Max Kahn, MD
Neurological Surgery · Santa Monica, CANPI 1053793315
Payments from drug & device makers
What this record shows
This record is dominated by grants: $25,000 of the $30,094 with a category attached, or 83.1%. 12 manufacturers reported payments, led by Abbott at 49.8% of the total. Reporting peaked in 2022 at $15,436 and has fallen 93.2% since, to $1,056 in 2025.
Across 68 payments — averaging $442.56 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Abbott$15K
- Medtronic$12K
- Globus Medical$1K
- Zavation Medical Products, LLC$499
- Prism Medical$276
- Si-bone, Inc.$241
- plus $1K from 6 others
What the payments were for
- Grants$25,00083%
- Travel & lodging$6502%
- Food & beverage$4,44415%
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 |
|---|---|---|
| Abbott | 1 | $15,000 |
| Medtronic(2 entities) | 20 | $11,647 |
| Globus Medical(2 entities) | 20 | $1,331 |
| Zavation Medical Products, LLC | 1 | $499 |
| Prism Medical | 2 | $276 |
| Si-bone, Inc. | 3 | $241 |
| Aesculap Implant Systems, LLC | 5 | $235 |
| Johnson & Johnson | 2 | $233 |
| Arthrex | 5 | $219 |
| Orthofix Medical, Inc. | 3 | $176 |
| Alphatec Spine, Inc | 4 | $171 |
| Icotec Medical Inc. | 2 | $66 |
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.
- SYNCHROMEDII$10,000
- MAZOR X SYSTEM$562
- UNID_PASS$216
- INTELLIS ADAPTIVESTIM$160
- ENNOVATE SPINAL SYSTEM$140
- ACTIVL ARTIFICIAL DISC$140
- SYMPHONY$130
- ExcelsiusGPS Robotic Navigation System$118
- ALTERA$118
- XLIF$118
- VIPER$103
- CONDUIT$103
How this compares
$30,094 in reported general payments places this provider in the 75th 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 Santa Monica
- Daniel KellySanta Monica$477K
- Amir VokshoorSanta Monica$292K
- Daniel LuSanta Monica$243K
- Christopher AmesSan Francisco$7.1M
- Larry KhooLos Angeles$2.8M
- Samy AbdouSan Diego$2.4M
- Bret AbshireMurrieta$2.3M
- William TaylorSan Diego$2.1M
- Tooraj GravoriEncino$2M
- Ali MesiwalaRancho Cucamonga$1.5M
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.