Mark D. Fleming, MD, DPhil

Pathologist-in-Chief, Boston Children's Hospital

S. Burt Wolbach Professor of Pathology, Harvard Medical School
Office Phone: 617-919-2664
Appointment Phone: 617-919-2664
Fax: 617-730-0168
Preferred Contact Method: appointment phone


Treatment Centers
Clinical Interests
Iron metabolism, Pediatric hematopathology


Boston Children's Hospital
300 Longwood Ave.
Boston, MA  02115


Board Certifications
Anatomic Pathology
Boston Children's Hospital, Hematology/Oncology, 2000
Brigham and Women's Hospital, Hematopathology, 1996
Brigham and Women's Hospital, Anatomic Pathology, 1995
Brigham and Women's Hospital, Senior Resident, Surgical Pathology, 1996
Medical School
Harvard Medical School, 1993

Appointments & Second Opinions

Speak with one of our New Patient Coordinators to schedule an appointment, refer a patient or request a second opinion. In urgent cases, we can typically see new patients within 24 hours.

Clinical Trials

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Harvard Medical Affiliate

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As a teaching affiliate of Harvard Medical School, our physicians are passing on their expertise to the next generation of pediatric hematologists and oncologists.