Kevin Au, MD
Vascular Surgery · Madison, WINPI 1417344219
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $5,755 of the $7,949 with a category attached, or 72.4%. 16 manufacturers reported payments, led by W. L. Gore & Associates, Inc. at 46.7% of the total. Reporting peaked in 2022 at $2,876 and has fallen 63.2% since, to $1,058 in 2025.
Across 71 payments — averaging $111.96 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- W. L. Gore & Associates, Inc.$4K
- Terumo Medical Corporation$823
- Inari Medical, Inc.$654
- Silk Road Medical, Inc.$611
- Cardiovascular Systems Inc.$428
- Abbott$372
- plus $1K from 10 others
What the payments were for
- Travel & lodging$2,19428%
- Food & beverage$5,75572%
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 |
|---|---|---|
| W. L. Gore & Associates, Inc. | 24 | $3,714 |
| Terumo Medical Corporation | 11 | $823 |
| Inari Medical, Inc. | 11 | $654 |
| Silk Road Medical, Inc. | 4 | $611 |
| Cardiovascular Systems Inc. | 3 | $428 |
| Abbott | 3 | $372 |
| Bard Peripheral Vascular, Inc. | 2 | $250 |
| Medtronic | 2 | $233 |
| Stryker | 2 | $220 |
| Shockwave Medical, Inc | 2 | $169 |
| Boston Scientific | 2 | $150 |
| Bolton Medical Inc | 1 | $112 |
| Penumbra, Inc. | 1 | $98 |
| BD | 1 | $81 |
| AstraZeneca | 1 | $25 |
| Lemaitre Vascular, Inc. | 1 | $10 |
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.
- GORE TAG Thoracic Endoprosthesis$1,476
- GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis$1,046
- ENROUTE Transcarotid Neuroprotection System$748
- ENROUTE Transcarotid Stent$611
- Diamondback Peripheral$428
- ESPRIT$350
- Azur CX Detachable$281
- GORE VIABAHN VBX Balloon Expandable Endo$273
- R2P MISAGO$214
- FLOWTRIEVER CATHETER, S$196
- CT THROMBECTOMY SYSTEM KIT$196
- GORE TAG Conformable Thoracic Stent Graft$189
- GORE TAG Thoracic Branch Endoprosthesis$178
- ENDURANT IIS$157
- ENHANCE Transcarotid Peripheral Access Kit$152
- ENROUTE .014 Guidewire$152
- GORE EXCLUDER AAA Endoprosthesis$145
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$136
- RotarexS 6 F x 135 cm$134
- FlowTriever$129
How this compares
$7,949 in reported general payments places this provider in the 80th percentile of 81 vascular surgery providers in Wisconsin.
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 |
|---|---|---|
| EliquisApixaban | 12 | $7,936 |
| ClopidogrelClopidogrel Bisulfate | 70 | $1,171 |
| Atorvastatin Calcium | 65 | $540 |
| Rosuvastatin Calcium | 24 | $416 |
Paid to pharmacies, not to this prescriber.
Other vascular surgery in Madison
- Dai YamanouchiMadison$78K
- Brooks RademacherMadison$10K
- David DeangelesMadison$7K
- Benjamin JordanMadison$7K
- Eric WhittingtonMadison$6K
- Paul DimustoMadison$3K
- Kyla BennettMadison$2K
- Alexis JacobMadison$2K
- John RectenwaldMadison$2K
- Andrea UmMadison$2K
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.