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

Jennifer W. Mack, MD, MPH

  • Associate Chief, Division of Population Sciences
  • Senior Physician
  • Associate Professor in Pediatrics, Harvard Medical School

Appointment Phone

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


  • 617-632-2270


Treatment Centers




Board Certifications

  • Pediatric Hematology/Oncology, 2004
  • Pediatrics, 2001


  • Boston Children's Hospital/Dana-Farber Cancer Institute, Pediatric Hematology/Oncology, 2004
  • Boston Children's Hospital/Dana-Farber Cancer Institute, Pediatric Palliative Care


  • Boston Combined Residency Program, Boston Children's Hospital/Boston Medical Center, Pediatrics, 2001


  • Children's Hospital Boston, Pediatrics, 1999

Medical School

  • Harvard Medical School, 1998


Dr. Mack received her medical degree from Harvard Medical School 1998. She subsequently completed her residency in Pediatrics and her fellowship in Pediatric Hematology Oncology and Pediatric Palliative Care at Children's Hospital Boston and Dana-Farber Cancer Institute. In 2005, Dr. Mack received a master's in Public Health from the Harvard School of Public Health. She is an attending physician in the Jimmy Fund Clinic and at Children's Hospital Boston. Her research interests are in parent-physician and patient-physician communication, health care quality, and palliative care.


Pediatric Oncology, Palliative Care, Outcomes Research

As a pediatric oncologist, I have a particular interest in cancer-related communication as a model for all difficult conversations. Much of my work focuses on communication about the cancer diagnosis, cancer treatment decision-making, and the transition to palliative care, where communication can have a major impact on the care that unfolds at the end of life.  I have developed clinical expertise in communication through dedicated inpatient and outpatient care of childhood cancer patients, created a body of research that defines specific attributes and outcomes of high quality communication, and trained pediatric hematology/oncology fellows and other physicians to communicate effectively with patients and families.

Physician Video