David Chaar, MD
Neurology · Sherman, TXNPI 1417454356
Payments from drug & device makers
Across 133 payments — averaging $25.02 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- UCB, Inc.$429
- Pfizer$269
- AbbVie$235
- Lilly USA, LLC$231
- Johnson & Johnson$186
- Lundbeck LLC$152
- plus $2K from 26 others
What the payments were for
- Food & beverage$3,313100%
- Education$150%
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.
| Company | Payments | Total |
|---|---|---|
| UCB, Inc. | 14 | $429 |
| Pfizer | 15 | $269 |
| AbbVie | 17 | $235 |
| Lilly USA, LLC | 9 | $231 |
| Johnson & Johnson | 4 | $186 |
| Lundbeck LLC | 9 | $152 |
| Teva Pharmaceuticals USA, Inc. | 2 | $151 |
| Biogen | 3 | $150 |
| SK Life Science, Inc. | 6 | $143 |
| Kyowa Kirin, Inc. | 2 | $136 |
| Argenx US, Inc. | 5 | $135 |
| Amgen | 5 | $124 |
| AstraZeneca(2 entities) | 5 | $111 |
| EMD Serono, Inc. | 1 | $107 |
| Novartis | 6 | $97 |
| Amneal Pharmaceuticals LLC | 4 | $79 |
| Acadia Pharmaceuticals Inc | 4 | $69 |
| Axsome Therapeutics, Inc. | 2 | $57 |
| Sumitomo Pharma America, Inc. | 3 | $55 |
| Eisai Inc. | 2 | $50 |
| Abbott | 2 | $45 |
| Tanabe Pharma America, Inc. | 2 | $42 |
| Jazz Pharmaceuticals Inc. | 1 | $38 |
| Merz Pharmaceuticals, LLC | 1 | $38 |
| Neurocrine Biosciences, Inc. | 2 | $35 |
| Biotronik NRO, Inc. | 1 | $32 |
| Alnylam Pharmaceuticals Inc. | 1 | $31 |
| Ipsen Biopharmaceuticals, Inc | 1 | $27 |
| Genentech USA, Inc. | 1 | $24 |
| Livanova USA, Inc. | 1 | $19 |
| Cycle Pharmaceuticals Inc | 1 | $17 |
| Sarepta Therapeutics, Inc. | 1 | $16 |
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
$3,328 in reported general payments places this provider in the 50th percentile of 1,246 neurology providers in Texas.
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 |
|---|---|---|
| Gammagard LiquidImmun Glob G(Igg)/Gly/Iga Ov50 | 12 | $61,341 |
| UbrelvyUbrogepant | 25 | $37,878 |
| QuliptaAtogepant | 27 | $29,200 |
| Emgality SyringeGalcanezumab-Gnlm | 16 | $11,564 |
| Lacosamide | 30 | $10,044 |
| Topiramate ErTopiramate | 18 | $8,612 |
| Mycophenolate Mofetil | 22 | $5,775 |
| Memantine Hcl | 161 | $3,832 |
| Rivastigmine | 12 | $3,611 |
| Pregabalin | 87 | $2,896 |
| Donepezil Hcl | 283 | $2,489 |
| Gabapentin | 128 | $2,160 |
| AmantadineAmantadine Hcl | 39 | $1,900 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 76 | $1,723 |
| Pyridostigmine Bromide | 23 | $1,607 |
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 |
|---|---|---|
| AbbVieUbrelvy, Qulipta | $235 | $67,07952 claims |
| Amneal Pharmaceuticals LLCMycophenolate Mofetil, Pyridostigmine Bromide | $79 | $7,38245 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 50th percentile of 1,246 neurology providers in Texas.
Other neurology in Sherman
- Bharathy SundaramSherman$7.2M
- Ann BassSan Antonio$12.3M
- Kandasami SenthilkumarBeaumont$7.6M
- Bhupesh DiheniaLubbock$6.9M
- Jamshid LotfiHouston$6M
- Nazanin MajdHouston$5.9M
- Aziz ShaibaniHouston$5.5M
- Elizabeth PeckhamRound Rock$5.4M
- Susan IannacconeDallas$5.1M
- Benjamin GreenbergDallas$4.6M
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.