Karen J. Marcus, MD

Chief, Division of Radiation Oncology, Boston Children's Hospital

Institute Physician

Associate Professor of Radiation Oncology, Harvard Medical School
Office Phone: 617-732-8821
Appointment Phone: 617-732-8821
Fax: 617-394-2668
Preferred Contact Method: office phone


Treatment Centers
Radiation Oncology
Clinical Interests
Hematopoietic stem cell transplantation, Hodgkin disease, Late effects of treatment in children, Neuroblastoma, Neuro-oncology, Pediatric radiation oncology, Pediatric sarcoma and bone tumors


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


Board Certifications
Pediatrics, 1985
Therapeutic Radiology, 1989
National Cancer Institute, Pediatric Oncology, 1986
Children's Hospital of Philadelphia, Pediatrics, 1983
Harvard Joint Center for Radiation Therapy, Radiation Therapy, 1989
Medical School
University of Maryland School of Medicine, 1980

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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.