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 Metabolic and Abdominal Wall Reconstructive Surgery in Rochester 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 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 active 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: R Elizabeth Rajan, M.D. Gastroenterologist Rochester, MN Areas of focus: Upper endoscopy, Endoscopic ultrasound, Balloon-assisted enteroscopy, Capsule endoscopy Francisco C. Ramirez, M.D. Internist Gastroenterologist Phoenix, AZ Areas of focus: Upper endoscopy, Colon cancer Douglas L. Riegert-Johnson, M.D. Internist Gastroenterologist Medical Geneticist Jacksonville, FL Areas of focus: Upper endoscopy, Colonoscopy, Fecal transplant, Chromoendoscopy, Pancreatic cancer, Familial adenomatous polyposis, Lyn...ch syndrome Show more areas of focus for Douglas L. Riegert-Johnson, M.D. Lindsey A. Russell, M.D. Gastroenterologist Nutrition Specialist Areas of focus: Upper endoscopy, Colonoscopy, Flexible sigmoidoscopy, PEG-J tube placement, Capsule endoscopy, Nasogastric tube inserti...on, PEG tube placement, Double balloon enteroscopy, Small bowel stricture dilation, Celiac disease, Microscopic colitis, Short bowel syndrome, High output ileostomy, Malnutrition, Malabsorption, Pancreatic insufficiency Show more areas of focus for Lindsey A. Russell, M.D. Research Profiles Edit search filters close Narrow your search By location Arizona Florida Minnesota View all View all physicians • All Locations Rajan, Elizabeth M.D. Minnesota 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. 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Learn more about this top honor Upper endoscopyAboutDoctors&Departments PRC-20395182 Tests & Procedures Upper endoscopy