Mark Kleinman, MD
Retina Specialist · Kingsport, TNNPI 1063676310
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $14,405 of the $18,011 with a category attached, or 80.0%. Regeneron accounts for 79.7% of it on its own, with 15 other manufacturers making up the rest. 2025 is the largest year on record at $14,457, more than ten times the $57 reported in 2019.
Across 64 payments — averaging $281.42 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Regeneron$14K
- Apellis Pharmaceuticals, Inc.$2K
- Regeneron Healthcare Solutions, Inc.$414
- Alcon$276
- Genentech USA, Inc.$218
- Alimera Sciences, Inc.$199
- plus $258 from 10 others
Across 11 payments — averaging $6894.43 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.
- Ocular Therapeutix, Inc.$65K
- Astellas Pharma Global Development$8K
- Eyepoint US, Inc.$3K
What the payments were for
- Consulting fees$14,40580%
- Travel & lodging$1,80510%
- Food & beverage$1,80110%
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 | 16 | $14,356 |
| Apellis Pharmaceuticals, Inc. | 4 | $2,290 |
| Regeneron Healthcare Solutions, Inc. | 11 | $414 |
| Alcon | 3 | $276 |
| Genentech USA, Inc. | 11 | $218 |
| Alimera Sciences, Inc. | 6 | $199 |
| AbbVie | 3 | $52 |
| Carl Zeiss Meditec USA, Inc. | 2 | $42 |
| Bausch & Lomb, A Division Of Bausch Health US, LLC | 1 | $24 |
| Sandoz | 1 | $23 |
| Bausch & Lomb Americas Inc. | 1 | $22 |
| Astellas Pharma US Inc | 1 | $22 |
| Coherus Oncology, Inc. | 1 | $21 |
| Biogen | 1 | $20 |
| Novartis | 1 | $19 |
| Mallinckrodt Hospital Products Inc. | 1 | $12 |
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.
How this compares
$18,011 in reported general payments places this provider in the 75th percentile of 58 retina specialist providers in Tennessee.
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 | 722 | $39,192 |
| Loteprednol Etabonate | 30 | $5,429 |
| SimbrinzaBrinzolamide/Brimonidine Tart | 24 | $4,891 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 333 | $4,705 |
| Eplerenone | 20 | $3,336 |
| Brimonidine Tartrate | 194 | $3,261 |
| Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha | 173 | $2,170 |
| Difluprednate | 21 | $2,126 |
| Latanoprost | 178 | $1,626 |
| Dorzolamide-TimololDorzolamide/Timolol/Pf | 16 | $1,623 |
| Polymyxin B Sul-TrimethoprimPolymyxin B Sulf/Trimethoprim | 162 | $1,316 |
| Atropine Sulfate | 14 | $616 |
| MoxifloxacinMoxifloxacin Hcl | 14 | $504 |
| Dorzolamide Hcl | 18 | $318 |
| Timolol Maleate | 22 | $201 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Bausch & Lomb, A Division Of Bausch Health US, LLCLoteprednol Etabonate | $24 | $5,42930 claims |
| AlconSimbrinza | $276 | $4,89124 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 75th percentile of 58 retina specialist providers in Tennessee.
Other retina specialist in Kingsport
- Joseph GunnKingsport$2K
- Howard CummingsKingsport$2K
- Cristoforo LarzoKingsport$1K
- Michael MageeKingsport$901
- Steve CharlesGermantown$5.8M
- Carl AwhNashville$1.3M
- Peter SonkinNashville$949K
- Brandon BusbeeNashville$566K
- Eric SchneiderNashville$134K
- David ReichsteinNashville$114K
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.