Stephen Ryu, MD
Neurological Surgery · Stanford, CANPI 1134153505
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (59.0%), royalties or licence payments and travel and lodging — rather than concentrated in one kind of arrangement. 28 manufacturers reported payments, led by Globus Medical at 57.7% of the total. Reporting peaked in 2019 at $185,628 and has fallen 54.1% since, to $85,212 in 2025. Among neurological 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 847 payments — averaging $1000.53 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Globus Medical$489K
- Stryker$172K
- Zimmer Biomet$51K
- Zimvie Inc.$38K
- Medtronic$29K
- Medical Device Business Services, Inc.$21K
- plus $48K from 22 others
Across 1 payment — averaging $5000.00 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.
- Durastat LLC$5K
Across 11 payments — averaging $23,334 each. An ownership or investment interest held by the physician or an immediate family member.
- Durastat LLC$147K
- Aegis Spine, Inc.$110K
What the payments were for
- Royalty or licence$216,79226%
- Consulting fees$499,60159%
- Speaking & faculty fees$14,6002%
- Travel & lodging$92,70711%
- Food & beverage$23,7513%
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 |
|---|---|---|
| Globus Medical(2 entities) | 422 | $489,307 |
| Stryker | 141 | $171,695 |
| Zimmer Biomet | 66 | $51,116 |
| Zimvie Inc. | 65 | $37,723 |
| Medtronic(2 entities) | 52 | $29,463 |
| Medical Device Business Services, Inc. | 11 | $20,614 |
| Si-bone, Inc. | 16 | $18,333 |
| Highridge Medical LLC | 18 | $16,650 |
| Depuy Synthes Products, Inc. | 16 | $9,097 |
| Arthrex | 8 | $493 |
| Carlsmed, Inc. | 4 | $401 |
| Johnson & Johnson | 4 | $280 |
| Alphatec Spine, Inc | 3 | $269 |
| Spineology Inc. | 3 | $262 |
| MML US, Inc. | 2 | $226 |
| VB Spine LLC | 1 | $223 |
| Providence Medical Technology, Inc. | 3 | $215 |
| Kuros Biosciences USA, Inc | 1 | $188 |
| Cerapedics Inc. | 2 | $176 |
| Biotronik NRO, Inc. | 1 | $173 |
| Evolution Surgical, Inc | 1 | $126 |
| Prosidyan, Inc | 1 | $125 |
| Amplify Surgical, Inc. | 1 | $121 |
| Orthofix Medical, Inc. | 1 | $59 |
| Integrity Implants Inc. | 1 | $35 |
| Nevro Corp. | 1 | $34 |
| Adcura, Inc. | 1 | $25 |
| Heron Therapeutics, Inc. | 1 | $22 |
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.
- Pulse$315,671
- LessRay$169,980
- NVM5$145,129
- Mobi-C$86,657
- TRITANIUM$68,418
- SERRATO$57,181
- Simplify Cervical Artificial Disc$56,520
- AIRO$47,617
- ES2$38,248
- AERO$37,852
- XIA$34,558
- MOUNTAINEER$27,142
- SYNAPSE$27,142
- MESA SPINAL SYSTEM$21,775
- XLIF$21,105
- SYMPHONY$19,696
- MONTEREY AL$19,500
- BACS$18,835
- MESA$18,411
- EVEREST MI$18,250
How this compares
$847,452 in reported general payments places this provider in the 95th percentile of 773 neurological 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 |
|---|---|---|
| Gabapentin | 28 | $551 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Stanford
- Stefan MindeaStanford$615K
- Michael LimStanford$325K
- Gerald GrantStanford$254K
- John RatliffStanford$223K
- John AdlerStanford$205K
- Christopher AmesSan Francisco$7.1M
- Larry KhooLos Angeles$2.8M
- Samy AbdouSan Diego$2.4M
- Bret AbshireMurrieta$2.3M
- William TaylorSan Diego$2.1M
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.