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 Critical Care Early-Onset and Hereditary GI Cancers Program Early-Onset Colorectal Cancer Group Gastroenterology and Hepatology Pediatric Hematology/Oncology Trauma, Critical Care and General Surgery in Rochester Doctors who perform this procedure Edit search filters close Narrow your search By location Rochester, MN Phoenix/Scottsdale, AZ 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 There are no doctors 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 Find a doctor whose last name begins with the letter I I 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 Find a doctor 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 active 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 There are no doctors 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 1-5 out of 5 doctors available Last Name Initial: S William Sanchez, M.D. Internist Gastroenterologist Transplant Hepatologist Rochester, MN Areas of focus: Colonoscopy, Liver biopsy, Upper endoscopy, Post-liver transplant care, Pre-liver transplant evaluation, Cholangiocarci...noma, Hepatitis C, Hepatocellular carcinoma, Nonalcoholic fatty liver disease, Cirrhosis, Liver cancer, Gallbladder cancer, Hepatic encephalopathy, Chronic liver disease Show more areas of focus for William Sanchez, M.D. Dan A. Schupack, M.D. Gastroenterologist Rochester, MN Areas of focus: Colonoscopy, Upper endoscopy, Colon cancer, Lynch syndrome, Familial adenomatous polyposis, Polyposis syndromes Robert E. Sedlack, M.D., M.H.P.E. Gastroenterologist Rochester, MN Areas of focus: Colonoscopy, Upper endoscopy, Endoscopic mucosal resection, Gastrostomy tube placement, Therapeutic endoscopy, Endoscop...ic procedure, Endoscopic biopsy, Polypectomy, Esophageal stenting, Esophageal dilation, Esophageal foreign body , Colon polyps, Esophageal varices, Esophageal stricture Show more areas of focus for Robert E. Sedlack, M.D., M.H.P.E. Doug A. Simonetto, M.D. Internist Gastroenterologist Transplant Hepatologist Rochester, MN Areas of focus: Colonoscopy, Liver biopsy, Upper endoscopy, Cirrhosis, Alcoholic hepatitis, Alcoholic liver disease, Hepatic encephalop...athy, Portal hypertension, Chronic liver disease, Budd-Chiari syndrome, Fontan-associated liver disease Show more areas of focus for Doug A. Simonetto, M.D. Sid Singh, M.B.B.S. Gastroenterologist Phoenix, AZ Areas of focus: Colonoscopy, Upper endoscopy, Crohn's disease, Ulcerative colitis, Microscopic colitis Research Profiles Edit search filters close Narrow your search By location Arizona Florida Minnesota View all View all physicians • Arizona By Mayo Clinic Staff Request an appointment About July 02, 2024 PrintShow references Feldman M, et al., eds. Preparation for and complications of gastrointestinal endoscopy. In: Sleisenger and Fordtran's Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management. 11th ed. Elsevier; 2021. https://www.clinicalkey.com. Accessed Aug. 4, 2022. Cohen J, et al. Overview of upper gastrointestinal endoscopy (esophagogastroduodenoscopy). https://www.uptodate.com/contents/search. Accessed Aug. 4, 2022. Upper GI endoscopy. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/diagnostic-tests/upper-gi-endoscopy. Accessed Aug. 4, 2022. Understanding upper endoscopy. American Society for Gastrointestinal Endoscopy. https://www.asge.org/home/for-patients/patient-information/understanding-upper-endoscopy. Accessed Aug. 4, 2022. Medical review (expert opinion). Mayo Clinic. Aug. 16, 2022. Related Anthrax Barrett's esophagus Bile reflux Blastocystis hominis Burns Carcinoid tumors Chagas disease Chronic sinusitis Cyclic vomiting syndrome Dysphagia Endoscopy Endoscopy Eosinophilic esophagitis Esophageal cancer Esophageal spasms Esophageal varices Esophagitis Functional dyspepsia Gastritis Gastroesophageal reflux disease (GERD) Gastrointestinal tract Gastroparesis Heartburn Helicobacter pylori (H. pylori) infection Hiatal hernia Indigestion Infant reflux Intestinal ischemia Iron deficiency anemia Median arcuate ligament syndrome (MALS) Oral thrush Peptic ulcer Sinus headaches Stomach cancer Stomach polyps Vocal cord paralysis Zollinger-Ellison syndrome Show more related content News from Mayo Clinic AI may help predict risk of Barrett's esophagus and esophageal cancer Mayo Clinic in Rochester, Minnesota, has been recognized as the best Gastroenterology & GI Surgery hospital in the nation by U.S. News & World Report. Learn more about this top honor Upper endoscopyAboutDoctors&Departments PRC-20395182 Tests & Procedures Upper endoscopy