Charles Lin, MD
Cornea and External Diseases Specialist · Stanford, CANPI 1780818161
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $3,364 of the $5,044 with a category attached, or 66.7%. 9 manufacturers reported payments, led by Alcon at 57.6% of the total. Reporting peaked in 2020 at $1,969 and has fallen 85.9% since, to $278 in 2025.
Across 66 payments — averaging $76.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alcon$3K
- Seagen Inc.$2K
- Johnson & Johnson Surgical Vision, Inc.$211
- Oyster Point Pharma, Inc.$70
- Shire North American Group Inc$56
- Biotissue Holdings Inc.$43
- plus $79 from 3 others
Across 28 payments — averaging $3674.52 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.
- Kowa Research Institute, Inc.$100K
- Takeda Pharmaceuticals U.S.A., Inc.$1K
- Shire North American Group Inc$1K
What the payments were for
- Consulting fees$1,68033%
- Food & beverage$3,36467%
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 |
|---|---|---|
| Alcon | 56 | $2,906 |
| Seagen Inc. | 1 | $1,680 |
| Johnson & Johnson Surgical Vision, Inc. | 3 | $211 |
| Oyster Point Pharma, Inc. | 1 | $70 |
| Shire North American Group Inc | 1 | $56 |
| Biotissue Holdings Inc. | 1 | $43 |
| Carl Zeiss Meditec, Inc. | 1 | $36 |
| Sight Sciences, Inc. | 1 | $24 |
| Abbott | 1 | $18 |
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.
- Clareon$653
- AcrySof IQ PanOptix$507
- Tecnis Simplicity$141
- ARGOS$141
- AcrySof IQ PanOptix UV IOL$136
- Centurion$122
How this compares
$5,044 in reported general payments places this provider in the 55th percentile of 50 cornea and external diseases specialist providers in California.
See all cornea and external diseases specialist 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 |
|---|---|---|
| Valganciclovir Hcl | 24 | $37,437 |
| Prednisolone Acetate | 427 | $22,406 |
| Loteprednol Etabonate | 83 | $14,550 |
| Fluorometholone | 66 | $4,858 |
| Difluprednate | 26 | $2,829 |
| ValacyclovirValacyclovir Hcl | 64 | $2,568 |
| Brimonidine Tartrate | 25 | $2,484 |
| Dorzolamide-TimololDorzolamide/Timolol/Pf | 14 | $2,287 |
| MoxifloxacinMoxifloxacin Hcl | 83 | $2,005 |
| Brimonidine Tartrate-TimololBrimonidine Tartrate/Timolol | 12 | $1,562 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 35 | $628 |
| Doxycycline Hyclate | 25 | $589 |
| Timolol Maleate | 43 | $498 |
| Latanoprost | 41 | $444 |
| Ofloxacin | 20 | $373 |
Paid to pharmacies, not to this prescriber.
Other cornea and external diseases specialist in Stanford
- Edward MancheStanford$78K
- David MyungStanford$4K
- Geoffrey TabinStanford$3K
- Charles YuStanford$2K
- Jennifer Rose-NussbaumerStanford$2K
- Bethlehem MekonnenStanford$1K
- Sumit GargIrvine$808K
- Jillian ChongBeverly Hills$113K
- Tyson KimSan Francisco$91K
- Michael SavetskyCulver City$63K
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.