Dan Gong, MD
Ophthalmology · Boston, MANPI 1346621596
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $2,996 of the $3,657 with a category attached, or 81.9%. Alcon accounts for 71.9% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2019 at $1,681 and has fallen 80.1% since, to $334 in 2025.
Across 32 payments — averaging $114.27 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alcon$3K
- Genentech USA, Inc.$611
- Neurotech Pharmaceuticals, Inc.$155
- Genentech, Inc.$128
- Regeneron$107
- Inspire Medical Systems, Inc.$24
Across 30 payments — averaging $3469.57 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.
- Sumitomo Pharma America, Inc.$104K
What the payments were for
- Travel & lodging$66118%
- Food & beverage$2,99682%
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 | 15 | $2,630 |
| Genentech USA, Inc. | 8 | $611 |
| Neurotech Pharmaceuticals, Inc. | 1 | $155 |
| Genentech, Inc. | 6 | $128 |
| Regeneron | 1 | $107 |
| Inspire Medical Systems, Inc. | 1 | $24 |
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.
- Constellation$585
- VABYSMO$499
- DAILIES$407
- EYLEA$107
How this compares
$3,657 in reported general payments places this provider in the 75th percentile of 653 ophthalmology providers in Massachusetts.
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 | 169 | $5,482 |
| Bromfenac Sodium | 24 | $5,163 |
| Difluprednate | 75 | $4,988 |
| Ketorolac Tromethamine | 122 | $2,015 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 43 | $836 |
| Latanoprost | 61 | $790 |
| Mycophenolate Mofetil | 11 | $477 |
| Dorzolamide Hcl | 22 | $387 |
| Brimonidine Tartrate | 28 | $282 |
| ErythromycinErythromycin Base | 16 | $154 |
| Timolol Maleate | 11 | $101 |
Paid to pharmacies, not to this prescriber.
Other ophthalmology in Boston
- Rishi SinghBoston$1.7M
- Adam RogersBoston$316K
- Bonnie HendersonBoston$279K
- Dean EliottBoston$250K
- Mina FarahaniBoston$227K
- Jia YinBoston$173K
- John MillerBoston$106K
- Elizabeth RossinBoston$101K
- Suzanne FreitagBoston$96K
- Nimesh PatelBoston$94K
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.