Tom Yao, MD
Neurological Surgery · Louisville, KYNPI 1235286113
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $342,129 of the $404,819 with a category attached, or 84.5%. Microvention, Inc. accounts for 93.1% of it on its own, with 18 other manufacturers making up the rest. Reporting peaked in 2020 at $106,781 and has fallen 78.8% since, to $22,603 in 2025. Among neurological surgery clinicians in KY with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 418 payments — averaging $968.47 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Microvention, Inc.$377K
- Medical Device Business Services, Inc.$9K
- Medtronic$9K
- Ischemaview, Inc.$8K
- Stryker$857
- Johnson & Johnson$493
- plus $1K from 13 others
Across 96 payments — averaging $2130.87 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.
- Microvention, Inc.$98K
- Medical Device Business Services, Inc.$67K
- Medtronic$23K
- Penumbra, Inc.$17K
What the payments were for
- Consulting fees$37,2999%
- Speaking & faculty fees$342,12985%
- Travel & lodging$17,5304%
- Food & beverage$7,8412%
- Education$200%
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 |
|---|---|---|
| Microvention, Inc. | 276 | $376,725 |
| Medical Device Business Services, Inc. | 17 | $9,028 |
| Medtronic(2 entities) | 57 | $8,792 |
| Ischemaview, Inc. | 4 | $7,800 |
| Stryker | 21 | $857 |
| Johnson & Johnson | 16 | $493 |
| Silk Road Medical, Inc. | 4 | $295 |
| Balt USA, LLC | 3 | $188 |
| Scientia Vascular | 1 | $169 |
| Penumbra, Inc. | 2 | $92 |
| NICO Corporation | 1 | $92 |
| Terumo Medical Corporation | 3 | $62 |
| CSL Behring | 3 | $62 |
| Portola Pharmaceuticals, LLC | 2 | $54 |
| Asahi Intecc USA, Inc. | 3 | $48 |
| Teleflex LLC | 1 | $18 |
| Cardiovascular Systems Inc. | 2 | $17 |
| Baxter Healthcare | 1 | $15 |
| Arkis Biosciences Inc | 1 | $14 |
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.
- WEB$186,618
- WEB Aneurysm Embolization System$186,157
- Pipeline$7,586
- EMBOGUARD$5,500
- PULSERIDER$1,350
- CEREPAK UNIFORM$1,133
- Pulsar Vascular PulseRider Aneurysm Neck Reconstruction Device$900
- SURPASS$265
- Aristotle$169
- Colossus$169
- Plato 17$169
- ENHANCE Transcarotid Peripheral Access Kit$156
- ENROUTE Transcarotid Stent$156
- ENROUTE Transcarotid Neuroprotection System$156
- ENROUTE .014 Guidewire$156
- SURPASS EVOLVE$147
- Optima Coil System$122
- MIDAS REX$121
How this compares
$404,819 in reported general payments places this provider in the 95th percentile of 99 neurological surgery providers in Kentucky.
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 |
|---|---|---|
| ClopidogrelClopidogrel Bisulfate | 15 | $105 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Louisville
- Joseph NeimatLouisville$196K
- Maria KoutourousiouLouisville$189K
- Shervin DashtiLouisville$146K
- Shawn AdamsLouisville$73K
- Nathaniel ToopLouisville$56K
- Thomas AltstadtLouisville$36K
- Brian WilliamsLouisville$33K
- Ajmal ZemmarLouisville$32K
- Redi RahmaniLouisville$29K
- Rodrigo Fernandez GajardoLouisville$24K
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.