Doctors 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. Find doctors and medical staff: Edit search filters close Narrow your search Doctor's Name, Condition Or Procedure By location Rochester, MN Jacksonville, FL 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 Find a doctor 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 Find a doctor whose last name begins with the letter S S Find a doctor whose last name begins with the letter T T Find a doctor 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 Find a doctor whose last name begins with the letter Y Y There are no doctors whose last name begins with the letter Z Z By conditions treated No results found By procedures performed No results found By spoken language No results found 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 121-130 out of 190 doctors available Daniel B. Maselli, M.D. Gastroenterologist Rochester, MN Areas of focus: Upper endoscopy, Colonoscopy, Intragastric balloon procedure, Transoral outlet reduction, Endoscopic sleeve gastroplast...y, Endoscopic mucosal resection, Endoscopic biopsy, Endoscopic dilation, Endoscopic re-cellularization via electroporation therapy, Gastroesophageal reflux disease, Diarrhea, Obesity, Metabolic syndrome, Gastrointestinal bleeding, Constipation, Colon polyps, Esophageal stricture, Colonic dysmotility, Fatty liver disease, Esophageal varices, Gastrointestinal infection, Gastrointestinal fistula Show more areas of focus for Daniel B. Maselli, M.D. Laurence J. Miller, M.D. Internist Gastroenterologist Phoenix, AZ Areas of focus: Pancreatic neuroendocrine tumor, Zollinger Ellison Syndrome Omar Y. Mousa, M.B.B.S., M.D. Transplant Hepatologist Jacksonville, FL Areas of focus: Liver transplant, Post-transplant long-term care, Pre-liver transplant evaluation, Hepatic encephalopathy, Hepatocellul...ar carcinoma, Cirrhosis, Nonalcoholic fatty liver disease, Primary biliary cholangitis, Cholangiocarcinoma, Primary sclerosing cholangitis, Acute liver failure, Autoimmune hepatitis, Hemochromatosis, Alcoholic hepatitis, Metabolic liver disease Show more areas of focus for Omar Y. Mousa, M.B.B.S., M.D. Joseph A. Murray, M.D. Internist Gastroenterologist Rochester, MN Areas of focus: Celiac disease, Achalasia Vandana Nehra, M.D. Gastroenterologist Rochester, MN Areas of focus: Upper endoscopy, Colonoscopy, Esophageal dilation, Capsule endoscopy, Polypectomy, Gastroesophageal reflux disease, Cel...iac disease, Colitis, Gastrointestinal disorder, Colon polyps, Malabsorption, Nutrition (Healthy eating) Show more areas of focus for Vandana Nehra, M.D. Cuong C. Nguyen, M.D. Gastroenterologist Phoenix, AZ Areas of focus: Upper endoscopy, Endoscopic retrograde cholangiopancreatography, Endoscopic ultrasound, Gastroesophageal reflux disease Nicholas R. Oblizajek, M.D. Gastroenterologist Rochester, MN Areas of focus: Colonoscopy, Endoscopic procedure, Anorectal manometry, Esophagoscopy, Breath testing, Anorectal function testing, Pelv...ic floor dysfunction, Gastroesophageal reflux disease, Diarrhea, Functional dyspepsia, Constipation, Gastroparesis, Functional bowel disorder Show more areas of focus for Nicholas R. Oblizajek, M.D. Philip N. Okafor, M.D. Gastroenterologist Jacksonville, FL Areas of focus: Upper endoscopy, Colonoscopy, Flexible sigmoidoscopy, Fecal transplant, Capsule endoscopy, Fecal incontinence, Chronic ...constipation, Gastroesophageal reflux disease, Irritable bowel syndrome, Anemia, Helicobacter pylori infection, Polyp, Chronic diarrhea Show more areas of focus for Philip N. Okafor, M.D. Jody C. Olson, M.D. Hepatologist Rochester, MN Areas of focus: Hepatocellular carcinoma, Cirrhosis, Alcoholic liver disease, Hepatitis C, Hepatitis B, Primary biliary cholangitis, Pr...imary sclerosing cholangitis, Wilson's disease, Portal hypertension, Autoimmune hepatitis, Polycystic liver disease, Hemochromatosis, Alcoholic hepatitis, Hepatopulmonary syndrome, Fontan-associated liver disease Show more areas of focus for Jody C. Olson, M.D. Amy S. Oxentenko, M.D. Internist Gastroenterologist Rochester, MN Areas of focus: Diarrhea, Celiac disease, Microscopic colitis, Malabsorption syndrome, Gastrointestinal disorder, Gastritis Pagination Doctor search PrevPrevious Page Go to page 1111 Go to page 1212 Go to page 1313 Go to page 1414 Go to page 1515 NextNext Page Learn more about the Mayo Clinic Department of Gastroenterology and Hepatology location nearest you: Gastroenterology and Hepatology in Rochester, Minnesota Gastroenterology and Hepatology in Jacksonville, Florida Gastroenterology and Hepatology in Scottsdale, Arizona Request an appointment Conditions treatedDoctors by location and specialty Feb. 05, 2026 Share on: FacebookTwitter 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 Gastroenterology and HepatologyDepartmenthomeSectionsOverviewTests & proceduresConditions treatedDoctorsDoctors by location and specialtySpecialty groupsExpertise & rankingsClinical trialsResearchPatient storiesCosts & insuranceNews from Mayo ClinicReferrals SectionsRequest an AppointmentOverviewTests & proceduresConditions treatedDoctorsDoctors by location and specialtySpecialty groupsExpertise & rankingsClinical trialsResearchPatient storiesCosts & insuranceNews from Mayo ClinicReferrals ORG-20308333 Medical Departments & Centers Gastroenterology and Hepatology