Dr. Lehmann attended Harvard College and received her MD from Duke University Medical School, where, after finishing a pediatric residency, she spent a year as chief resident. She completed a pediatric  hematology-oncology fellowship at DFCI/Children's Hospital Boston and subsequently joined the faculty. Currently, she is an Associate professor in the Division of Hematopoietic Stem Cell Transplantation at  Dana Farber Cancer Institute/Boston Children’s Hospital and the Associate Program Director for Education/Training and Quality. She has a long-standing interest in global health and has worked to  develop pediatric oncology programs in Baghdad, Mexico and Rwanda and a fellowship training program in Cairo at the world’s largest pediatric oncology hospital . She is currently collaborating with the Abu Dhabi Stem Cell institute to build their pediatric stem cell transplant capacity.