Dr. Mark Fesenmyer MD

  • Gastroenterology Naperville, IL

Patient Reviews

Reviews reflect patients' level of satisfaction with the care they received from this provider. Dr. Mark Fesenmyer xhas an overall rating of 4.0.


Dr. Mark Fesenmyer, MD is a Doctor primarily located in Naperville, IL, with other offices in Hobart, IN and Merrillville, IN (and 2 other locations). He has 22 years of experience. His specialties include Gastroenterology. Dr. Fesenmyer is affiliated with Advocate Good Samaritan Hospital, St Mary Medical Center Inc and Saint Luke's Memorial Hospital. He speaks English.


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Specialties & Expertise

Dr. Mark Fesenmyer has the following 8 areas of expertise, 1 specialty and 1 board certification.


A gastroenterologist is a specialist in diagnosis and treatment of conditions involving the digestive/gastrointestinal (GI) tract. These doctors are experts on how food moves through the digestive system and is chemically broken down, with nutrients being absorbed and waste excreted. You might see this kind of doctor if you are experiencing any number of stomach issues, some of which might be severe diarrhea, irritable bowel syndrome, hemorrhoids, ulcers, acid reflux, Crohn's disease and more.


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Board Certification

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Locations & Directions

100 Spalding Dr
Naperville, IL 60540

1600 S Lake Park Ave
Hobart, IN 46342

8895 Broadway
Merrillville, IN 46410

807 E Benton Ave
Naperville, IL 60540

3800 Saint Mary Rd
Valparaiso, IN 46383

Nearby Doctors

Dr. Mark Fesenmyer, MD is similar to these 3 Doctors near Naperville, IL.