Colonoscopy

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Doctors who perform this procedure

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Displaying 1-6 out of 6 doctors available

Last Name Initial: M

  1. Harmeet Malhi, M.B.B.S.

    Harmeet Malhi, M.B.B.S.

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

    Upper endoscopy, Colonoscopy, Post-liver transplant care, Pre-liver transplant evaluation, Hepatic encephalopathy, Nona...lcoholic fatty liver disease, Liver injury, Nonalcoholic steatohepatitis

  2. Talha A. Malik, M.D.

    Talha A. Malik, M.D.

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

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

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

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

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

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

  4. Daniel B. Maselli, M.D.

    Daniel B. Maselli, M.D.

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

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

  5. Kellie L. Mathis, M.D.

    Kellie L. Mathis, M.D.

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

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

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

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

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

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

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