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William Freed-Pastor, MD, PhD

Medical Oncology

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William Freed-Pastor, MD, PhD


  • Physician
  • Assistant Professor of Medicine, Harvard Medical School


Clinical Interests

  • Gastrointestinal cancer
  • Immune-based therapies for pancreatic cancer
  • Pancreatic cancer

Contact Information


Dr. Freed-Pastor is a medical oncologist and physician-scientist at Dana-Farber Cancer Institute and the Broad Institute of Harvard and MIT. He received his MD and PhD from Columbia University College of Physicians and Surgeons and subsequently completed residency in Internal Medicine at Massachusetts General Hospital and a fellowship in Medical Oncology at Dana-Farber Cancer Institute. Following a postdoctoral research fellowship in the laboratory of Dr. Tyler Jacks at MIT, Dr. Freed-Pastor joined the staff of Dana-Farber Cancer Institute and Brigham and Women's Hospital. He specializes in the treatment of patients with gastrointestinal cancers, with a particular focus on pancreatic cancer. He also directs a research laboratory that studies the role of the immune system during pancreatic tumor development and applies these insights to develop novel therapeutic approaches that leverage the immune system for the treatment of pancreatic cancer.

Board Certification:

  • Internal Medicine, 2016
  • Medical Oncology, 2019


  • Dana-Farber Cancer Institute/Brigham and Women's Hospital/Massachusetts General Hospital, Medical Oncology


  • Massachusetts General Hospital, Internal Medicine

Medical School:

  • Columbia University College of Physicians & Surgeons



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