William Clark, MD
Ophthalmology · West Columbia, SCNPI 1528057890
Payments from drug & device makers
Across 960 payments — averaging $6444.46 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Genentech, Inc.$3.4M
- Regeneron$769K
- Ocular Therapeutix, Inc.$686K
- Bayer$527K
- Regeneron Healthcare Solutions, Inc.$520K
- Genentech USA, Inc.$137K
- plus $99K from 18 others
Across 18 payments — averaging $1528.69 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$22K
- F. Hoffmann-la Roche AG$5K
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 |
|---|---|---|
| Genentech, Inc. | 120 | $3,449,781 |
| Regeneron | 133 | $768,657 |
| Ocular Therapeutix, Inc. | 118 | $685,868 |
| Bayer | 77 | $526,711 |
| Regeneron Healthcare Solutions, Inc. | 301 | $520,030 |
| Genentech USA, Inc. | 140 | $136,520 |
| Eyepoint US, Inc. | 4 | $81,412 |
| Amgen | 11 | $11,774 |
| Neurotech Pharmaceuticals, Inc. | 2 | $2,194 |
| ANI Pharmaceuticals, Inc. | 2 | $975 |
| Notal Vision, Inc. | 1 | $798 |
| Sandoz | 2 | $572 |
| AbbVie(2 entities) | 27 | $525 |
| Apellis Pharmaceuticals, Inc. | 4 | $312 |
| Mckesson Specialty Care Distribution, LLC | 2 | $187 |
| Astellas Pharma US Inc | 3 | $78 |
| Novartis | 4 | $75 |
| Mallinckrodt Hospital Products Inc. | 2 | $48 |
| Alimera Sciences, Inc. | 2 | $35 |
| Coherus Oncology, Inc. | 1 | $32 |
| Carl Zeiss Meditec USA, Inc. | 1 | $31 |
| Biogen | 1 | $24 |
| Bausch & Lomb Americas Inc. | 1 | $23 |
| Sun Pharmaceutical Industries Inc. | 1 | $16 |
How this compares
$6,186,677 in reported general payments places this provider in the 95th percentile of 293 ophthalmology 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.
Other ophthalmology in West Columbia
- John WellsWest Columbia$7.1M
- John PayneWest Columbia$574K
- Daniel AlfaroCharleston$4.6M
- Kerry SolomonMt Pleasant$4.6M
- Eric JablonCharleston$1.2M
- George WaringMt Pleasant$1M
- John KerrisonCharleston$975K
- Karolinne RochaCharleston$799K
- Mona CamacciCharleston$534K
- Gregg KaiserGreenville$387K
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.