Marshall Keilson, MD
Neuromusculoskeletal Medicine, Sports Medicine · Brooklyn, NYNPI 1528068954
Payments from drug & device makers
Across 453 payments — averaging $18.60 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novartis$1K
- Bristol Myers Squibb$720
- Biogen$686
- AbbVie$648
- Sunovion Pharmaceuticals Inc.$374
- Eisai Inc.$370
- plus $5K from 40 others
What the payments were for
- Consulting fees$1502%
- Speaking & faculty fees$1782%
- Food & beverage$8,07596%
- Education$240%
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.
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.
- TYSABRI$150
How this compares
$8,428 in reported general payments places this provider in the 90th percentile of 21 neuromusculoskeletal medicine, sports medicine providers in New York.
See all neuromusculoskeletal medicine, sports medicine providers in New York →
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 |
|---|---|---|
| AubagioTeriflunomide | 16 | $212,003 |
| PrivigenImmun Glob G(Igg)/Pro/Iga 0-50 | 22 | $142,654 |
| NuplazidPimavanserin Tartrate | 23 | $137,153 |
| AptiomEslicarbazepine Acetate | 72 | $115,225 |
| TecfideraDimethyl Fumarate | 12 | $105,898 |
| CopaxoneGlatiramer Acetate | 14 | $84,009 |
| Glatiramer Acetate | 20 | $33,146 |
| RexultiBrexpiprazole | 21 | $31,380 |
| FingolimodFingolimod Hcl | 21 | $27,415 |
| RytaryCarbidopa/Levodopa | 26 | $22,391 |
| Rufinamide | 12 | $18,293 |
| Levetiracetam | 438 | $16,710 |
| Oxtellar XrOxcarbazepine | 21 | $14,788 |
| FycompaPerampanel | 11 | $14,286 |
| Divalproex Sodium | 232 | $14,113 |
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 |
|---|---|---|
| SanofiAubagio | $255 | $212,00316 claims |
| CSL BehringPrivigen | $41 | $142,65422 claims |
| Acadia Pharmaceuticals IncNuplazid | $104 | $137,15323 claims |
| Sunovion Pharmaceuticals Inc.Aptiom | $374 | $115,22572 claims |
| BiogenTecfidera | $686 | $105,89812 claims |
| Teva Pharmaceuticals USA, Inc.Copaxone | $16 | $84,00914 claims |
| Otsuka America Pharmaceutical, Inc.Rexulti | $17 | $31,38021 claims |
| Amneal Pharmaceuticals LLCRytary | $20 | $22,39126 claims |
| Eisai Inc.Fycompa | $370 | $14,28611 claims |
| PfizerDilantin | $232 | $5,94329 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 90th percentile of 21 neuromusculoskeletal medicine, sports medicine providers in New York.
Other neuromusculoskeletal medicine, sports medicine in Brooklyn
- Anatoly PismanBrooklyn$141
- Andrew RussoBrooklyn$122
- Pierre Jean FelixBrooklyn$16
- Jai PerumalNew York$235K
- David DinesUniondale$166K
- Tracy OnalEast Islip$8K
- Aric HausknechtNew York$3K
- Brian NeriEast Meadow$3K
- Craig TitleNew York$889
- Libi GalmerJackson Heights$861
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.