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Leo Treyzon, MD, MS
Leo Treyzon, MD, MS is the Clinical Chief of the Division of Gastroenterology at Cedars-Sinai. He is a board certified specialist in clinical nutrition and gastroenterology. He specializes in the treatment of irritable bowel syndrome (IBS), Crohn’s and Colitis (IBD), gastro-esophageal reflux disease (GERD), ulcers (PUD), gastritis (H. Pylori), small intestinal bacterial overgrowth (SIBO), and cancers of the digestive tract. Common symptoms he treats include abdominal pain, gas, bloating, diarrhea, constipation, anemia and bleeding.
He is a participating physician and researcher in the Cedars-Sinai Weight Loss Center, Esophageal Center and Cancer Center. Dr. Treyzon performs procedures such as endoscopy, colonoscopy and wireless capsule endoscopy.
Dr. Treyzon lectures on subjects related to the field of gastroenterology, nutrition and functional abdominal pain. He is an assistant professor at the David Geffen School of Medicine at the University of California, Los Angeles (UCLA). As an educator he teaches the medical students, residents, and fellows who are training in gastroenterology. He has written many peer reviewed articles and textbook chapters on various gastrointestinal subjects.
Dr. Treyzon is an active member of the American College of Gastroenterology, American Society of Gastrointestinal Endoscopy, American Society of Physician Nutrition Specialists and American Society of Bariatric Physicians.
Dr. Treyzon earned his bachelor's degree with high honors from the University of California, Santa Barbara and his medical degree from the University of California, San Diego. He also earned a master's in clinical research from UCLA. He completed a residency at Cedars-Sinai in internal medicine and a fellowship in digestive diseases at UCLA.
Dr. Treyzon’s office for patient appointments is located at the Cedars-Sinai Medical Office Towers.