John Johnkoski
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Wausau, WINPI 1992737035
Payments from drug & device makers
What this record shows
This record is dominated by education: $76,120 of the $124,498 with a category attached, or 61.1%. Intuitive Surgical accounts for 64.5% of it on its own, with 10 other manufacturers making up the rest. Reporting peaked in 2021 at $64,452 and has fallen 93.4% since, to $4,285 in 2025. Among thoracic surgery (cardiothoracic vascular surgery) clinicians in WI 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 221 payments — averaging $563.34 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$80K
- Atricure, Inc.$41K
- Medtronic$885
- Edwards Lifesciences$652
- Abbott$638
- Artivion, Inc.$217
- plus $421 from 5 others
Across 67 payments — averaging $1762.53 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.
- Atricure, Inc.$118K
What the payments were for
- Consulting fees$16,42513%
- Speaking & faculty fees$4000%
- Grants$5950%
- Travel & lodging$21,27617%
- Food & beverage$9,6838%
- Education$76,12061%
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 |
|---|---|---|
| Intuitive Surgical | 58 | $80,265 |
| Atricure, Inc. | 128 | $41,420 |
| Medtronic(2 entities) | 11 | $885 |
| Edwards Lifesciences | 12 | $652 |
| Abbott | 4 | $638 |
| Artivion, Inc. | 2 | $217 |
| Abiomed | 2 | $117 |
| Haemonetics Corporation | 1 | $98 |
| Boehringer Ingelheim | 1 | $86 |
| Baxter Healthcare | 1 | $61 |
| Boston Scientific | 1 | $59 |
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.
- Da Vinci Surgical System$49,544
- DAVINCI XI$30,000
- ATRICLIP LAA EXCLUSION SYSTEM$19,868
- SYNERGY ABLATION SYSTEM$14,140
- ISOLATOR SURGICAL ABLATION SYSTEM$9,444
- EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX$6,144
- ATRICURE ATRICLIP LAA EXCLUSION$5,021
- DISSECTOR$4,414
- ATRICURE CRYOICE CRYOSPHERE CRYOABLATION SYSTEM$2,880
- ATRICURE SYNERGY ABLATION SYSTEM$1,200
- CoreValve Evolut$526
- Trifecta GT Tissue Heart Valve$400
- EPI-SENSE GUIDED COAGULATION SYS$324
- ATRICURE CRYOICE CRYOABLATION SYSTEM (CRYO2)$255
- CARPENTIER-EDWARDS PERIMOUNT MAGNA PERICARDIAL BIOPROSTHESIS - AORTIC$139
- ON-X AORTIC HEART VALVE WITH CONFORM-X SEWING RING AND EXTENDED HOLDER$136
- Mitra Clip system$125
- Edwards SAPIEN 3 Transcatheter Heart Valve$118
- EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX, MODELS$115
- COREVALVE EVOLUT R$115
How this compares
$124,498 in reported general payments places this provider in the 95th percentile of 97 thoracic surgery (cardiothoracic vascular surgery) providers in Wisconsin.
See all thoracic surgery (cardiothoracic 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 |
|---|---|---|
| JardianceEmpagliflozin | 32 | $13,024 |
| EliquisApixaban | 11 | $6,975 |
| ClopidogrelClopidogrel Bisulfate | 51 | $883 |
| Amiodarone Hcl | 59 | $804 |
| Atorvastatin Calcium | 22 | $588 |
| Carvedilol | 18 | $429 |
| Mupirocin | 53 | $357 |
| Bumetanide | 11 | $231 |
| Metformin Hcl | 13 | $185 |
| Warfarin Sodium | 26 | $82 |
| Metoprolol Succinate | 12 | $81 |
| Metoprolol Tartrate | 13 | $80 |
| Spironolactone | 13 | $79 |
| Potassium Chloride | 13 | $78 |
| Allopurinol | 49 | $36 |
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 |
|---|---|---|
| Boehringer IngelheimJardiance | $86 | $13,02432 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 95th percentile of 97 thoracic surgery (cardiothoracic vascular surgery) providers in Wisconsin.
Other thoracic surgery (cardiothoracic vascular surgery) in Wausau
- Ronald MilesWausau$34K
- Amanda EilersWausau$28K
- Stephen ThorpWausau$14K
- Mario GasparriMilwaukee$516K
- David DemosMilwaukee$446K
- William TisolMilwaukee$339K
- Ghulam MurtazaMadison$106K
- Robert FerranteAppleton$73K
- Robert WiechmannEau Claire$68K
- Justin WatsonMadison$35K
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.