Hao Tang
Retina Specialist · Charleston, SCNPI 1093058158
Payments from drug & device makers
What this record shows
The money is spread across several categories — grants (59.7%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. Regeneron accounts for 61.1% of it on its own, with 10 other manufacturers making up the rest. Reporting peaked in 2019 at $40,271 and has fallen 98.4% since, to $649 in 2025. Among retina specialist clinicians in SC 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 60 payments — averaging $1093.04 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Regeneron$40K
- Genentech USA, Inc.$14K
- AbbVie$10K
- Genentech, Inc.$384
- Astellas Pharma US Inc$308
- Apellis Pharmaceuticals, Inc.$261
- plus $541 from 5 others
What the payments were for
- Consulting fees$21,33533%
- Grants$39,17260%
- Travel & lodging$2,6904%
- Food & beverage$2,3854%
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 | 13 | $40,099 |
| Genentech USA, Inc. | 12 | $13,713 |
| AbbVie | 15 | $10,276 |
| Genentech, Inc. | 5 | $384 |
| Astellas Pharma US Inc | 4 | $308 |
| Apellis Pharmaceuticals, Inc. | 5 | $261 |
| Pulmonx Corporation | 1 | $169 |
| Regeneron Healthcare Solutions, Inc. | 2 | $150 |
| Alcon | 1 | $124 |
| Carl Zeiss Meditec, Inc. | 1 | $70 |
| Astellas Pharma Global Development | 1 | $27 |
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.
- VABYSMO$13,508
- OZURDEX$957
- CHARTIS CATHETER$169
- ZEPHYR DELIVERY CATHETER$169
- ZEPHYR ENDOBRONCHIAL VALVE$169
- PULMONX CHARTIS TABLET CONSOLE$169
- Syfovre$142
- SUSVIMO$141
- Izervay$130
- Constellation$124
- EYLEA HD$114
- Lucentis$102
How this compares
$65,583 in reported general payments places this provider in the 95th percentile of 20 retina specialist providers in South Carolina.
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 | 34 | $1,400 |
| Ketorolac Tromethamine | 44 | $730 |
| Dorzolamide Hcl | 13 | $286 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 16 | $241 |
| Timolol Maleate | 17 | $164 |
Paid to pharmacies, not to this prescriber.
Other retina specialist in Charleston
- Jeffrey BliceCharleston$3K
- Emil Anthony SayCharleston$1K
- Mauricio PereiraCharleston$425
- Carl BakerHilton Head Island$37K
- Adam PflugrathGreenville$13K
- Jeffrey GrossColumbia$7K
- Arman FarrRock Hill$5K
- Stephen HypesWest Columbia$5K
- James HallGreenville$4K
- Robert PrinziLittle River$4K
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.