Diana Do, MD
Retina Specialist · Stanford, CANPI 1245270313
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $250,735 of the $318,037 with a category attached, or 78.8%. It is spread thinly across 23 manufacturers, the largest accounting for just 21.0%. Among retina specialist clinicians in CA 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 246 payments — averaging $1292.83 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Regeneron$67K
- Regeneron Healthcare Solutions, Inc.$64K
- Apellis Pharmaceuticals, Inc.$27K
- Aerie Pharmaceuticals, Inc.$23K
- Novartis$19K
- Ocular Therapeutix, Inc.$17K
- plus $101K from 17 others
Across 64 payments — averaging $3279.76 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.
- Regeneron$104K
- Ocular Therapeutix, Inc.$60K
- Novartis$41K
- F. Hoffmann-la Roche AG$5K
What the payments were for
- Consulting fees$250,73579%
- Speaking & faculty fees$26,8538%
- Travel & lodging$32,45710%
- Food & beverage$7,9733%
- Gifts$190%
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 | 54 | $66,743 |
| Regeneron Healthcare Solutions, Inc. | 35 | $64,061 |
| Apellis Pharmaceuticals, Inc. | 12 | $27,345 |
| Aerie Pharmaceuticals, Inc. | 11 | $22,917 |
| Novartis | 8 | $19,232 |
| Ocular Therapeutix, Inc. | 13 | $16,982 |
| Novartis Pharma AG | 2 | $14,863 |
| AbbVie(2 entities) | 20 | $14,546 |
| F. Hoffmann-la Roche AG | 10 | $14,246 |
| Boehringer Ingelheim | 11 | $12,074 |
| Genentech, Inc. | 13 | $10,067 |
| Alcon | 6 | $7,990 |
| Boehringer Ingelheim International GmbH | 1 | $6,300 |
| Biogen | 3 | $5,177 |
| Eyepoint US, Inc. | 6 | $4,932 |
| Bausch & Lomb Americas Inc. | 12 | $3,808 |
| Astellas Pharma US Inc | 12 | $3,083 |
| Harrow Eye, LLC | 2 | $2,937 |
| Mallinckrodt Hospital Products Inc. | 11 | $425 |
| Astellas Pharma Global Development | 1 | $137 |
| Alimera Sciences, Inc. | 1 | $125 |
| Mallinckrodt Enterprises LLC | 1 | $29 |
| Carl Zeiss Meditec AG | 1 | $19 |
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
$318,037 in reported general payments places this provider in the 95th percentile of 187 retina 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 |
|---|---|---|
| Prednisolone Acetate | 22 | $1,050 |
| Ketorolac Tromethamine | 40 | $529 |
| Brimonidine Tartrate | 21 | $503 |
| Azelastine Hcl | 17 | $352 |
| Latanoprost | 37 | $293 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 20 | $158 |
Paid to pharmacies, not to this prescriber.
Other retina specialist in Stanford
- Ehsan RahimyStanford$1.5M
- Theodore LengStanford$223K
- Charles DeboerStanford$79K
- Prithvi MruthyunjayaStanford$74K
- Mary HartnettStanford$73K
- Dilsher DhootSanta Barbara$1.9M
- Darius MoshfeghiPalo Alto$1.4M
- Nathan SteinleSanta Barbara$1.1M
- Roger GoldbergWalnut Creek$1.1M
- Baruch KuppermannIrvine$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.