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.
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. Debra Muggler, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 696-5690 Dr. Dennis Zaide, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 352-5700 Dr. Gerald Berman, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 542-9531 Dr. Greg Brown, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 522-8640 Dr. Jamey Jick, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 549-3030 Dr. John Fish, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 646-3030 Dr. Jonathan Bodager, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 928-5400 Dr. Kavisha Gandhi, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 928-1000 Dr. Keshni Ramnanan, M.D.Waukesha, WI · $153 in drug and device payments (2025) ·
(262) 875-5070 Dr. Kieran Mcavoy, MDWaukesha, WI · $125 in drug and device payments (2025) · Telehealth ·
(262) 875-5070 Dr. Leslie Thompson, MDWaukesha, WI · $760 in drug and device payments (2025) ·
(262) 928-1000 Dr. Margaret BarrettWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 896-6000 Dr. Mark Roznik, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 549-3030 Dr. Martin Kern, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 542-9531 Dr. Melissa Kalt, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 532-5700 Dr. Paul O'neill, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 549-3030 Dr. Peter Geiss, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 928-4100 Dr. Prachi Pophali, MDWaukesha, WI · $19 in drug and device payments (2025) ·
(262) 928-5400 Dr. Reyhan Demircioglu, MDWaukesha, WI · No drug or device payments recorded (2025) · Telehealth ·
(262) 928-7555 Dr. Robert Krippendorf, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 696-0808 Dr. Roman Pyasta, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 896-6000 Dr. Sarfraz Sidhu, M.D.Waukesha, WI · $29 in drug and device payments (2025) ·
(262) 875-5070 Dr. Sarita Makhija, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 574-8000 Dr. Surendra Patel, M.D.Waukesha, WI · $162 in drug and device payments (2025) ·
(262) 875-5070 Dr. Thomas Cantieri, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 928-7555 Dr. Thomas Dougherty, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 542-9531 Dr. Thomas Gallagher, M.D.Waukesha, WI · $35 in drug and device payments (2025) ·
(262) 574-8000 Dr. Timothy Mcavoy, MDWaukesha, WI · $125 in drug and device payments (2025) ·
(262) 547-0000 Dr. Uma Thirumakizhmaran, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 549-3030 Dr. Wendy Cooper, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 549-3030 Dr. Whitney Hoffmann, DOWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 875-4521 Dr. William Boehm, M.D.Waukesha, WI · No drug or device payments recorded (2025) ·
(262) 549-3030 Dr. William Lutz, MDWaukesha, WI · No drug or device payments recorded (2025) ·
(262) 928-7555 Dr. Karen Loomans, MDWaunakee, WI · No drug or device payments recorded (2025) ·
(608) 265-7550 Dr. Mandip Bartels, M.D.Waupaca, WI · No drug or device payments recorded (2025) ·
(715) 258-1000 Dr. Charles Baynton, MDWaupun, WI · No drug or device payments recorded (2025) ·
(920) 324-5577 Dr. Dale Anderson, MDWausau, WI · No drug or device payments recorded (2025) ·
(715) 847-3269 Dr. Daljeet Rishi, MDWausau, WI · No drug or device payments recorded (2025) ·
(715) 847-2121 Dr. David Aughenbaugh, MDWausau, WI · No drug or device payments recorded (2025) ·
(715) 847-3265 Dr. Elizabeth Roe, DOWausau, WI · No drug or device payments recorded (2025) ·
(734) 546-6126 Dr. Erik Anderson, MDWausau, WI · No drug or device payments recorded (2025) ·
(715) 847-2004 Dr. Girish Shah, MBBSWausau, WI · No drug or device payments recorded (2025) ·
(800) 283-2881 Dr. Grace Laynes, MDWausau, WI · No drug or device payments recorded (2025) ·
(715) 387-5436 Dr. Ivan Schaller, MDWausau, WI · No drug or device payments recorded (2025) ·
(715) 847-3000 Dr. James Cygan, MDWausau, WI · $166 in drug and device payments (2025) · Telehealth ·
(715) 847-2480 Dr. Joshua Denk, MDWausau, WI · No drug or device payments recorded (2025) ·
(800) 283-2881 Dr. Kris Lahren, MDWausau, WI · No drug or device payments recorded (2025) ·
(715) 847-2480 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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