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 There are no doctors 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: Ulcerative colitis, Inflammatory bowel disease, Crohn's disease, Pouchitis Massimo Raimondo, M.D. Jacksonville, FL Area of Focus: Colonoscopy, Endoscopic ultrasound, Upper endoscopy, Endoscopic mucosal resection, Fine needle aspiration, Endoscopic biopsy, Endoscopic full-thickness biopsy, Pancreatic cancer, Pancreatic neuroendocrine tumor, Colon polyps, Pancreatitis, Pancreatic cyst, Pancreatic insufficiency Elizabeth Rajan, M.D. Rochester, MN Area of Focus: Endoscopic ultrasound, Upper endoscopy, Capsule endoscopy, Balloon assisted endoscopy Francisco C. Ramirez, M.D. Phoenix, AZ Area of Focus: Upper endoscopy, Colon cancer Karthik Ravi, M.D. Rochester, MN Area of Focus: Achalasia, Gastroesophageal reflux disease, Eosinophilic esophagitis, Esophageal spasms Douglas L. Riegert-Johnson, M.D. Jacksonville, FL Area of Focus: Colonoscopy, Upper endoscopy, Fecal transplant, Chromoendoscopy, Lynch syndrome, Pancreatic cancer, Familial adenomatous polyposis 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, Cirrhosis, Liver problems, Primary sclerosing cholangitis, Cholangiocarcinoma, Liver cancer, Alcoholic hepatitis, Autoimmune hepatitis, Hepatocellular carcinoma, Hepatopulmonary syndrome, Primary biliary cholangitis, Nonalcoholic fatty liver disease Kevin C. Ruff, M.D. Phoenix, AZ Area of Focus: Balloon assisted endoscopy, Nutrition (Healthy eating) Kristy K. Rumer, M.D., Ph.D. Rochester, MN Medical Professionals Digestive Diseases Physicians