Vivien Chan, MD
Orthopaedic Surgery of the Spine · Los Angeles, CANPI 1508564014
Payments from drug & device makers
Across 32 payments — averaging $675.22 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Abbott$20K
- Globus Medical$915
- Medtronic$508
- Cerapedics Inc.$76
- Alphatec Spine, Inc$55
- Baxter Healthcare$54
What the payments were for
- Grants$20,00093%
- Food & beverage$1,6077%
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 | $20,000 |
| Globus Medical(2 entities) | 22 | $915 |
| Medtronic | 5 | $508 |
| Cerapedics Inc. | 1 | $76 |
| Alphatec Spine, Inc | 2 | $55 |
| Baxter Healthcare | 1 | $54 |
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.
How this compares
$21,607 in reported general payments places this provider in the 50th percentile of 288 orthopaedic surgery of the spine providers in California.
See all orthopaedic surgery of the spine 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 | 14 | $114 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery of the spine in Los Angeles
- Neelakantan AnandLos Angeles$3.2M
- Jeffrey WangLos Angeles$1.4M
- Brian PerriLos Angeles$1.2M
- Raymond HahLos Angeles$890K
- Ram AlluriLos Angeles$216K
- Hyun BaeSanta Monica$62.2M
- Choll KimSan Diego$4M
- Stacey BedermanOrange$3.7M
- Gregory Mundisla Jolla$3.5M
- Paul SlosarDaly City$3.1M
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.