Internal Medicine Doctors in Wisconsin
Data updated monthly · Last refresh October 2026
2,081 Internal Medicine providers practice in Wisconsin, including 377 (18%) 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.
2,081providers
377telehealth
Madisontop city
Internal Medicine by city in Wisconsin
Choose a city to see providers there.
Where Internal Medicine Doctors in Wisconsin practice
From CMS Medicare enrollment records covering 984 of the 2,081 providers listed here (47%). Providers who do not bill Medicare are not included in these figures.
4%solo or small practice (under 10 clinicians)
11%mid-size group (10 to 99)
85%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Internal Medicine Doctors | All clinicians in group | Main city |
| Aurora Medical Group, Inc.. | 126 | 3,764 | Milwaukee |
| Froedtert Andthe Medical College of Wisconsin Community Physicians Inc. | 78 | 1,265 | Menomonee Falls |
| University of Wisconsin Medical Foundation Inc. | 76 | 2,537 | Madison |
| Gundersen Lutheran Medical Center Inc. | 62 | 888 | La Crosse |
| Ascension Medical Group-Southeast Wisconsin Inc. | 55 | 551 | Brookfield |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Internal Medicine Doctors affiliated |
| University of Wi Hospitals & Clinics Authority | Madison | Government | 5 of 5 | 148 |
| Froedtert Memorial Lutheran Hospital | Milwaukee | Nonprofit | 3 of 5 | 125 |
| Aurora St Lukes Medical Center | Milwaukee | Nonprofit | 4 of 5 | 122 |
| Unitypoint Health - Meriter | Madison | Nonprofit | 5 of 5 | 109 |
| Ascension Se Wisconsin Hospital | Milwaukee | Nonprofit | 5 of 5 | 101 |
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.
Internal Medicine 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. Ralph Nelson, D.O.Algoma, WI · No drug or device payments recorded (2025) ·
(920) 487-3496 Dr. Michele Bauer, MDAltoona, WI · No drug or device payments recorded (2025) ·
(715) 852-5721 Dr. Aravind ChandraAmery, WI · No drug or device payments recorded (2025) ·
(715) 268-8000 Dr. John Myers, MDAntigo, WI · No drug or device payments recorded (2025) ·
(715) 623-2351 Dr. Noel Deep, MDAntigo, WI · No drug or device payments recorded (2025) ·
(715) 623-2351 Dr. Aditya Rangbulla, M.DAppleton, WI · $444 in drug and device payments (2025) ·
(920) 730-4414 Dr. Andrew Pfaffenbach, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 731-5811 Dr. Arun Cherian, M.DAppleton, WI · No drug or device payments recorded (2025) ·
(917) 435-6141 Dr. Brandon Bukovitz, MDAppleton, WI · $23 in drug and device payments (2025) ·
(920) 996-1000 Dr. Carl Rasmussen, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 738-2000 Dr. Chelsey Mcnabb Pender, MDAppleton, WI · No drug or device payments recorded (2025) · Telehealth ·
(920) 731-5811 Dr. Chenhao Fan, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(917) 362-1790 Dr. Corey Macrander, MDAppleton, WI · $66 in drug and device payments (2025) ·
(920) 996-1000 Dr. Craig DestreeAppleton, WI · No drug or device payments recorded (2025) ·
(920) 735-7645 Dr. Daniel Mihalo, D.O.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 358-7526 Dr. David Nevin, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 735-7645 Dr. Deborah Ihde, MDAppleton, WI · $125 in drug and device payments (2025) ·
(920) 731-5811 Dr. Diane Kuehl, MDAppleton, WI · No drug or device payments recorded (2025) · Telehealth ·
(920) 225-7875 Dr. Dirk Steinert, MDAppleton, WI · $2,960 in drug and device payments (2025) ·
(920) 830-6877 Dr. Gail Mcnutt, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 831-0070 Dr. Ifreah UsmaielAppleton, WI · $305 in drug and device payments (2025) ·
(920) 738-2000 Dr. Jack Anderson, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 731-5811 Dr. Jeyakumar Kandaraj, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 738-2000 Dr. Joan Crennan, MDAppleton, WI · No drug or device payments recorded (2025) ·
(505) 321-4094 Dr. John Kirkpatrick, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 734-5721 Dr. Karim Rahimi, MDAppleton, WI · $129 in drug and device payments (2025) ·
(920) 738-2000 Dr. Kayode Bello, M.D., M.P.H.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 738-2000 Dr. Kristine Juntunen, M.D.Appleton, WI · No drug or device payments recorded (2025) · Telehealth ·
(920) 996-1000 Dr. Madhavi Reddy Cherukula, MDAppleton, WI · $33 in drug and device payments (2025) · Telehealth ·
(920) 225-7875 Dr. Mary Stastny, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 831-7919 Dr. Mbonu Ikezuagu, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 702-6371 Dr. Meha Minhas, M.D.Appleton, WI · $137 in drug and device payments (2025) ·
(920) 738-2000 Dr. Michael Johnson, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 996-1000 Dr. Mohamed Zakarya, M.D.Appleton, WI · No drug or device payments recorded (2025) ·
(920) 223-2067 Dr. Randall Gunther, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 738-2000 Dr. Roderick Hubert, MDAppleton, WI · $17 in drug and device payments (2025) ·
(920) 996-1000 Dr. Sahar Ahmad, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 734-9600 Dr. Sarah SaleemiAppleton, WI · No drug or device payments recorded (2025) ·
(920) 267-5576 Dr. Satish Achanti, MDAppleton, WI · $101 in drug and device payments (2025) ·
(920) 735-7645 Dr. Scott Gyorog, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 996-1046 Dr. Scott Nygaard, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 738-2000 Dr. Shanthi Joseph, MDAppleton, WI · $866 in drug and device payments (2025) · Telehealth ·
(920) 730-4414 Dr. Sonya Eiben, MDAppleton, WI · $42 in drug and device payments (2025) ·
(920) 996-1000 Dr. Stephen Dernlan, MDAppleton, WI · No drug or device payments recorded (2025) ·
(920) 996-1000 Dr. Umar Siddiqui, MDAppleton, WI · $17 in drug and device payments (2025) ·
(920) 731-5811 Dr. Clair MorudAshland, WI · No drug or device payments recorded (2025) ·
(715) 685-7500 Dr. Dennis ZahmAshland, WI · No drug or device payments recorded (2025) ·
(715) 685-7500 Dr. Kim Ogle, MDAshland, WI · No drug or device payments recorded (2025) · Telehealth ·
(715) 685-7500 Dr. Mark BelknapAshland, WI · No drug or device payments recorded (2025) ·
(715) 685-7500 Dr. Paul Liss, MDBaileys Harbor, WI · No drug or device payments recorded (2025) ·
(920) 839-2630 Conditions Internal Medicine providers in Wisconsin commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Wisconsin?There are 2,081 Internal Medicine providers with active NPI records practicing in Wisconsin, according to federal NPPES data refreshed monthly.
Do Internal Medicine providers in Wisconsin offer telehealth?Yes. 377 of the 2,081 Internal Medicine providers in Wisconsin (about 18%) report offering telehealth services in CMS data.
Which cities in Wisconsin have the most Internal Medicine providers?Madison (411), Milwaukee (383), La Crosse (113) have the highest concentration of Internal Medicine providers in Wisconsin.
How many Internal Medicine providers in Wisconsin received drug or device company payments?350 of 2,081 Internal Medicine providers in Wisconsin (17%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Internal Medicine providers in Wisconsin treat?Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.
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 Internal Medicine Doctors in Wisconsin work in independent practices or large health systems?Among 984 Internal Medicine Doctors in Wisconsin enrolled in Medicare, 4% bill through a solo or small practice with fewer than 10 clinicians, 11% through a mid-size group of 10 to 99, and 85% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Internal Medicine Doctors in Wisconsin work at?According to CMS facility affiliation records, the Wisconsin hospitals where the most Internal Medicine Doctors hold privileges are University of Wi Hospitals & Clinics Authority in Madison; Froedtert Memorial Lutheran Hospital in Milwaukee; Aurora St Lukes Medical Center in Milwaukee.
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