Gastroenterology in Madison, Wisconsin
Data updated monthly · Last refresh September 2026
62 Gastroenterology providers practice in Madison, and 26% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Gastroenterology providers in Madison
Listed alphabetically. 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. Abby Lochmann-bailkey, M.D.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 260-2900 Dr. Abigail Christiansen, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 260-2900 Dr. Alexander Larson, MDMadison, 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, MDMadison, 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 Dr. Annette Glasser, CNPMadison, WI · No drug or device payments recorded (2025) ·
(608) 263-8094 Dr. Antonio Bosch, MDMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 890-5000 Dr. Anurag Soni, MDMadison, WI · $131 in drug and device payments (2025) · Telehealth ·
(608) 265-8528 Dr. Arnold Wald, MDMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 263-8094 Dr. Bryan Magenheim, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 287-2680 Dr. Christopher Lindholm, MDMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 890-5090 Dr. Deepak Gopal, MDMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 263-8094 Dr. Eric Gaumnitz, MDMadison, WI · $121 in drug and device payments (2025) · Telehealth ·
(608) 263-8094 Dr. Freddy Caldera, D.O.Madison, WI · $20,468 in drug and device payments (2025) · Telehealth ·
(608) 263-1995 Dr. Gabriela LobatoMadison, WI · $35 in drug and device payments (2025) · Telehealth ·
(608) 890-5090 Dr. Gabrielle Waclawik, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 916-0400 Dr. Gary Griglione, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 417-5454 Dr. Gregory Nelligan, M.D.Madison, WI · No drug or device payments recorded (2025) ·
(608) 256-1901 Dr. Harsh PatelMadison, WI · No drug or device payments recorded (2025) ·
(608) 263-8094 Dr. Ian Grimes, M.D.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 890-5000 Dr. Jameel Alp, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 263-6400 Dr. James Vandermeer, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 252-8000 Dr. Jason Gonzaga, M.D.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 260-2900 Dr. Jason Stangl, MDMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 287-2680 Dr. Jihad Aljabban, MD, MMSCMadison, WI · $110 in drug and device payments (2025) ·
(608) 263-6400 Dr. John Hamilton, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 260-2900 Dr. John Rice, M.D.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 265-8528 Dr. John Williams, M.D.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 287-2680 Dr. Katelyn Backhaus, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 263-6400 Dr. Kerstin Austin, M.D.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 263-5660 Dr. Lisa Strate, M.D. MPHMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 890-5090 Dr. Luis Lomeli, MDMadison, WI · $2,769 in drug and device payments (2025) · Telehealth ·
(608) 263-4034 Dr. Mansoor Shariff, M.D.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 890-5000 Dr. Mark Benson, M.D.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 263-8094 Dr. Mark Reichelderfer, MDMadison, WI · No drug or device payments recorded (2025) ·
(608) 238-8235 Dr. Matthew Caldis, M.D., M.S.Madison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 890-5090 Dr. Matthew Ewy, MD, RD, CNSCMadison, WI · No drug or device payments recorded (2025) ·
(608) 263-0572 Dr. Megan LutzMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 890-5090 Dr. Michael Allan, MDMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 260-2900 Dr. Michael DybalaMadison, WI · No drug or device payments recorded (2025) ·
(608) 263-6400 Dr. Naree Whang, MDMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 260-2900 Dr. Omar Calderon, MDMadison, WI · No drug or device payments recorded (2025) ·
(813) 259-0670 Dr. Patrick Hoversten, M.DMadison, WI · No drug or device payments recorded (2025) · Telehealth ·
(608) 260-2900 Conditions Gastroenterology providers in Madison, 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.
- Acid reflux
- IBS
- Crohn disease
- Ulcerative colitis
- Celiac disease
- Colon cancer screening
Common questions
How many Gastroenterology providers are in Madison, Wisconsin?There are 62 Gastroenterology providers with active NPI records practicing in Madison, according to federal NPPES data refreshed monthly.
How many Gastroenterology providers in Madison received drug or device company payments?16 of 62 (26%) 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 Madison treat?Gastroenterology providers in Madison 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 records 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.
All specialties in Madison Gastroenterology across Wisconsin
