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.

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Displaying 61-70 out of 72 doctors available

  1. Gui Piovezani Ramos, M.D.

    Gui Piovezani Ramos, M.D.

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

    Colonoscopy, Flexible sigmoidoscopy, Upper endoscopy, Ulcerative colitis, Crohn's disease, Microscopic colitis, Immune-...related adverse event

  2. Douglas L. Riegert-Johnson, M.D.

    Douglas L. Riegert-Johnson, M.D.

    1. Internist
    2. Gastroenterologist
    3. Medical Geneticist
    1. Jacksonville, FL
    Areas of focus:

    Colonoscopy, Fecal transplant, Upper endoscopy, Chromoendoscopy, Lynch syndrome, Familial adenomatous polyposis, Pancre...atic cancer

  3. Jewel J. Samadder, M.D.

    Jewel J. Samadder, M.D.

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

    Endoscopic procedure, Colonoscopy, Endoscopic mucosal resection, Lynch syndrome, Familial adenomatous polyposis, Barret...t's esophagus, Peutz-Jeghers syndrome, Juvenile polyposis syndrome, Cowden syndrome, MUTYH-associated polyposis, BRCA gene mutation

  4. William Sanchez, M.D.

    William Sanchez, M.D.

    1. Internist
    2. Gastroenterologist
    3. Transplant Hepatologist
    1. Rochester, MN
    Areas of focus:

    Colonoscopy, Upper endoscopy, Liver biopsy, Pre-liver transplant evaluation, Post-liver transplant care, Nonalcoholic f...atty liver disease, Cirrhosis, Hepatitis C, Cholangiocarcinoma, Liver cancer, Hepatocellular carcinoma, Gallbladder cancer, Chronic liver disease, Hepatic encephalopathy

  5. Dan A. Schupack, M.D.

    Dan A. Schupack, M.D.

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

    Colonoscopy, Upper endoscopy, Lynch syndrome, Colon cancer, Familial adenomatous polyposis, Polyposis syndromes

  6. Robert E. Sedlack, M.D., M.H.P.E.

    Robert E. Sedlack, M.D., M.H.P.E.

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

    Endoscopic procedure, Colonoscopy, Upper endoscopy, Endoscopic mucosal resection, Therapeutic endoscopy, Polypectomy, E...sophageal dilation, Gastrostomy tube placement, Esophageal stenting, Endoscopic biopsy, Colon polyps, Esophageal varices, Esophageal stricture, Esophageal foreign body

  7. Doug A. Simonetto, M.D.

    Doug A. Simonetto, M.D.

    1. Internist
    2. Gastroenterologist
    3. Transplant Hepatologist
    1. Rochester, MN
    Areas of focus:

    Colonoscopy, Upper endoscopy, Liver biopsy, Cirrhosis, Alcoholic liver disease, Portal hypertension, Alcoholic hepatiti...s, Budd-Chiari syndrome, Chronic liver disease, Hepatic encephalopathy, Fontan-associated liver disease

  8. Diana L. Snyder, M.D.

    Diana L. Snyder, M.D.

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

    Colonoscopy, Esophageal manometry, Esophageal dilation, Achalasia, Gastroesophageal reflux disease, Eosinophilic esopha...gitis, Esophageal spasms

  9. Eric J. Vargas Valls, M.D., M.S.

    Eric J. Vargas Valls, M.D., M.S.

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

    Colonoscopy, Endoscopic sleeve gastroplasty, Endoscopic ultrasound, Intragastric balloon procedure, Upper endoscopy, ER...CP, Transoral outlet reduction, Endoscopic ultrasound-guided gallbladder drainage, Endoscopic re-cellularization via electroporation therapy, Endoscopic retrograde cholangiopancreatography-guided transpapillary gallbladder drainage, Obesity, Polyp, Esophageal varices, Pancreatic cancer, Cholangiocarcinoma, Pancreatic neuroendocrine tumor, Pancreatitis, Intestinal obstruction, Bile duct stone, Bile duct stricture, Cholecystitis, Pancreatic necrosis, Bile duct injury, Esophageal stricture

  10. Maria I. Vazquez Roque, M.D., M.S.

    Maria I. Vazquez Roque, M.D., M.S.

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

    Colonoscopy, Fecal transplant, Upper endoscopy, Capsule endoscopy, Argon plasma coagulation, Esophageal dilation, GI mo...tility test, Scleroderma, Fecal incontinence, Pelvic floor dysfunction, Constipation, Celiac disease, C. difficile infection, Recurrent infection, Malabsorption syndrome

Feb. 28, 2024
  1. Colonoscopy. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/diagnostic-tests/colonoscopy. Accessed April 1, 2022.
  2. Lee L, et al. Overview of colonoscopy in adults. https://www.uptodate.com/contents/search. Accessed April 1, 2022.
  3. AskMayoExpert. Colorectal cancer: Screening and management (adult). Mayo Clinic; 2021.
  4. Screening for colorectal cancer: U.S. Preventive Services Task Force Recommendation Statement. Journal of the American Medical Association. 2021; doi:10.1001/jama.2021.6238.
  5. A-Rahim YI. Bowel preparation before colonoscopy in adults. https://www.uptodate.com/contents/search. Accessed April 1, 2022.
  6. 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.
  7. Medical review (expert opinion). Mayo Clinic. April 4, 2022.

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