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William Freed-Pastor, MD, PhD

Medical Oncology

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William Freed-Pastor, MD, PhD


  • Physician
  • Instructor in 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 the Dana-Farber Cancer Institute specializing in gastrointestinal cancers. Dr. Freed-Pastor received his M.D., Ph.D. from Columbia University College of Physicians and Surgeons. Following the successful completion of his MD/PhD, Dr. Freed-Pastor completed his residency training in Internal Medicine at Massachusetts General Hospital, followed by a Medical Oncology fellowship at the Dana-Farber Cancer Institute. Dr. Freed-Pastor also conducts research in the laboratory of Dr. Tyler Jacks at the Koch Institute for Integrative Cancer Research at MIT, one of the Lustgarten Foundation dedicated pancreatic cancer research laboratories. His research focuses on developing improved pre-clinical and co-clinical models for pancreatic cancer, with a particular emphasis on understanding the role of the immune system during pancreatic tumor development and offering insights into 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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