Sabrina Witherby, MD


Sabrina M. Witherby, MD, is a hematologist/oncologist at Lifespan Cancer Institute. She is an assistant professor of medicine at The Warren Alpert Medical School of Brown University. She specializes in breast cancer and hematology and has particular interest in geriatric oncology, supportive care in oncology and medical education.

Dr. Witherby was named one of Rhode Island Monthly’s Top Docs in 2017 and awarded the Beckwith Family Teaching Award from The Warren Alpert Medical School of Brown University in 2013. She is a member of the American Society of Clinical Oncology, the Massachusetts Medical Society, and the Association of Program Directors in Internal Medicine. 



Lifespan Cancer Institute, Rhode Island Hospital
Ambulatory Patient Center (APC Building) (directions)
110 Lockwood St.
Providence, RI 02903


  • Medical School:  University of Massachusetts Medical School
  • Residency:  Rhode Island Hospital
  • Fellowship:  University of Vermont