David Clark, MD
Neurology · Overland Park, KSNPI 1629230479
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 93.4% of the total across 1,234 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 60 manufacturers, the largest accounting for just 9.6% — the pattern of someone who eats at a lot of different presentations.
Across 1,234 payments — averaging $17.64 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$2K
- Sanofi$2K
- Biogen$1K
- Novartis$1K
- UCB, Inc.$1K
- Teva Pharmaceuticals USA, Inc.$1K
- plus $12K from 54 others
What the payments were for
- Speaking & faculty fees$1,3916%
- Food & beverage$20,32693%
- Education$450%
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.
How this compares
$21,762 in reported general payments places this provider in the 85th percentile of 131 neurology providers in Kansas.
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 |
|---|---|---|
| FirdapseAmifampridine Phosphate | 26 | $1,290,885 |
| SolirisEculizumab | 25 | $1,272,357 |
| NexviazymeAvalglucosidase Alfa-Ngpt | 25 | $907,478 |
| Gamunex-CImmune Globul G/Gly/Iga Avg 46 | 89 | $583,418 |
| HizentraImmun Glob G(Igg)/Pro/Iga 0-50 | 35 | $426,501 |
| GammaplexImmun Glob G(Igg)/Gly/Iga 0-50 | 19 | $356,262 |
| XywavSodium,calcium,mag,pot Oxybate | 12 | $244,190 |
| CuvitruImmun Glob G(Igg)/Gly/Iga Ov50 | 33 | $188,254 |
| BriviactBrivaracetam | 36 | $71,925 |
| UbrelvyUbrogepant | 26 | $35,107 |
| Nurtec OdtRimegepant Sulfate | 19 | $29,339 |
| Aimovig AutoinjectorErenumab-Aooe | 19 | $24,052 |
| FycompaPerampanel | 13 | $18,720 |
| QuliptaAtogepant | 11 | $11,567 |
| Pyridostigmine Bromide ErPyridostigmine Bromide | 25 | $10,909 |
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 |
|---|---|---|
| Catalyst Pharmaceuticals, Inc.Firdapse | $461 | $1,290,88526 claims |
| AstraZenecaSoliris | $844 | $1,272,35725 claims |
| SanofiNexviazyme | $1,743 | $907,47825 claims |
| Grifols USA, LLCGamunex-C | $370 | $583,41889 claims |
| CSL BehringHizentra | $137 | $426,50135 claims |
| Bio Products Laboratory USA, Inc.Gammaplex | $40 | $356,26219 claims |
| Takeda Pharmaceuticals U.S.A., Inc.Cuvitru | $153 | $188,25433 claims |
| UCB, Inc.Briviact | $1,383 | $71,92536 claims |
| AbbVieUbrelvy, Qulipta | $2,079 | $46,67337 claims |
| PfizerNurtec Odt, Dilantin | $633 | $32,30331 claims |
| Eisai Inc.Fycompa | $26 | $18,72013 claims |
| Amneal Pharmaceuticals LLCPyridostigmine Bromide, Mycophenolate Mofetil | $358 | $5,86558 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 85th percentile of 131 neurology providers in Kansas.
Other neurology in Overland Park
- Stacy YoungerOverland Park$22K
- John SeeleyOverland Park$11K
- Laura ReillyOverland Park$5K
- Phaedra DowellOverland Park$3K
- Ivan OsorioKansas City$101.7M
- Jeffrey KaplanLenexa$1.9M
- Rajesh PahwaKansas City$889K
- Sheetal MalikTopeka$137K
- Richard DubinskyKansas City$122K
- Barbara Jean OttleyHays$116K
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.