Isaac Yang, MD
Neurological Surgery · San Francisco, CANPI 1669599197
Payments from drug & device makers
Across 161 payments — averaging $676.28 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Baxter Healthcare$59K
- Stryker$31K
- Medtronic$5K
- Brainlab, Inc.$2K
- GT Medical Technologies, Inc$2K
- Omniscient Neurotechnology America Ltd$2K
- plus $7K from 16 others
What the payments were for
- Consulting fees$14,08518%
- Speaking & faculty fees$10,53013%
- Travel & lodging$8,82911%
- Food & beverage$7,86810%
- Education$38,07048%
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 |
|---|---|---|
| Baxter Healthcare | 29 | $58,818 |
| Stryker | 16 | $30,981 |
| Medtronic(2 entities) | 45 | $5,432 |
| Brainlab, Inc. | 16 | $2,375 |
| GT Medical Technologies, Inc | 6 | $1,999 |
| Omniscient Neurotechnology America Ltd | 5 | $1,951 |
| GS Solutions, Inc. | 5 | $1,771 |
| Davol Inc. | 1 | $1,350 |
| Orthofix Medical, Inc. | 7 | $1,227 |
| Monteris Medical Corporation | 6 | $825 |
| Zap Surgical Systems, Inc. | 4 | $757 |
| Boston Scientific | 4 | $286 |
| NICO Corporation | 1 | $280 |
| Johnson & Johnson(2 entities) | 5 | $170 |
| Xoran Technologies LLC | 2 | $168 |
| Integra Lifesciences Corporation | 1 | $136 |
| BK Medical Holding Company Inc. | 1 | $130 |
| Globus Medical | 1 | $63 |
| Viseon, Inc. | 2 | $50 |
| Aesculap, Inc. | 1 | $48 |
| Elekta, Inc. | 1 | $33 |
| Lemaitre Vascular, Inc. | 2 | $31 |
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.
- TISSEEL$38,685
- No Related Product$13,770
- FLOSEAL$6,097
- STEALTHSTATION S8 PLATFORM$4,305
- GammaTile$1,921
- 7D Surgical FLASH Frame$1,180
- Image Guided Surgical Device$1,147
- Zap-X$675
- Neuroblate$579
- CORE$507
- Quicktome$403
- ADHERUS AUTOSPRAY ET DURAL SEALANT$313
- mild Device Kit$280
- ADHERUS AUTOSPRAY DURAL SEALANT$245
- NICO MYRIAD$173
- NICO BRAINPATH$173
- SONOPET IQ$167
- VISUALASE$150
- GENERAL PAIN MANAGEMENT$138
- CODMAN CERTAS$136
How this compares
$108,881 in reported general payments places this provider in the 80th 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.
Other neurological surgery in San Francisco
- Geoffrey ManleySan Francisco$24.9M
- Christopher AmesSan Francisco$7.1M
- Bruce McCormackSan Francisco$3.9M
- Jennie TaylorSan Francisco$2.7M
- Nicholas ButowskiSan Francisco$2.4M
- Luis SavastanoSan Francisco$1.7M
- Praveen MummaneniSan Francisco$1.1M
- Aaron ClarkSan Francisco$849K
- Lee TanSan Francisco$722K
- Jang YoonSan Francisco$371K
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.