John O. Mascarenhas, MD

Professor of Medicine
Tisch Cancer Institute, Division of Hematology/Oncology
Icahn School of Medicine at Mount Sinai
New York, New York

Dr. John Mascarenhas is an Associate Professor of Medicine at the Icahn School of Medicine at Mount Sinai (ISMMS) and a member of the Tisch Cancer Institute in New York City. He is the Director of the Adult Leukemia Program and Leader of Clinical Research within the Myeloproliferative Disorders Program at Mount Sinai. As a clinical investigator in malignant hematology with a focus in translational research involving myeloproliferative neoplasms (MPNs), he is primarily responsible for the clinical trials portion of the Myeloproliferative Disorders Program at ISMMS. Dr. Mascarenhas is also the principal investigator (PI) of the clinical trials project within the National Cancer Institute sponsored Myeloproliferative Neoplasms Research Consortium (MPN-RC). He has served as PI or study chair of multiple investigator-initiated and industry-sponsored early- and late-phase clinical trials evaluating innovative approaches to the treatment of MPNs and secondary leukemia.
Last modified: January 17, 2023