Doctors 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 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 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 Find a doctor whose last name begins with the letter Z Z View All By Location: View All Rochester, MN Jacksonville, FL Phoenix/Scottsdale, AZ Laura E. Raffals, M.D. Rochester, MN Area of Focus: Inflammatory bowel disease, Ulcerative colitis, Crohn's disease, Pouchitis Elizabeth Rajan, M.D. Rochester, MN Area of Focus: Upper endoscopy, Endoscopic ultrasound, Balloon-assisted enteroscopy, Capsule endoscopy Francisco C. Ramirez, M.D. Phoenix, AZ Area of Focus: Upper endoscopy, Colon cancer Karthik Ravi, M.D. Rochester, MN Area of Focus: Gastroesophageal reflux disease, Achalasia, Eosinophilic esophagitis, Esophageal spasms Douglas L. Riegert-Johnson, M.D. Jacksonville, FL Area of Focus: Upper endoscopy, Colonoscopy, Fecal transplant, Chromoendoscopy, Pancreatic cancer, Familial adenomatous polyposis, Lynch syndrome Lewis R. Roberts, M.B., Ch.B., Ph.D. Rochester, MN Area of Focus: Hepatocellular carcinoma Barry G. Rosser, Jr., M.D. Jacksonville, FL Area of Focus: Liver transplant, Post-transplant long-term care, Pre-transplant evaluation, Hepatic encephalopathy, Liver cancer, Hepatocellular carcinoma, Cirrhosis, Nonalcoholic fatty liver disease, Primary biliary cholangitis, Cholangiocarcinoma, Primary sclerosing cholangitis, Liver disease, Autoimmune hepatitis, Alcoholic hepatitis, Hepatopulmonary syndrome Kevin C. Ruff, M.D. Phoenix, AZ Area of Focus: Balloon-assisted enteroscopy, Nutrition (Healthy eating) Kristy K. Rumer, M.D., Ph.D. Rochester, MN Area of Focus: Colorectal surgery, Rectal cancer surgery, Colon cancer surgery Lindsey A. Russell, M.D. Area of Focus: Upper endoscopy, Colonoscopy, Flexible sigmoidoscopy, PEG-J tube placement, Capsule endoscopy, Nasogastric tube insertion, PEG tube placement, Double balloon enteroscopy, Small bowel stricture dilation, Celiac disease, Microscopic colitis, Short bowel syndrome, High output ileostomy, Malnutrition, Malabsorption, Pancreatic insufficiency Medical Professionals Digestive Diseases Physicians