Dr. Dunleavy grew up in Ireland, where he was interested in medicine from a young age. He earned his medical degree from University College Dublin and completed fellowships in medical oncology at University College Dublin and the National Cancer Institute (NIH), where he continued to work after his fellowship as an attending physician and clinical director of the Lymphoid Malignancies Branch. Before joining MedStar Health, Dr. Dunleavy was professor of medicine, director of the lymphoma program, and co-director of the microbial oncology program in the Division of Hematology and Oncology at George Washington University Cancer Center