Winward Choy, MD
Neurological Surgery · Los Angeles, CANPI 1174056485
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $7,172 of the $11,778 with a category attached, or 60.9%. 9 manufacturers reported payments, led by Alphatec Spine, Inc at 30.3% of the total. 2025 is the largest year on record at $5,610, 4.1 times the $1,360 reported in 2021.
Across 62 payments — averaging $189.98 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alphatec Spine, Inc$4K
- Medtronic$3K
- Si-bone, Inc.$2K
- Globus Medical$1K
- Carlsmed, Inc.$1K
- Stryker$571
- plus $230 from 3 others
What the payments were for
- Travel & lodging$7,17261%
- Food & beverage$4,52638%
- Education$811%
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 |
|---|---|---|
| Alphatec Spine, Inc | 15 | $3,567 |
| Medtronic | 20 | $2,512 |
| Si-bone, Inc. | 8 | $2,407 |
| Globus Medical(2 entities) | 5 | $1,454 |
| Carlsmed, Inc. | 5 | $1,037 |
| Stryker | 6 | $571 |
| Riwospine, Inc. | 1 | $87 |
| Osteomed LLC | 1 | $81 |
| Olympus America Inc. | 1 | $62 |
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.
- Other - Miscellaneous$1,900
- IFUSE IMPLANT SYSTEM$1,781
- Excelsius - GPS$1,150
- CD HORIZON$936
- aprevo$919
- BIOLOGICS$433
- ADHERUS AUTOSPRAY DURAL SEALANT$317
- UNID_PASS$313
- ADHERUS AUTOSPRAY ET DURAL SEALANT$267
- LIF$210
- Battalion TLIF - PC$183
- SONOPET IQ$174
- Mazor X Stealth Edition$165
- Pulse$111
How this compares
$11,778 in reported general payments places this provider in the 65th 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 |
|---|---|---|
| Oxycodone Hcl | 13 | $69 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Los Angeles
- Larry KhooLos Angeles$2.8M
- Aaron Cohen-GadolLos Angeles$1.3M
- Geoffrey ColbyLos Angeles$1.1M
- Langston HollyLos Angeles$846K
- Linda LiauLos Angeles$783K
- Adam MamelakLos Angeles$678K
- Martin PhamLos Angeles$596K
- Carl LauryssenLos Angeles$571K
- Vivek MehtaLos Angeles$442K
- Patrick HsiehLos Angeles$345K
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.