Dr. Mary Landrigan-Ossar, MD, PhD

Mary Landrigan-Ossar, MD, PhD, FAAP, is director of Perioperative Services and a senior associate in perioperative anesthesia in the Department of Anesthesiology, Critical Care and Pain Medicine at Boston Children’s Hospital, as well as an assistant professor of anaesthesia at Harvard Medical School. She specializes in pediatric anesthesiology and perioperative care, with expertise in vascular anomalies, cerebrovascular procedures, and the management of children undergoing complex surgical interventions. Dr. Landrigan-Ossar earned her MD and PhD from the Icahn School of Medicine at Mount Sinai and completed her anesthesiology residency at Mount Sinai Medical Center, followed by fellowship training in pediatric anesthesia at Boston Children’s Hospital. Her clinical and academic work focuses on advancing perioperative safety, care coordination, and multidisciplinary anesthesia care for infants, children, and adolescents undergoing specialized surgical