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 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 Jacksonville, FL Phoenix/Scottsdale, AZ Rochester, MN 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 There are no doctors 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 active 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 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 1-4 out of 4 doctors available Last Name Initial: K Allon Kahn, M.D. Gastroenterologist Phoenix, AZ Areas of focus: Colonoscopy, Upper endoscopy, Endoscopic mucosal resection, Radiofrequency ablation, Cryotherapy, Esophageal dilatation..., Dysphagia, Barrett's esophagus, Esophageal cancer, Achalasia, Gastroesophageal reflux disease, Eosinophilic esophagitis, Esophagitis, Esophageal stricture Show more areas of focus for Allon Kahn, M.D. Sahil Khanna, M.B.B.S., M.S. Gastroenterologist Rochester, MN Areas of focus: Colonoscopy, Flexible sigmoidoscopy, Fecal transplant, Upper endoscopy, Inflammatory bowel disease, Constipation, Diarr...hea, Functional dyspepsia, C. difficile infection, Functional bowel disorder Show more areas of focus for Sahil Khanna, M.B.B.S., M.S. Jami A. Kinnucan, M.D. Gastroenterologist Women's Health Specialist Jacksonville, FL Areas of focus: Colonoscopy, Flexible sigmoidoscopy, Upper endoscopy, Ulcerative colitis, Inflammatory bowel disease, Crohn's disease, ...Microscopic colitis, Pregnancy Show more areas of focus for Jami A. Kinnucan, M.D. Andree H. Koop, M.D. Gastroenterologist Jacksonville, FL Areas of focus: Colonoscopy, Flexible sigmoidoscopy, Upper endoscopy, Dysphagia, Barrett's esophagus, Achalasia, Gastroesophageal reflu...x disease, Eosinophilic esophagitis, Esophageal stricture Show more areas of focus for Andree H. Koop, M.D. By Mayo Clinic Staff Request an appointment About July 02, 2024 Print Show 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. Picco MF (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 April 26, 2024, 03:00 p.m. CDT Mayo Clinic in Rochester, Minnesota, has been recognized as the best Gastroenterology & GI Surgery hospital in the nation for 2024-2025 by U.S. News & World Report. Learn more about this top honor Upper endoscopyAboutDoctors&Departments PRC-20395182 Patient Care & Health Information Tests & Procedures Upper endoscopy