
- Neal ElattracheLos Angeles$51M
- Nathaniel CohenLos Gatos$6.4M
- Thomas KnappSanta Monica$2.5M
- Michael FreehillStanford$1.6M
- Allan MishraMenlo Park$1.5M
- Heinz Hoeneckela Jolla$1.4M
- Seth ShermanStanford$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.