Cardiothoracic Surgeons in Wisconsin
Data updated monthly · Last refresh October 2026
117 Thoracic Surgery (Cardiothoracic Vascular Surgery) providers practice in Wisconsin, including 13 (11%) offering telehealth. The largest concentration is in Milwaukee. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
117providers
13telehealth
Milwaukeetop city
Thoracic Surgery (Cardiothoracic Vascular Surgery) by city in Wisconsin
Choose a city to see providers there.
Where Cardiothoracic Surgeons in Wisconsin practice
From CMS Medicare enrollment records covering 62 of the 117 providers listed here (53%). Providers who do not bill Medicare are not included in these figures.
2%solo or small practice (under 10 clinicians)
2%mid-size group (10 to 99)
97%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Cardiothoracic Surgeons | All clinicians in group | Main city |
| The Medical College of Wisconsin Inc. | 10 | 2,092 | Milwaukee |
| Aurora Medical Group, Inc.. | 8 | 3,764 | Milwaukee |
| University of Wisconsin Medical Foundation Inc. | 8 | 2,537 | Madison |
| Bellin Memorial Hospital Inc. | 4 | 685 | Green Bay |
| Aspirus Medical Group, Inc.. | 4 | 272 | Wausau |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Cardiothoracic Surgeons affiliated |
| Froedtert Memorial Lutheran Hospital | Milwaukee | Nonprofit | 3 of 5 | 10 |
| Aurora St Lukes Medical Center | Milwaukee | Nonprofit | 4 of 5 | 9 |
| University of Wi Hospitals & Clinics Authority | Madison | Government | 5 of 5 | 8 |
| West Allis Memorial Hospital | West Allis | Nonprofit | 4 of 5 | 6 |
| Aspirus Wausau Hospital | Wausau | For-profit | 4 of 5 | 5 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Thoracic Surgery (Cardiothoracic Vascular Surgery) providers in Wisconsin
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Daniel Meldrum, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8900 Dr. Michelle Ellis, M.D..Appleton, WI · $495 in drug and device payments (2025) ·
(920) 731-8900 Dr. Robert Ferrante, MDAppleton, WI · $28,005 in drug and device payments (2025) ·
(920) 225-1370 Dr. Salvior Mok, M.D.Appleton, WI · $915 in drug and device payments (2025) ·
(920) 731-8900 Dr. Zenoun Abouzelam, MDAppleton, WI · $91 in drug and device payments (2025) ·
(920) 730-6700 Dr. Peter Dahlberg, M.D.Baldwin, WI · No drug or device payments recorded (2025) ·
(715) 684-1111 Dr. Peter Marks, M.D.Beloit, WI · No drug or device payments recorded (2025) ·
(608) 364-5011 Dr. Charles Reuben, M.D.Brookfield, WI · No drug or device payments recorded (2025) ·
(262) 827-9200 Dr. Arthur Coffey, M.D.Delafield, WI · $21 in drug and device payments (2025) ·
(317) 507-0927 Dr. David Healy, CSAEau Claire, WI · No drug or device payments recorded (2025) ·
(843) 343-0298 Dr. John Waciuma, M.D.Eau Claire, WI · No drug or device payments recorded (2025) ·
(715) 717-6600 Dr. Ralph Galdieri, M.D.Eau Claire, WI · No drug or device payments recorded (2025) ·
(715) 717-4121 Dr. Robert Wiechmann, MDEau Claire, WI · No drug or device payments recorded (2025) · Telehealth ·
(507) 284-2511 Dr. Thomas Carmody, MDEau Claire, WI · $68 in drug and device payments (2025) ·
(715) 838-5222 Dr. Alexander Roitstein, MDGreen Bay, WI · No drug or device payments recorded (2025) ·
(920) 288-8320 Dr. Fuad Zankoul, MDGreen Bay, WI · $5,858 in drug and device payments (2025) ·
(920) 272-1182 Dr. James Bailey, MDGreen Bay, WI · $219 in drug and device payments (2025) · Telehealth ·
(920) 433-9621 Dr. John Seccombe, MDGreen Bay, WI · $560 in drug and device payments (2025) ·
(920) 496-4700 Dr. Karl Damroth, M.D.Green Bay, WI · $517 in drug and device payments (2025) ·
(920) 433-9621 Dr. Kevin Greer, MDGreen Bay, WI · $142 in drug and device payments (2025) · Telehealth ·
(920) 433-9621 Dr. Kody Wyant, D.OGreen Bay, WI · $191 in drug and device payments (2025) ·
(920) 288-8320 Dr. Paul Shen, MDGreen Bay, WI · $696 in drug and device payments (2025) ·
(920) 496-4700 Dr. Steven Gerndt, MDGreen Bay, WI · $120 in drug and device payments (2025) ·
(920) 433-9621 Dr. Thomas Percival, MDGreen Bay, WI · $2,017 in drug and device payments (2025) ·
(920) 288-8000 Dr. Alfred Nicolosi, MDJanesville, WI · No drug or device payments recorded (2025) ·
(608) 756-6686 Dr. John Snider, MDJanesville, WI · $145 in drug and device payments (2025) ·
(608) 756-6611 Dr. Kenneth Wolnak, DOJanesville, WI · No drug or device payments recorded (2025) ·
(608) 756-6868 Dr. Sajjad Rizvi, MDLa Crosse, WI · $385 in drug and device payments (2025) ·
(608) 782-7300 Dr. Venki Paramesh, MDLa Crosse, WI · $613 in drug and device payments (2025) ·
(608) 782-7300 Dr. Andrea Axtell, MDMadison, WI · $3,733 in drug and device payments (2025) · Telehealth ·
(608) 263-8949 Dr. Andreas De Biasi, M.D.Madison, WI · $204 in drug and device payments (2025) · Telehealth ·
(608) 263-1530 Dr. Chris Rokkas, MDMadison, WI · $2,327 in drug and device payments (2025) ·
(414) 870-0191 Dr. Daniel Harris, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 263-7502 Dr. Daniel Mccarthy, M.D.Madison, WI · $3,978 in drug and device payments (2025) · Telehealth ·
(608) 287-2100 Dr. Deemy Rekkas, MDMadison, WI · $129 in drug and device payments (2025) ·
(608) 263-1530 Dr. Elizabeth Calle, MD, PHDMadison, WI · No drug or device payments recorded (2025) ·
(608) 263-6400 Dr. George Reiss, M.D.Madison, WI · No drug or device payments recorded (2025) ·
(608) 260-2900 Dr. Ghulam Murtaza, M.D.Madison, WI · $89,565 in drug and device payments (2025) ·
(608) 260-2900 Dr. Haywood Gilliam, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 417-6387 Dr. James Maloney, MDMadison, WI · $124 in drug and device payments (2025) · Telehealth ·
(608) 263-7502 Dr. Joshua Hermsen, M.D.Madison, WI · No drug or device payments recorded (2025) ·
(608) 263-6420 Dr. Justin Watson, M.D.Madison, WI · $11,640 in drug and device payments (2025) · Telehealth ·
(360) 305-4988 Dr. Khosro Adib, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 417-6259 Dr. Patrick Vining, MDMadison, WI · $279 in drug and device payments (2025) ·
(608) 260-2905 Dr. Peter Devito, MDMadison, WI · $2,941 in drug and device payments (2025) · Telehealth ·
(608) 915-0200 Dr. Robert Gomez, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 661-8159 Dr. Satoru Osaki, MDMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 263-4071 Common questions
How many Thoracic Surgery (Cardiothoracic Vascular Surgery) providers are in Wisconsin?There are 117 Thoracic Surgery (Cardiothoracic Vascular Surgery) providers with active NPI records practicing in Wisconsin, according to federal NPPES data refreshed monthly.
Do Thoracic Surgery (Cardiothoracic Vascular Surgery) providers in Wisconsin offer telehealth?Yes. 13 of the 117 Thoracic Surgery (Cardiothoracic Vascular Surgery) providers in Wisconsin (about 11%) report offering telehealth services in CMS data.
Which cities in Wisconsin have the most Thoracic Surgery (Cardiothoracic Vascular Surgery) providers?Milwaukee (42), Madison (27), Green Bay (10) have the highest concentration of Thoracic Surgery (Cardiothoracic Vascular Surgery) providers in Wisconsin.
How many Thoracic Surgery (Cardiothoracic Vascular Surgery) providers in Wisconsin received drug or device company payments?73 of 117 Thoracic Surgery (Cardiothoracic Vascular Surgery) providers in Wisconsin (62%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Cardiothoracic Surgeons in Wisconsin work in independent practices or large health systems?Among 62 Cardiothoracic Surgeons in Wisconsin enrolled in Medicare, 2% bill through a solo or small practice with fewer than 10 clinicians, 2% through a mid-size group of 10 to 99, and 97% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Cardiothoracic Surgeons in Wisconsin work at?According to CMS facility affiliation records, the Wisconsin hospitals where the most Cardiothoracic Surgeons hold privileges are Froedtert Memorial Lutheran Hospital in Milwaukee; Aurora St Lukes Medical Center in Milwaukee; University of Wi Hospitals & Clinics Authority in Madison.
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