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Mark Daniel Fleming | Education

Undergraduate School

Princeton University

1987, Princeton, NJ

Graduate School

DPhil, Organic Chemistry

University of Oxford

1990, Oxford, England

Medical School

Harvard Medical School

1993, Boston, MA


Brigham and Women's Hospital

1997, Boston, MA


Brigham and Women's Hospital

1997, Boston, MA

Mark Daniel Fleming | Certifications

  • American Board of Pathology (Anatomic Clinical Pathology)
  • American Board of Pathology (Anatomic Hematopathology)

Mark Daniel Fleming | Professional History

Dr. Mark Daniel Fleming is a hematopathologist and Boston Children’s Hospital's Pathologist-In-Chief. He specializes diagnosis of cancers of the blood and lymph systems. His research focuses on iron metabolism in the blood. In addition, he is an associate professor of Pathology at Harvard Medical School.


Dr. Fleming serves as an expert for the Department of Pathology for Boston Children's Hospital Precision Medicine Service. For more information about the Precision Medicine Service please visit

Mark Daniel Fleming | Publications