Brian Chan Kai, MD
Retina Specialist · Portland, ORNPI 1578690566
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $116,363 of the $154,974 with a category attached, or 75.1%. 18 manufacturers reported payments, led by Regeneron Healthcare Solutions, Inc. at 37.3% of the total. 2025 is the largest year on record at $53,244, 3.4 times the $15,808 reported in 2019. Among retina specialist clinicians in OR with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 207 payments — averaging $748.67 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Regeneron Healthcare Solutions, Inc.$58K
- Apellis Pharmaceuticals, Inc.$39K
- AbbVie$19K
- Novartis$15K
- Genentech USA, Inc.$11K
- Baxter Healthcare$5K
- plus $8K from 12 others
Across 109 payments — averaging $6253.20 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Apellis Pharmaceuticals, Inc.$202K
- Roche TCRC, Inc.$201K
- Genentech, Inc.$69K
- AstraZeneca$65K
- Ocular Therapeutix, Inc.$55K
- Regeneron$44K
- plus $45K from 3 others
What the payments were for
- Consulting fees$24,91616%
- Speaking & faculty fees$116,36375%
- Travel & lodging$6,9564%
- Food & beverage$6,7194%
- Education$210%
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 |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | 35 | $57,822 |
| Apellis Pharmaceuticals, Inc. | 42 | $38,946 |
| AbbVie(2 entities) | 30 | $18,914 |
| Novartis | 11 | $15,120 |
| Genentech USA, Inc. | 25 | $11,044 |
| Baxter Healthcare | 24 | $5,100 |
| Harrow Eye, LLC | 4 | $3,523 |
| Genentech, Inc. | 12 | $2,065 |
| Astellas Pharma US Inc | 8 | $720 |
| Alcon | 3 | $470 |
| Bausch & Lomb Americas Inc. | 2 | $309 |
| Regeneron | 4 | $212 |
| Ocular Therapeutix, Inc. | 2 | $173 |
| Alimera Sciences, Inc. | 1 | $154 |
| Cardinal Health 110 LLC | 1 | $150 |
| ANI Pharmaceuticals, Inc. | 1 | $119 |
| Sandoz | 1 | $79 |
| Topcon Healthcare, Inc. | 1 | $52 |
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
$154,974 in reported general payments places this provider in the 95th percentile of 36 retina specialist providers in Oregon.
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 |
|---|---|---|
| Prednisolone Acetate | 104 | $5,867 |
| MoxifloxacinMoxifloxacin Hcl | 46 | $1,233 |
| Eplerenone | 15 | $1,043 |
| Ketorolac Tromethamine | 18 | $410 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 13 | $268 |
| Brimonidine Tartrate | 13 | $236 |
| Diclofenac Sodium | 20 | $194 |
| Latanoprost | 19 | $181 |
| Timolol Maleate | 16 | $120 |
Paid to pharmacies, not to this prescriber.
Other retina specialist in Portland
- Brandon LujanPortland$33K
- Andreas LauerPortland$17K
- Sirichai PasadhikaPortland$6K
- David WilsonPortland$5K
- Harpal SandhuPortland$3K
- Aristomenis ThanosPortland$3K
- Michael LeePortland$3K
- Paul TlucekPortland$2K
- Kavita BhavsarPortland$2K
- Apurva PatelPortland$2K
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.