General Surgeons in Wisconsin
Data updated monthly · Last refresh October 2026
725 Surgery providers practice in Wisconsin, including 49 (7%) offering telehealth. The largest concentration is in Madison. 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.
725providers
49telehealth
Madisontop city
Surgery by city in Wisconsin
Choose a city to see providers there.
Where General Surgeons in Wisconsin practice
From CMS Medicare enrollment records covering 409 of the 725 providers listed here (56%). Providers who do not bill Medicare are not included in these figures.
6%solo or small practice (under 10 clinicians)
20%mid-size group (10 to 99)
74%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | General Surgeons | All clinicians in group | Main city |
| Aurora Medical Group, Inc.. | 57 | 3,764 | Milwaukee |
| The Medical College of Wisconsin Inc. | 30 | 2,092 | Milwaukee |
| University of Wisconsin Medical Foundation Inc. | 29 | 2,537 | Madison |
| Ascension Medical Group-Southeast Wisconsin Inc. | 17 | 551 | Brookfield |
| Mchs Hospitals Inc. | 16 | 1,195 | Marshfield |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | General Surgeons affiliated |
| University of Wi Hospitals & Clinics Authority | Madison | Government | 5 of 5 | 35 |
| Aurora St Lukes Medical Center | Milwaukee | Nonprofit | 4 of 5 | 31 |
| Froedtert Memorial Lutheran Hospital | Milwaukee | Nonprofit | 3 of 5 | 30 |
| Thedacare Regional Med Ctr - Neenah | Neenah | Nonprofit | 4 of 5 | 20 |
| Gundersen Lutheran Medical Center | La Crosse | Nonprofit | 4 of 5 | 20 |
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.
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. Sarah Gunem, MSN, RN, FNP-BCAltoona, WI · No drug or device payments recorded (2025) ·
(715) 575-5800 Dr. Anders Ulland, M.D.Amery, WI · No drug or device payments recorded (2025) ·
(715) 268-8000 Dr. James Quenan, MDAmery, WI · No drug or device payments recorded (2025) ·
(715) 268-8000 Dr. Linda Serna, M.D.Amery, WI · No drug or device payments recorded (2025) ·
(715) 268-8000 Dr. Lorant Divald, M.D.Amery, WI · $1,500 in drug and device payments (2025) ·
(715) 268-8000 Dr. Michael Schneider, MDAmery, WI · No drug or device payments recorded (2025) ·
(715) 268-8000 Dr. Corey Slominski, M.D.Antigo, WI · No drug or device payments recorded (2025) ·
(715) 623-2351 Dr. Todd Hendrickson, MDAntigo, WI · No drug or device payments recorded (2025) ·
(715) 623-2351 Dr. Amanda Hein, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8131 Dr. Benjamin Abadeer, DOAppleton, WI · $2,119 in drug and device payments (2025) ·
(920) 882-8200 Dr. Beth Krieger, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8289 Dr. Charles Cheng, MDAppleton, WI · $977 in drug and device payments (2025) ·
(920) 731-8289 Dr. Christopher Wagner, MDAppleton, WI · $595 in drug and device payments (2025) ·
(920) 731-8131 Dr. David Duppler, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8289 Dr. Eric Stanelle, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8131 Dr. Honnie Bermas, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8131 Dr. Janeil Mitchell, MDAppleton, WI · $33 in drug and device payments (2025) ·
(920) 731-8131 Dr. Katherine Deangeli, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8131 Dr. Maykong Leepalao, M.D.Appleton, WI · $3,771 in drug and device payments (2025) ·
(920) 730-4435 Dr. Michael Black, M.D.Appleton, WI · $30 in drug and device payments (2025) ·
(920) 731-8131 Dr. Peter Ullrich, MDAppleton, WI · $5,156,899 in drug and device payments (2025) ·
(920) 882-8200 Dr. Philip Vogt, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8289 Dr. Ping Lady, M.D.Appleton, WI · $1,831 in drug and device payments (2025) ·
(920) 730-4435 Dr. Sarah Burger, M.D.Appleton, WI · $612 in drug and device payments (2025) ·
(920) 731-8131 Dr. Thomas Winek, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 731-8289 Dr. Tina Sauerhammer, M.D.Appleton, WI · $170 in drug and device payments (2025) ·
(920) 965-1234 Dr. Tyler WarmackAppleton, WI · $2,519 in drug and device payments (2025) ·
(920) 738-2000 Dr. Charles BertelAshland, WI · No drug or device payments recorded (2025) ·
(715) 685-7500 Dr. Matthew Bettendorf, M.D. Dr. Clint Semrau, DOBaldwin, WI · No drug or device payments recorded (2025) ·
(715) 684-1111 Dr. Siwen Liu, D.O.Baldwin, WI · $3,528 in drug and device payments (2025) ·
(715) 684-1111 Dr. Kellie Jones-monahan, M.D.Baraboo, WI · $549 in drug and device payments (2025) ·
(608) 355-6868 Dr. Mark Meier, MDBaraboo, WI · No drug or device payments recorded (2025) ·
(608) 355-3800 Dr. Christa Mars, M.D.Barron, WI · No drug or device payments recorded (2025) ·
(715) 537-3166 Dr. Lemuel Yerby, M.D.Barron, WI · No drug or device payments recorded (2025) ·
(715) 838-5222 Dr. Timothy Berkseth, MDBarron, WI · No drug or device payments recorded (2025) ·
(715) 537-3166 Dr. Joseph Militollo, MDBeaver Dam, WI · No drug or device payments recorded (2025) ·
(920) 887-0379 Dr. Paul Palmer, MDBeaver Dam, WI · No drug or device payments recorded (2025) ·
(920) 887-0379 Dr. Melissa Amberger, D.O.Beloit, WI · $1,520 in drug and device payments (2025) ·
(608) 364-2200 Dr. Neel Karne, MDBeloit, WI · $2,020 in drug and device payments (2025) ·
(608) 364-2200 Dr. Nissage Cadet, M.D.Beloit, WI · $1,551 in drug and device payments (2025) ·
(608) 364-2400 Dr. Barry Rogers, MDBerlin, WI · No drug or device payments recorded (2025) ·
(920) 361-5340 Dr. Darren Nelson, MDBerlin, WI · No drug or device payments recorded (2025) ·
(920) 361-5340 Dr. M Bruce, MDBerlin, WI · No drug or device payments recorded (2025) ·
(920) 361-5770 Dr. Darrin Antonelli, M.D.Black River Falls, WI · No drug or device payments recorded (2025) ·
(715) 284-4311 Dr. Nicholas Kitowski, M.D.Black River Falls, WI · No drug or device payments recorded (2025) ·
(715) 284-4311 Dr. Bobby Wu, MDBrookfield, WI · No drug or device payments recorded (2025) ·
(262) 786-3722 Common questions
How many Surgery providers are in Wisconsin?There are 725 Surgery providers with active NPI records practicing in Wisconsin, according to federal NPPES data refreshed monthly.
Do Surgery providers in Wisconsin offer telehealth?Yes. 49 of the 725 Surgery providers in Wisconsin (about 7%) report offering telehealth services in CMS data.
Which cities in Wisconsin have the most Surgery providers?Madison (125), Milwaukee (109), La Crosse (39) have the highest concentration of Surgery providers in Wisconsin.
How many Surgery providers in Wisconsin received drug or device company payments?266 of 725 Surgery providers in Wisconsin (37%) 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 General Surgeons in Wisconsin work in independent practices or large health systems?Among 409 General Surgeons in Wisconsin enrolled in Medicare, 6% bill through a solo or small practice with fewer than 10 clinicians, 20% through a mid-size group of 10 to 99, and 74% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do General Surgeons in Wisconsin work at?According to CMS facility affiliation records, the Wisconsin hospitals where the most General Surgeons hold privileges are University of Wi Hospitals & Clinics Authority in Madison; Aurora St Lukes Medical Center in Milwaukee; Froedtert Memorial Lutheran Hospital in Milwaukee.
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