David Johnson, MD
Retina Specialist · West Columbia, SCNPI 1811942527
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 36 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 11 manufacturers reported payments, led by Genentech USA, Inc. at 24.5% of the total. That places this record below the midpoint for retina specialist clinicians in SC, where the typical reported total is $2,421.
Across 36 payments — averaging $23.64 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Genentech USA, Inc.$208
- Regeneron Healthcare Solutions, Inc.$155
- AbbVie$109
- Ocular Therapeutix, Inc.$97
- Biogen$80
- Astellas Pharma US Inc$53
- plus $149 from 5 others
Across 794 payments — averaging $1729.07 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$934K
- Ocular Therapeutix, Inc.$439K
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 |
|---|---|---|
| Genentech USA, Inc. | 11 | $208 |
| Regeneron Healthcare Solutions, Inc. | 6 | $155 |
| AbbVie(2 entities) | 5 | $109 |
| Ocular Therapeutix, Inc. | 1 | $97 |
| 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
$851 in reported general payments places this provider in the 20th 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
- Stephen HypesWest Columbia$5K
- Nitin NigamWest Columbia$2K
- Daniel WillWest Columbia$1K
- Hao TangCharleston$66K
- Carl BakerHilton Head Island$37K
- 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.