HealthcareDiscovery.AI / Doctors / Wisconsin / Internal Medicine

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 in Madison411 providers
Internal Medicine in Milwaukee383 providers
Internal Medicine in La Crosse113 providers
Internal Medicine in Green Bay68 providers
Internal Medicine in Marshfield65 providers
Internal Medicine in Eau Claire55 providers
Internal Medicine in Wauwatosa45 providers
Internal Medicine in Menomonee Falls42 providers
Internal Medicine in Waukesha41 providers
Internal Medicine in Appleton40 providers
Internal Medicine in Brookfield40 providers
Internal Medicine in West Allis32 providers
Internal Medicine in Kenosha31 providers
Internal Medicine in Wausau26 providers
Internal Medicine in Mequon25 providers
Internal Medicine in Oshkosh25 providers
Internal Medicine in Neenah23 providers
Internal Medicine in Janesville22 providers
Internal Medicine in Sheboygan22 providers
Internal Medicine in Fond Du Lac19 providers
Internal Medicine in Grafton19 providers
Internal Medicine in Racine17 providers
Internal Medicine in West Bend17 providers
Internal Medicine in New Berlin17 providers

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. Channagatta Triyambakaraj, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 319-3000
Dr. Charlene Vander Zanden, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · Telehealth · (414) 955-5990
Dr. Charles Yoo
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 955-8296
Dr. Chelsea Mcelroy, D.O.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 805-6444
Dr. Chimezirim Ezeano, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 219-7136
Dr. Christopher Withers, D.O.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 372-8080
Dr. Clark Robinson, MD
Milwaukee, WI · $310 in drug and device payments (2025) · Telehealth · (414) 805-6850
Dr. Colleen Nichols, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 649-7202
Dr. Connor Enright, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 219-2000
Dr. Constance Ganapes, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 282-2006
Dr. Curtis Fowler, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 771-5600
Dr. Cynthia Kay, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 805-6850
Dr. Daniel Culhane, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 672-1353
Dr. Daniel Hettinger, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 319-3000
Dr. Daniel Jankins, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 805-6850
Dr. Daniel Keller, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 352-3100
Dr. Daniel Miota, DO
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 345-3240
Dr. Daniel Nordin, MD
Milwaukee, WI · No drug or device payments recorded (2025) · Telehealth · (414) 385-8600
Dr. David Alexanian, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 384-2000
Dr. David Hamel, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 219-2000
Dr. David Jenks, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 352-3100
Dr. David Klemer, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 384-1400
Dr. David Tennenbaum, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 270-4932
Dr. Deborah Grosenick, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 229-5169
Dr. Don Lee, M.D.
Milwaukee, WI · $98 in drug and device payments (2025) · (414) 647-7498
Dr. Eduardo Paz, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 383-6776
Dr. Edward Chang, MD
Milwaukee, WI · $526 in drug and device payments (2025) · Telehealth · (414) 389-3180
Dr. Edward Sarmiento, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 805-6850
Dr. Ekow Essien, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 219-7427
Dr. Elizabeth Teferra
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 219-2000
Dr. Ellen Danto-nocton, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · Telehealth · (414) 219-7300
Dr. Eric Halpern, MD
Milwaukee, WI · No drug or device payments recorded (2025) · Telehealth · (414) 805-6850
Dr. Erik Stilp, MD
Milwaukee, WI · $8,459 in drug and device payments (2025) · (414) 298-7230
Dr. Evelyn Chan, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · Telehealth · (414) 805-6850
Dr. Eyob Tadesse, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 219-2000
Dr. Faisal Masood
Milwaukee, WI · $2,943 in drug and device payments (2025) · (414) 219-2000
Dr. Farooq Ghouri, D.O
Milwaukee, WI · $2,416 in drug and device payments (2025) · (414) 649-6000
Dr. Fernando Itable, M.D.
Milwaukee, WI · $431 in drug and device payments (2025) · Telehealth · (414) 281-0050
Dr. Gabriel Aguero, DO
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 955-0350
Dr. Gabriel Mikhael, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 649-6000
Dr. Gail Kallas, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 384-2000
Dr. Ganesh Shrestha, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 955-0350
Dr. Gareth Hattersley
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 805-3666
Dr. Garrett Weber, DO
Milwaukee, WI · $22 in drug and device payments (2025) · (414) 219-7136
Dr. Gary Barnas, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 805-6850
Dr. Geoffrey Lamb, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 805-6850
Dr. George Lange, MD
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 773-6300
Dr. Gerald Sullivan, M.D.
Milwaukee, WI · $23 in drug and device payments (2025) · Telehealth · (414) 447-9890
Dr. Gilbert Jenouri, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 763-5928
Dr. Gilberto Marquez, M.D.
Milwaukee, WI · No drug or device payments recorded (2025) · (414) 727-6320

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.

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.

Related reading on HealthcareDiscovery.AI

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Internal Medicine in Wisconsin? Get featured.