Appointments and 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.

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Find Clinical Trials

We sponsor and collaborate on clinical trials that break new ground in pediatric cancer and blood disorder treatment. 

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Our Affiliations
HMS Affiliate

Dana-Farber/Boston Children's is a teaching affiliate of Harvard Medical School.

Our Affiliations

John T. Horan, MD, MPH

  • Physician
  • Associate Professor of Pediatrics, Harvard Medical School

Appointment Phone

  • 617-632-3270 (Established Pediatric Patients)
  • 888-733-4662 (New Pediatric Patients)


  • 617-632-2095


Treatment Centers


Clinical Interests

Adolescents and young adult oncology



Board Certifications

  • Pediatric Hematology/ Oncology, 2000
  • Pediatrics, 1996


  • Children's National Medical Center and University of Rochester, Pediatric Hematology-Oncology, 2000
  • University of Rochester Medical Center, Blood and Marrow Transplantation, 1997


  • University of Rochester Medical Center, 1996

Medical School

  • Rutgers-New Jersey Medical School, 1993

Physician Video