Thomas Wisniewski, MD
Neurology · New York, NYNPI 1033103759
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $4,550 of the $5,488 with a category attached, or 82.9%. Grifols Shared Services North America, Inc. accounts for 94.4% of it on its own, with 3 other manufacturers making up the rest. Reporting peaked in 2019 at $3,564 and has fallen 99.2% since, to $30 in 2025.
Across 13 payments — averaging $422.19 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Grifols Shared Services North America, Inc.$5K
- Fresenius USA Marketing, Inc.$249
- AbbVie$30
- Acadia Pharmaceuticals Inc$29
Across 24 payments — averaging $13,462 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.
- Eli Lilly$203K
- Ionis Pharmaceuticals, Inc.$120K
What the payments were for
- Consulting fees$4,55083%
- Speaking & faculty fees$2495%
- Travel & lodging$2675%
- Food & beverage$4238%
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 |
|---|---|---|
| Grifols Shared Services North America, Inc. | 9 | $5,180 |
| Fresenius USA Marketing, Inc. | 1 | $249 |
| AbbVie | 1 | $30 |
| Acadia Pharmaceuticals Inc | 2 | $29 |
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.
- Albutein$4,550
- Flebogamma DIF$485
How this compares
$5,488 in reported general payments places this provider in the 70th percentile of 1,623 neurology 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 |
|---|---|---|
| Memantine Hcl ErMemantine Hcl | 199 | $23,079 |
| Rivastigmine | 46 | $8,329 |
| Donepezil Hcl | 301 | $4,576 |
| Memantine Hcl | 50 | $3,086 |
| Galantamine ErGalantamine Hbr | 11 | $1,861 |
| ValacyclovirValacyclovir Hcl | 17 | $1,780 |
| Escitalopram Oxalate | 129 | $1,522 |
| Divalproex Sodium | 15 | $633 |
| RivastigmineRivastigmine Tartrate | 17 | $525 |
| Quetiapine Fumarate | 27 | $437 |
| Trazodone Hcl | 18 | $297 |
| Clonazepam | 18 | $292 |
| Sertraline Hcl | 11 | $110 |
Paid to pharmacies, not to this prescriber.
Other neurology in New York
- Stephen KriegerNew York$1.1M
- Sheng-Han KuoNew York$657K
- Timothy VartanianNew York$468K
- Steven WolfNew York$428K
- David DodickNew York$426K
- David SimpsonNew York$403K
- Fred LublinNew York$383K
- Alexander ShtilbansNew York$374K
- Andrew LassmanNew York$359K
- Brian ApatoffNew York$295K
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.