M.D., M.S.
Gastroenterologist
University of Vermont College of Medicine, Burlington, VT
Internal Medicine - Los Angeles County Hospital, University of Southern California, Los Angeles, CA
Gregory Idos, M.D., M.S., is a board-certified gastroenterologist with specialized training in cancer genetics and an associate professor in the Center for Precision Medicine at City of Hope® Cancer Center Duarte. His clinical expertise includes caring for individuals with inherited disorders such as Lynch syndrome and familial adenomatous polyposis, while his research aims to improve cancer screening and deliver more effective, personalized care for patients who have higher hereditary risk of developing cancer.
Known for his rare blend of clinical excellence and scientific insight, Dr. Idos’ patients praise his combination of empathy and dedication to advancing cancer care. A recipient of numerous accolades, he continues to play a vital role in City of Hope’s mission to use precision medicine to detect, treat and prevent cancer more effectively.
After earning his undergraduate degree at the University of California, Los Angeles, Dr. Idos received his medical degree from the University of Vermont in Burlington. He completed his residency at the Keck School of Medicine at the University of Southern California in Los Angeles, where he also earned a master’s degree in clinical and biomedical investigations. He then went on to complete a gastroenterology fellowship at Brigham and Women’s Hospital at Harvard Medical School.
Today, Dr. Idos serves as an associate professor in the Division of Gastroenterology at City of Hope, where he leads a large, multicenter study on the risks and benefits of multiplex genetic testing. His research also explores new technologies for assessing hereditary cancer risk and he is developing innovative cell models to study the biology behind Lynch syndrome and microsatellite instability.