Colonoscopy

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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.

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Displaying 1-2 out of 2 doctors available

Last Name Initial: J

  1. Channa R. Jayasekera, M.D.

    Channa R. Jayasekera, M.D.

    1. Gastroenterologist
    2. Transplant Hepatologist
    1. Phoenix, AZ
    Areas of focus:

    Liver transplant, Upper endoscopy, Colonoscopy, Jaundice, Hepatic encephalopathy, Liver cancer, Hepatocellular carcinom...a, Cirrhosis, Alcoholic liver disease, Hepatitis C, Hepatitis B, Nonalcoholic fatty liver disease, Primary biliary cholangitis, Liver tumor, Cholangiocarcinoma, Primary sclerosing cholangitis, Liver injury, Liver mass, Portal hypertension, Liver disease, Hemochromatosis, Alcoholic hepatitis, Metabolic liver disease

  2. Amanda M. Johnson, M.D.

    Amanda M. Johnson, M.D.

    1. Gastroenterologist
    1. Rochester, MN
    Areas of focus:

    Upper endoscopy, Colonoscopy, Inflammatory bowel disease, Gastrointestinal disorder

Research

Mayo 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.

Publications

See a list of publications about colonoscopy by Mayo Clinic doctors on PubMed, a service of the National Library of Medicine.

Research Profiles

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By Mayo Clinic Staff

Colonoscopy care at Mayo Clinic

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AboutCare at Mayo Clinic
Feb. 06, 2026
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  1. 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.
  2. 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.
  3. 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.
  4. A-Rahim YI, et al. Bowel preparation before colonoscopy in adults. https://www.uptodate.com/contents/search. Accessed Jan. 16, 2026.
  5. Colonoscopy. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/diagnostic-tests/colonoscopy. Accessed Jan. 16, 2026.
  6. Lee L, et al. Overview of colonoscopy in adults. https://www.uptodate.com/contents/search. Accessed Jan. 16, 2026.
  7. 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.
  8. Colonoscopy. American College of Gastroenterology. https://gi.org/topics/colonoscopy/. Accessed Jan. 16, 2026.
  9. American Society for Gastrointestinal Endoscopy. Guidelines for endoscopy in pregnant and lactating women. Gastrointestinal Endoscopy. 2012; doi:10.1016/j.gie.2012.02.029.
  10. 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.
  11. Health Education & Content Services. About your colonoscopy. Mayo Clinic; 2018.

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Colonoscopy