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 that treat this condition Gastroenterology and Hepatology Trauma, Critical Care and General Surgery in Rochester Doctors who treat this condition Edit search filters close Narrow your search By location Jacksonville, FL Rochester, MN By last name There are no doctors whose last name begins with the letter A A There are no doctors 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 There are no doctors whose last name begins with the letter E E There are no doctors whose last name begins with the letter F F There are no doctors whose last name begins with the letter G G There are no doctors whose last name begins with the letter H H There are no doctors whose last name begins with the letter I I There are no doctors whose last name begins with the letter J J There are no doctors whose last name begins with the letter K K There are no doctors whose last name begins with the letter L L There are no doctors whose last name begins with the letter M M There are no doctors whose last name begins with the letter N N Find a doctor whose last name begins with the letter O O There are no doctors whose last name begins with the letter P P There are no doctors whose last name begins with the letter Q Q There are no doctors whose last name begins with the letter R R There are no doctors 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 There are no doctors whose last name begins with the letter V V There are no doctors 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 1-2 out of 2 doctors available Johanna L. Chan, M.D. Gastroenterologist Jacksonville, FL Areas of focus: Colonoscopy, Flexible sigmoidoscopy, Upper endoscopy, Constipation, Colon polyps, Gastroesophageal reflux disease, Gast...rointestinal bleeding, Peptic ulcer, Diarrhea Show more areas of focus for Johanna L. Chan, M.D. Amy S. Oxentenko, M.D. Internist Gastroenterologist Rochester, MN Areas of focus: Celiac disease, Peptic ulcer, Gastrointestinal disorder, Malabsorption syndrome, Gastritis ResearchMayo Clinic doctors and scientists are studying new ways to diagnose and treat digestive diseases, including peptic ulcers. PublicationsSee a list of publications about peptic ulcers by Mayo Clinic doctors on PubMed, a service of the National Library of Medicine. Research Profiles Edit search filters close Narrow your search By location Arizona Florida Minnesota View all View all physicians • All Locations DeVault, Kenneth R. M.D. Florida By Mayo Clinic Staff Peptic ulcer care at Mayo Clinic Request an appointment Diagnosis & treatmentCare at Mayo Clinic Aug. 16, 2024 Print Related Ulcers Associated Procedures Needle biopsy Upper endoscopy X-ray Products & Services A Book: Mayo Clinic on Digestive Health Peptic ulcerSymptoms&causesDiagnosis&treatmentDoctors&departmentsCare atMayoClinic Research: It's all about patients Show transcript for video Research: It's all about patients [MUSIC PLAYING] Joseph Sirven, M.D., Professor of Neurology, Mayo Clinic: Mayo's mission is about the patient. The patient comes first. So the mission and research here is to advance how we can best help the patient, how to make sure the patient comes first in care. So in many ways, it's a cycle. It can start with as simple as an idea worked on in a laboratory, brought to the patient bedside, and if everything goes right — and let's say it's helpful or beneficial — then brought on as a standard approach. And I think that is one of the unique characteristics of Mayo's approach to research — that patient-centeredness — that really helps to put it in its own spotlight. CON-20198824 Patient Care & Health Information Diseases & Conditions Peptic ulcer