Meet our team
Our staff of compassionate and experienced pediatric subspecialists includes oncologists, radiation oncologists, radiologists and pathologists.
Every member of our team is focused on family-centered care: From your first visit, you’ll work with a core group of professionals who are committed to supporting all of your family’s physical and psychosocial needs.
Lewis B. Silverman, MD, Medical Director
Silverman is the Medical Director of both the Leukemia and Lymphoma Programs at Dana-Farber/Children’s Hospital Cancer Center (DF/CHCC). A pediatric oncologist who specializes in the treatment of Acute Lymphoblastic Leukemia (ALL), he is the principal investigator of our clinical trials for children and adolescents with newly diagnosed ALL and oversees all clinical research for patients with relapsed ALL. His primary research focus is improving ALL therapies while reducing toxicity. Silverman is also the medical director of the Inpatient Oncology Service at Children’s and chairs the Pediatric Scientific Review Committee for DF/CHCC. In addition to his clinical and research responsibilities, he is an associate professor of Pediatrics at Harvard Medical School.
Scott A. Armstrong, MD, PhD, Co-Director
Armstrong is co-director of both the Leukemia and Lymphoma Programs at DF/CHCC. He is primarily based in the laboratory, where he works with other investigators to identify and develop new leukemia treatments for children and adolescents. He collaborates closely with Dr. Silverman and other members of the clinical team in the conception of new and innovative clinical trials. Armstrong is also an associate professor of Pediatrics at Harvard Medical School.
Amy L. Billett, MD
Billett is a pediatric oncologist who has worked at DF/CHCC since 1987. She specializes in the treatment of lymphomas, including Hodgkin lymphoma, non-Hodgkin lymphoma and Burkitt’s lymphoma. In addition, she oversees clinical safety and quality research for the Hematology/Oncology Department. Billett is also an associate professor of Pediatrics at Harvard Medical School.
Barbara A. Degar, MD
Degar is a pediatric hematologist-oncologist. Her research and clinical expertise focus on the treatment of acute myelogenous leukemia (AML) and Langerhan cell histiocytosis. She is an assistant professor of Pediatrics at Harvard Medical School.
Mark Daniel Fleming, MD, DPhil
Fleming is Children’s pathologist-in-chief. He is a hematopathologist who specializes in the diagnosis of cancers of the blood and lymph systems. His research focuses on iron metabolism in the blood, and he is an associate professor of Pathology at Harvard Medical School.
Leslie E. Lehmann, MD
Lehmann is the clinical director of the DF/CHCC Pediatric Stem Cell Transplantation Program. She specializes in bone marrow and stem cell transplantation and the long-term effects of these transplants. Lehmann is also an assistant professor of Pediatrics at Harvard Medical School.
Karen J. Marcus, MD
Marcus is chief of the DF/CHCC Division of Radiation Oncology. She treats young patients with leukemias and a variety of other childhood cancers, including brain tumors, sarcomas, neuroblastoma, kidney tumors and Hodgkin lymphoma. Marcus is also an associate professor of Radiation Oncology at Harvard Medical School and co-chair of the Pediatric Oncology Institutional Review Board.
Stephen E. Sallan, MD
Sallan has worked for DF/CHCC since 1975 and specializes in the treatment of acute lymphoblastic leukemia (ALL). He currently serves as Dana-Farber Cancer Institute’s Chief of Staff, and is the chair of the Institutional Review Board, which oversees clinical research. Sallan is also a professor of Pediatrics at Harvard Medical School.
Stephan D. Voss, MD, PhD
Voss is division chief of Oncologic Imaging and a staff radiologist and researcher at Children’s. His research focuses on developing new methods for imaging malignant disease. Voss is also an associate professor of Radiology at Harvard Medical School.
Lynda Vrooman, MD
Vrooman is a pediatric hematologist-oncologist who specializes in the care of leukemia patients. Her research interest is in the late effects of treatment. In addition to taking care of newly diagnosed patients, she is also an attending physician in the Perini Long-Term Follow-Up Clinic.
Joanne Wolfe, MD, MPH
Wolfe is the director of the Pediatric Advanced Care Team (PACT) and is widely recognized for her pediatric palliative care expertise. She and other members of PACT participate in regional and national efforts to improve care for children with advanced illness.