HealthcareDiscovery.AI / Doctors / Wisconsin / Gastroenterology

Gastroenterologists in Wisconsin

Data updated monthly · Last refresh October 2026

341 Gastroenterology providers practice in Wisconsin, including 82 (24%) 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.

341providers
82telehealth
Milwaukeetop city

Gastroenterology by city in Wisconsin

Choose a city to see providers there.

Gastroenterology in Milwaukee100 providers
Gastroenterology in Madison62 providers
Gastroenterology in Eau Claire20 providers
Gastroenterology in La Crosse18 providers
Gastroenterology in Green Bay18 providers
Gastroenterology in Wausau11 providers
Gastroenterology in Mequon9 providers
Gastroenterology in Marshfield9 providers
Gastroenterology in Sheboygan7 providers
Gastroenterology in Oshkosh6 providers
Gastroenterology in Kenosha5 providers
Gastroenterology in Beloit5 providers
Gastroenterology in Menomonee Falls5 providers
Gastroenterology in Fond Du Lac4 providers
Gastroenterology in Janesville4 providers
Gastroenterology in West Allis4 providers
Gastroenterology in Monroe3 providers
Gastroenterology in Ashland3 providers
Gastroenterology in Weston3 providers
Gastroenterology in Summit3 providers
Gastroenterology in Waukesha3 providers
Gastroenterology in Manitowoc3 providers
Gastroenterology in Wauwatosa3 providers
Gastroenterology in Cudahy3 providers

Gastroenterology 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. Kanwar Arora, MD
Green Bay, WI · No drug or device payments recorded (2025) · (920) 431-5650
Dr. Kwabena Adu-gyamfi, MD
Green Bay, WI · $1,254 in drug and device payments (2025) · (920) 496-4700
Dr. Lauren Johnson, MD
Green Bay, WI · $150 in drug and device payments (2025) · (920) 288-8000
Dr. Mark Laukka, MD
Green Bay, WI · $2,116 in drug and device payments (2025) · (920) 496-4700
Dr. Matthew Kaspar, MD
Green Bay, WI · $241 in drug and device payments (2025) · (920) 431-5650
Dr. Mitchell Manthey, MD
Green Bay, WI · No drug or device payments recorded (2025) · (920) 288-8100
Dr. Mohamed Azab, M.D
Green Bay, WI · $1,393 in drug and device payments (2025) · (920) 496-4700
Dr. Narayan Amarnani, MD
Green Bay, WI · No drug or device payments recorded (2025) · (920) 431-5650
Dr. Peter Dzwonkowski, MD
Green Bay, WI · No drug or device payments recorded (2025) · (920) 496-4700
Dr. Peter Stanko, MD
Green Bay, WI · No drug or device payments recorded (2025) · (920) 496-4700
Dr. Roland Christian, MD
Green Bay, WI · $102 in drug and device payments (2025) · (920) 496-4700
Dr. Swati Chaudhari, MD
Green Bay, WI · No drug or device payments recorded (2025) · (920) 431-5650
Dr. Vikas Khullar, M.D.
Green Bay, WI · $740 in drug and device payments (2025) · (920) 496-4700
Dr. Nadia Huq
Hartford, WI · No drug or device payments recorded (2025) · Telehealth · (262) 670-4000
Dr. Imtiaz Mohamed, MD
Hayward, WI · No drug or device payments recorded (2025) · (715) 934-4321
Dr. Andrzej Marzec, MD
Janesville, WI · No drug or device payments recorded (2025) · (608) 756-7100
Dr. Ian Monk, MD
Janesville, WI · $2,498 in drug and device payments (2025) · (608) 756-6807
Dr. Ramez Khoury, MD
Janesville, WI · $4,765 in drug and device payments (2025) · (608) 756-7100
Dr. William Brandt, MD
Janesville, WI · No drug or device payments recorded (2025) · (608) 371-8000
Dr. Marc Kennedy, M.D.
Kenosha, WI · $377 in drug and device payments (2025) · Telehealth · (262) 948-7000
Dr. Mario Garretto, MD
Kenosha, WI · $1,015 in drug and device payments (2025) · (262) 653-5330
Dr. Mohammed Qadeer, MD
Kenosha, WI · No drug or device payments recorded (2025) · Telehealth · (262) 948-7000
Dr. Peter Han, M.D.
Kenosha, WI · No drug or device payments recorded (2025) · Telehealth · (262) 948-7000
Dr. Woosuk Park, MD
Kenosha, WI · No drug or device payments recorded (2025) · Telehealth · (629) 487-0002
Dr. Amandeep Kalra, M.D.
La Crosse, WI · $861 in drug and device payments (2025) · (608) 782-7300
Dr. Daisy Batista, M.D.
La Crosse, WI · $718 in drug and device payments (2025) · (608) 785-0940
Dr. Elena Sidorenko, MD
La Crosse, WI · $2,694 in drug and device payments (2025) · (608) 785-0940
Dr. Frank Aberger, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 782-7300
Dr. Heather Chial, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 785-0940
Dr. James Groskreutz, MD
La Crosse, WI · No drug or device payments recorded (2025) · Telehealth · (608) 782-7300
Dr. Kenneth Horth, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 782-7300
Dr. Michael Henry, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 782-7300
Dr. Michael Vannorstrand, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 392-3911
Dr. Milan Folkers, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 782-7300
Dr. Monica Sharma, D.O.
La Crosse, WI · $171 in drug and device payments (2025) · (608) 782-7300
Dr. Padmavathi Mali, M.D.
La Crosse, WI · No drug or device payments recorded (2025) · (608) 782-7300
Dr. Robert Shaffer, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 791-9862
Dr. Scott Rathgaber, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 782-7300
Dr. Siegfried Yu, M.D.
La Crosse, WI · No drug or device payments recorded (2025) · (608) 782-7300
Dr. Steven Schlack-haerer, MD
La Crosse, WI · No drug or device payments recorded (2025) · (608) 782-7300
Dr. Tariq Shakoor, M.D.
La Crosse, WI · $18 in drug and device payments (2025) · (608) 782-7300
Dr. Yonas Getachew, M.D.
La Crosse, WI · No drug or device payments recorded (2025) · (608) 785-0940
Dr. Gregory Cramer, MD
Lacrosse, WI · No drug or device payments recorded (2025) · (608) 392-9862
Dr. Abby Lochmann-bailkey, M.D.
Madison, WI · No drug or device payments recorded (2025) · Telehealth · (608) 260-2900
Dr. Abigail Christiansen, MD
Madison, WI · No drug or device payments recorded (2025) · (608) 260-2900
Dr. Alexander Larson, MD
Madison, WI · No drug or device payments recorded (2025) · (608) 260-2900
Dr. Alexander Lee, M.D.
Madison, WI · No drug or device payments recorded (2025) · Telehealth · (608) 260-2900
Dr. Alexandru Musat, MD
Madison, WI · No drug or device payments recorded (2025) · (608) 263-8094
Dr. Andrew Spiel, M.D.
Madison, WI · No drug or device payments recorded (2025) · Telehealth · (608) 890-5010
Dr. Andrew Walker, M.D.
Madison, WI · No drug or device payments recorded (2025) · Telehealth · (608) 260-2900

Conditions Gastroenterology providers in Wisconsin commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Gastroenterology providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Gastroenterology providers are in Wisconsin?

There are 341 Gastroenterology providers with active NPI records practicing in Wisconsin, according to federal NPPES data refreshed monthly.

Do Gastroenterology providers in Wisconsin offer telehealth?

Yes. 82 of the 341 Gastroenterology providers in Wisconsin (about 24%) report offering telehealth services in CMS data.

Which cities in Wisconsin have the most Gastroenterology providers?

Milwaukee (100), Madison (62), Eau Claire (20) have the highest concentration of Gastroenterology providers in Wisconsin.

How many Gastroenterology providers in Wisconsin received drug or device company payments?

123 of 341 Gastroenterology providers in Wisconsin (36%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Gastroenterology providers in Wisconsin treat?

Gastroenterology providers commonly treat acid reflux, IBS, Crohn disease, ulcerative colitis, celiac disease 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 Gastroenterologists in Wisconsin work in independent practices or large health systems?

Among 216 Gastroenterologists in Wisconsin enrolled in Medicare, 3% bill through a solo or small practice with fewer than 10 clinicians, 16% through a mid-size group of 10 to 99, and 81% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Gastroenterologists in Wisconsin work at?

According to CMS facility affiliation records, the Wisconsin hospitals where the most Gastroenterologists hold privileges are Aurora St Lukes Medical Center in Milwaukee; University of Wi Hospitals & Clinics Authority in Madison; Unitypoint Health - Meriter in Madison.

Related reading on HealthcareDiscovery.AI

Gastroenterology in all 50 states Search all 341 in the directory Ask Zach for help choosing

Related

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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 Gastroenterology in Wisconsin? Get featured.