Dr. Rebecca O'brien, MD

Dr. Rebecca F. O’Brien, MD, is an attending physician in the Division of Adolescent and Young Adult Medicine at Boston Children’s Hospital and an assistant professor of pediatrics at Harvard Medical School. Board certified in adolescent medicine, she specializes in caring for adolescents and young adults with expertise in eating disorders, adolescent gynecology, reproductive health, and complex medical and emotional health concerns affecting teens and young adults. Dr. O’Brien earned her medical degree from the University of Massachusetts Medical School and completed her pediatric residency at the Floating Hospital for Children at Tufts–New England Medical Center, followed by fellowship training in adolescent medicine at Boston Children’s Hospital. Widely respected for her compassionate, multidisciplinary, and patient-centered approach, she is dedicated to supporting the physical and emotional well-being of adolescents and young adults through …comprehensive, developmentally informed care.