Print Departments and specialties Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery. Departments with related expertise Cancer Care at Mayo Clinic Colon and Rectal Surgery Critical Care Early-Onset and Hereditary GI Cancers Program Early-Onset Colorectal Cancer Group Gastroenterology and Hepatology Laboratory Medicine and Pathology Pediatric Hematology/Oncology Radiology Areas that research this procedure Radiology Research Doctors who perform this procedure Edit search filters close Narrow your search By location Rochester, MN By last name Find a doctor whose last name begins with the letter A A Find a doctor whose last name begins with the letter B B Find a doctor whose last name begins with the letter C C Find a doctor whose last name begins with the letter D D Find a doctor whose last name begins with the letter E E Find a doctor whose last name begins with the letter F F Find a doctor whose last name begins with the letter G G Find a doctor whose last name begins with the letter H H There are no doctors whose last name begins with the letter I I active Find a doctor whose last name begins with the letter J J Find a doctor whose last name begins with the letter K K Find a doctor whose last name begins with the letter L L Find a doctor whose last name begins with the letter M M There are no doctors whose last name begins with the letter N N Find a doctor whose last name begins with the letter O O Find a doctor whose last name begins with the letter P P There are no doctors whose last name begins with the letter Q Q Find a doctor whose last name begins with the letter R R Find a doctor whose last name begins with the letter S S There are no doctors whose last name begins with the letter T T There are no doctors whose last name begins with the letter U U Find a doctor whose last name begins with the letter V V Find a doctor whose last name begins with the letter W W There are no doctors whose last name begins with the letter X X There are no doctors whose last name begins with the letter Y Y Find a doctor whose last name begins with the letter Z Z Reset all filters Search Tips Use quotes for phrases. Even if there are no auto-suggestions within the search field, hit "Search" anyway, as you may still get results. Displaying 1-1 out of 1 doctors available Last Name Initial: J Amanda M. Johnson, M.D. Gastroenterologist Rochester, MN Areas of focus: Colonoscopy, Upper endoscopy, Inflammatory bowel disease, Gastrointestinal disorder ResearchMayo Clinic researchers are advancing the science and practice of colonoscopy to improve detection, preparation, comfort and outcomes for people undergoing colorectal cancer screening or evaluation of colonic conditions. Mayo Clinic Comprehensive Cancer Center meets the strict standards for a U.S. National Cancer Institute comprehensive cancer center. These standards recognize scientific excellence and a multispecialty approach focused on cancer prevention, diagnosis and treatment. Mayo Clinic is conducting numerous clinical trials that explore new tools, technologies and approaches in colonoscopy and related areas. PublicationsSee a list of publications about colonoscopy by Mayo Clinic doctors on PubMed, a service of the National Library of Medicine. Research Profiles Edit search filters close Narrow your search By location Arizona Florida Minnesota View all View all physicians • All Locations Ramirez, Francisco C. M.D. Arizona Wallace, Michael B. M.D. Florida By Mayo Clinic Staff Colonoscopy care at Mayo Clinic Request an appointment AboutCare at Mayo Clinic Feb. 06, 2026 PrintShow references U.S. Preventive Services Task Force. Screening for colorectal cancer: U.S. Preventive Services Task Force Recommendation Statement. JAMA. 2021; doi:10.1001/jama.2021.6238. Gupta S, et al. Recommendations for follow-up after colonoscopy and polypectomy: A consensus update by the U.S. Multi-Society Task Force on Colorectal Cancer. Gastroenterology. 2020; doi:10.1053/j.gastro.2019.10.026. Colorectal cancer early detection, diagnosis, and staging. https://www.cancer.org/cancer/types/colon-rectal-cancer/detection-diagnosis-staging.html. American Cancer Society. Accessed Jan. 16, 2026. A-Rahim YI, et al. Bowel preparation before colonoscopy in adults. https://www.uptodate.com/contents/search. Accessed Jan. 16, 2026. Colonoscopy. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/diagnostic-tests/colonoscopy. Accessed Jan. 16, 2026. Lee L, et al. Overview of colonoscopy in adults. https://www.uptodate.com/contents/search. Accessed Jan. 16, 2026. Knudsen AB, et al. Colorectal cancer screening: An updated modeling study for the U.S. Preventive Services Task Force. JAMA. 2021; doi:10.1001/jama.2021.5746. Colonoscopy. American College of Gastroenterology. https://gi.org/topics/colonoscopy/. Accessed Jan. 16, 2026. American Society for Gastrointestinal Endoscopy. Guidelines for endoscopy in pregnant and lactating women. Gastrointestinal Endoscopy. 2012; doi:10.1016/j.gie.2012.02.029. Can you have a colonoscopy when you're menstruating? International Center for Global Health Information. https://www.icgi.org/can-you-have-a-colonoscopy-if-youre-menstruating/. Accessed Jan. 16, 2026. Health Education & Content Services. About your colonoscopy. Mayo Clinic; 2018. Related Anal fissure Anal itching Anemia Carcinoid tumors Clear liquid diet Colon cancer Colon cancer screening: At what age can you stop? 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Learn more about this top honor ColonoscopyAboutDoctors&Departments PRC-20393555 Tests & Procedures Colonoscopy