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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Doctors who perform this procedure

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Displaying 51-60 out of 77 doctors available

  1. Frank J. Lukens, M.D.

    Frank J. Lukens, M.D.

    1. Gastroenterologist
    1. Jacksonville, FL
    Areas of focus:

    Colonoscopy, Upper endoscopy, Capsule endoscopy, ERCP, Double balloon enteroscopy, Single balloon enteroscopy, Pancreat...ic cancer, Gastrointestinal varices, Gastroesophageal reflux disease, Pancreatic cyst, Colon polyps, Pancreatitis, Gallstones, Gastrointestinal bleeding, Chronic gastrointestinal bleeding, Pancreatic disorder, Small bowel stricture, Obscure gastrointestinal bleeding, Small bowel angiodysplasia, Pancreatic insufficiency, Small bowel AVM

  2. Harmeet Malhi, M.B.B.S.

    Harmeet Malhi, M.B.B.S.

    1. Transplant Hepatologist
    1. Rochester, MN
    Areas of focus:

    Colonoscopy, Upper endoscopy, Post-liver transplant care, Pre-liver transplant evaluation, Nonalcoholic fatty liver dis...ease, Nonalcoholic steatohepatitis, Hepatic encephalopathy, Liver injury

  3. Talha A. Malik, M.D.

    Talha A. Malik, M.D.

    1. Gastroenterologist
    1. Phoenix, AZ
    Areas of focus:

    Colonoscopy, Upper endoscopy, Crohn's disease, Inflammatory bowel disease, Ulcerative colitis

  4. George W. Marek, III, M.D., Ph.D.

    George W. Marek, III, M.D., Ph.D.

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

    Colonoscopy, Flexible sigmoidoscopy, Diagnostic endoscopy, Esophagoscopy, Polypectomy, Bravo capsule pH test, Esophagea...l dilation, Celiac disease, Gastroesophageal reflux disease, Irritable bowel syndrome, Lactose intolerance, Pelvic floor defecatory dysfunction, Colon polyps, Ehlers-Danlos syndrome, Helicobacter pylori infection, Peptic ulcer, Diarrhea, Alpha-gal allergy, Gastritis, Constipation, Alpha-1-antitrypsin deficiency, Malabsorption, Esophageal stricture, Fructose intolerance, Bile acid malabsorption

  5. Daniel B. Maselli, M.D.

    Daniel B. Maselli, M.D.

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

    Colonoscopy, Upper endoscopy, Endoscopic sleeve gastroplasty, Endoscopic mucosal resection, Intragastric balloon proced...ure, Transoral outlet reduction, Endoscopic dilation, Endoscopic biopsy, Endoscopic re-cellularization via electroporation therapy, Obesity, Metabolic syndrome, Colonic dysmotility, Gastroesophageal reflux disease, Colon polyps, Diarrhea, Esophageal varices, Constipation, Gastrointestinal bleeding, Fatty liver disease, Esophageal stricture, Gastrointestinal fistula, Gastrointestinal infection

  6. Kellie L. Mathis, M.D.

    Kellie L. Mathis, M.D.

    1. General Surgeon
    2. Colon and Rectal Surgeon
    1. Rochester, MN
    Areas of focus:

    Colonoscopy, Robotic surgery, Colorectal surgery, Rectal cancer surgery, Flexible sigmoidoscopy, Colectomy, Rectal prol...apse surgery, Proctectomy, Intraoperative radiation therapy, Colostomy, Ileoanal anastomosis surgery, Colon cancer surgery, Coloanal anastomosis, Anorectal surgery, Laparoscopic surgery, Ileostomy surgery, Colon cancer, Polyp, Inflammatory bowel disease, Ulcerative colitis, Lynch syndrome, Hemorrhoids, Fistula, Pelvic floor defecatory dysfunction, Anal cancer, Colon polyps, Anorectal abnormality, Rectal cancer, Carcinoid tumor, Diverticulitis, Pouchitis, Abscess, Rectal prolapse, Anal fissure, Anal fistula, Constipation, Familial adenomatous polyposis, Vaginal fistula, Recurrent cancer, Pelvic floor dysfunction, Polyposis syndromes, Tubular colon adenoma

  7. Nicholas P. McKenna, M.D., M.S.

    Nicholas P. McKenna, M.D., M.S.

    1. Colon and Rectal Surgeon
    Areas of focus:

    Colonoscopy, Robotic surgery, Colorectal surgery, Rectal cancer surgery, Colectomy, Proctectomy, Colostomy, Ileoanal an...astomosis surgery, Colon cancer surgery, Anorectal surgery, Laparoscopic surgery, Small bowel resection, Ileostomy surgery, Bowel resection, Hemorrhoidectomy, Hemorrhoidal banding, Colon cancer, Crohn's disease, Inflammatory bowel disease, Ulcerative colitis, Hemorrhoids, Anal cancer, Colon polyps, Rectal cancer, Diverticulitis, Anal fissure, Anal fistula, Familial adenomatous polyposis, Anal squamous cell carcinoma, Polyposis syndromes, Perianal abscess

  8. Nicholas R. Oblizajek, M.D.

    Nicholas R. Oblizajek, M.D.

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

    Colonoscopy, Anorectal function testing, Esophagoscopy, Endoscopic procedure, Breath testing, Anorectal manometry, Gast...roesophageal reflux disease, Functional bowel disorder, Gastroparesis, Diarrhea, Functional dyspepsia, Constipation, Pelvic floor dysfunction

  9. Philip N. Okafor, M.D.

    Philip N. Okafor, M.D.

    1. Gastroenterologist
    1. Jacksonville, FL
    Areas of focus:

    Colonoscopy, Flexible sigmoidoscopy, Upper endoscopy, Fecal transplant, Capsule endoscopy, Polyp, Gastroesophageal refl...ux disease, Anemia, Irritable bowel syndrome, Helicobacter pylori infection, Fecal incontinence, Chronic constipation, Chronic diarrhea

  10. William C. Palmer, M.D.

    William C. Palmer, M.D.

    1. Gastroenterologist
    1. Jacksonville, FL
    Areas of focus:

    Colonoscopy, Flexible sigmoidoscopy, Upper endoscopy, Hemochromatosis, Liver disease, Gastrointestinal disorder, Iron o...verload

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