David Johnson, MD
Retina Specialist · West Columbia, SCNPI 1811942527
Payments from drug & device makers
Across 830 payments — averaging $1655.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Regeneron$934K
- Ocular Therapeutix, Inc.$439K
- Genentech USA, Inc.$208
- Regeneron Healthcare Solutions, Inc.$155
- AbbVie$109
- Biogen$80
- plus $202 from 6 others
What the payments were for
- Food & beverage$851100%
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 |
|---|---|---|
| Regeneron | 739 | $933,996 |
| Ocular Therapeutix, Inc. | 56 | $438,979 |
| Genentech USA, Inc. | 11 | $208 |
| Regeneron Healthcare Solutions, Inc. | 6 | $155 |
| AbbVie(2 entities) | 5 | $109 |
| Biogen | 4 | $80 |
| Astellas Pharma US Inc | 2 | $53 |
| Novartis | 3 | $45 |
| Johnson & Johnson Surgical Vision, Inc. | 1 | $39 |
| Boston Scientific | 1 | $28 |
| Coherus Oncology, Inc. | 1 | $23 |
| Alimera Sciences, Inc. | 1 | $14 |
How this compares
$1,373,729 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 | 96 | $4,069 |
| Atropine Sulfate | 34 | $1,198 |
| Ketorolac Tromethamine | 24 | $564 |
| Ofloxacin | 42 | $462 |
| Timolol Maleate | 16 | $79 |
Paid to pharmacies, not to this prescriber.
Other retina specialist in West Columbia
- Nitin NigamWest Columbia$35K
- Stephen HypesWest Columbia$5K
- Daniel WillWest Columbia$1K
- Carl BakerHilton Head Island$355K
- Hao TangCharleston$66K
- Adam PflugrathGreenville$13K
- Jeffrey GrossColumbia$7K
- Arman FarrRock Hill$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.