Mark B. Geyer MD

Mark B. Geyer, MD, is an Assistant Attending Physician on the Leukemia and Cell Therapy Services in the Department of Medicine at Memorial Sloan Kettering Cancer Center (MSK), and Assistant Professor of Medicine at Weill Cornell Medical College. He serves as Leader of the Adolescent and Young Adult Program for the Leukemia Service.

Dr. Geyer received his medical degree from Columbia University College of Physicians and Surgeons. He completed his internal medicine residency at Massachusetts General Hospital, followed by a fellowship in hematology/medical oncology at MSK.

Dr. Geyer’s research interests include the development of safe and effective therapies for patients with acute lymphoblastic leukemia (ALL) and other lymphoid malignancies, as well as development of cellular immunotherapy (including chimeric antigen receptor-modified T-cell therapies) for hematologic malignancies. He leads multiple investigator-initiated studies at MSK.

Dr. Geyer is a member of the NCCN Hematopoietic Growth Factors Panel.