Mark Larson, M.D.

Mark V. Larson, M.D., is a gastroenterologist and internist at Mayo Clinic in Rochester, Minnesota, with a subspecialty focus on gastrointestinal oncology and advanced endoscopy. He primarily treats patients with colon cancer, rectal cancer, familial adenomatous polyposis, and gastrointestinal bleeding, serving adults in the Gastrointestinal Neoplasia Clinic, Endoscopy Clinic, and Early-Onset Colorectal Cancer Group within the Mayo Clinic Comprehensive Cancer Center. His prac