Adrienne M. Hammill, MD, PhD, is a pediatric hematologist-oncologist at Cincinnati Children's. She specializes in treating hemangiomas and vascular anomalies, including conditions with associated vascular malformations in the brain. Dr. Hammill is the research director of the Hemangioma and Vascular Malformations Center and participates in the Cerebrovascular Clinic. Her research focuses on understanding the natural history of these diseases and developing better treatments through clinical trials.