Kenneth Halliwell, MD
Neurology · Williamsville, NYNPI 1639338429
Payments from drug & device makers
Across 349 payments — averaging $574.09 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Harmony Biosciences LLC$91K
- Idorsia Pharmaceuticals US Inc$62K
- Avadel CNS Pharmaceuticals, LLC$40K
- Livanova USA, Inc.$5K
- Jazz Pharmaceuticals Inc.$927
- Inspire Medical Systems, Inc.$420
- plus $1K from 13 others
What the payments were for
- Consulting fees$4,9882%
- Speaking & faculty fees$163,65282%
- Travel & lodging$21,87411%
- Food & beverage$9,6445%
- Education$2000%
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 |
|---|---|---|
| Harmony Biosciences LLC | 101 | $90,956 |
| Idorsia Pharmaceuticals US Inc | 74 | $61,657 |
| Avadel CNS Pharmaceuticals, LLC | 57 | $40,060 |
| Livanova USA, Inc. | 37 | $5,222 |
| Jazz Pharmaceuticals Inc. | 37 | $927 |
| Inspire Medical Systems, Inc. | 8 | $420 |
| Axsome Therapeutics, Inc. | 15 | $313 |
| Amgen | 2 | $195 |
| Camber Spine Technologies LLC | 1 | $175 |
| Biohaven Pharmaceutical Holding Company Ltd. | 1 | $114 |
| Fisher & Paykel Healthcare Inc | 4 | $104 |
| Merck | 4 | $65 |
| Novo Nordisk | 2 | $34 |
| Lilly USA, LLC | 1 | $27 |
| 3b Medical, Inc. | 1 | $24 |
| Azurity Pharmaceuticals, Inc. | 1 | $19 |
| Teva Pharmaceuticals USA, Inc. | 1 | $17 |
| UCB, Inc. | 1 | $16 |
| GE HealthCare | 1 | $13 |
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.
- Wakix$89,964
- QUVIVIQ$60,735
- LUMRYZ$39,395
- VNS Therapy$3,897
- VNS THERAPY SENTIVA MODEL 1000 GENERATOR$504
- Inspire$213
- VNS - Sentiva$147
- XYWAV$136
- NURTEC ODT$114
- AIMOVIG$113
How this compares
$200,357 in reported general payments places this provider in the 90th 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 |
|---|---|---|
| XyremSodium Oxybate | 12 | $252,426 |
| XywavSodium,calcium,mag,pot Oxybate | 12 | $238,631 |
| Zaleplon | 19 | $730 |
| Modafinil | 16 | $452 |
| Zolpidem Tartrate | 27 | $446 |
| Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine | 13 | $220 |
| Clonidine Hcl | 12 | $43 |
Paid to pharmacies, not to this prescriber.
Other neurology in Williamsville
- Christian GrommesNew York$9.9M
- Ilya KisterNew York$9.5M
- E DorseyNew York$8.5M
- Lauren SchaffNew York$8.2M
- Richard HolubAlbany$6.3M
- Martin SadowskiNew York$5.4M
- Lawrence HonigNew York$4.9M
- Laszlo MechtlerAmherst$4.3M
- Bennett MyersAmherst$3.8M
- Krupa PandeyAlbany$3.8M
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.