Brian Chen, MD
Ophthalmology · San Gabriel, CANPI 1952631632
Payments from drug & device makers
Across 89 payments — averaging $58.98 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$2K
- Glaukos Corporation$1K
- Bausch & Lomb Americas Inc.$939
- Nova Eye, Inc.$338
- Bausch & Lomb, A Division Of Bausch Health US, LLC$316
- Amgen$197
- plus $705 from 9 others
What the payments were for
- Food & beverage$5,15998%
- Gifts$902%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| AbbVie(2 entities) | 31 | $1,706 |
| Glaukos Corporation | 9 | $1,048 |
| Bausch & Lomb Americas Inc. | 11 | $939 |
| Nova Eye, Inc. | 1 | $338 |
| Bausch & Lomb, A Division Of Bausch Health US, LLC | 6 | $316 |
| Amgen(2 entities) | 8 | $197 |
| Beaver-visitec International, Inc. | 1 | $168 |
| Sun Pharmaceutical Industries Inc. | 5 | $114 |
| Aerie Pharmaceuticals, Inc. | 5 | $100 |
| CSL Behring | 4 | $88 |
| E.r. Squibb & Sons, L.L.C. | 1 | $73 |
| Alcon | 3 | $62 |
| Mallinckrodt Hospital Products Inc. | 2 | $56 |
| Novartis | 1 | $24 |
| Johnson & Johnson Surgical Vision, Inc. | 1 | $20 |
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.
- enVista MX60 IOL$563
- AMVISC$563
- XEN GLAUCOMA TREATMENT SYSTEM$542
- iStent inject Trabecular Micro-Bypass Stent System$417
- iStent Trabecular Micro-Bypass Stent System$276
- XEN$261
- iStent inject W$232
- iStent Trabecular Micro-Bypass System Model iS3$178
- iStent Infinite$153
- iDoseTR$153
- KXL System$128
- Photrexa$128
- LOTEMAX SM$125
- VYZULTA$121
- IACCESS$104
How this compares
$5,249 in reported general payments places this provider in the 75th percentile of 2,513 ophthalmology 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 |
|---|---|---|
| RestasisCyclosporine | 140 | $103,499 |
| LumiganBimatoprost | 212 | $79,963 |
| Prednisolone Acetate | 1,032 | $56,223 |
| RhopressaNetarsudil Mesylate | 148 | $56,162 |
| Cyclosporine | 102 | $30,858 |
| Alphagan PBrimonidine Tartrate | 97 | $30,504 |
| CombiganBrimonidine Tartrate/Timolol | 60 | $24,239 |
| Ketorolac Tromethamine | 998 | $20,203 |
| Brimonidine Tartrate | 1,043 | $18,079 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 1,010 | $17,392 |
| Latanoprost | 2,642 | $17,098 |
| Travoprost | 109 | $16,612 |
| SimbrinzaBrinzolamide/Brimonidine Tart | 55 | $14,216 |
| RocklatanNetarsudil Mesylat/Latanoprost | 38 | $12,086 |
| Brinzolamide | 62 | $10,295 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AbbVieRestasis, Lumigan, Alphagan P, Combigan | $1,706 | $238,205509 claims |
| Aerie Pharmaceuticals, Inc.Rhopressa, Rocklatan | $100 | $68,248186 claims |
| Bausch & Lomb Americas Inc.Xiidra, Vyzulta | $939 | $16,25431 claims |
| AlconSimbrinza | $62 | $14,21655 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 75th percentile of 2,513 ophthalmology providers in California.
Other ophthalmology in San Gabriel
- Nisha AcharyaSan Francisco$33M
- David WirtaNewport Beach$18.4M
- Michael IpPasadena$10.2M
- Raymond DouglasBeverly Hills$9.7M
- Sherif El HaraziGlendale$9.2M
- Daniel SchwartzSan Francisco$8M
- Nikolas Londonla Jolla$6.1M
- Michael BerlinWest Hollywood$5.7M
- Steven JacobsonLos Angeles$4.7M
- Peter WinArcadia$4.2M
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.