Find a Doctor Disclaimer
“Find a Doctor” is operated by Lifespan and includes all physicians who are on the medical staffs of Lifespan-affiliated hospitals, without any charge to them. Selection is based upon your needs and preferences. Search results will first present, in alphabetical order, physicians employed or contracted with Lifespan or its affiliates, followed by an alphabetical listing of physicians who are in Lifespan’s network of affiliated providers. At the end of that initial list, you can access an alphabetical listing of community physicians with privileges at Lifespan hospitals. All physicians in Find a Doctor have the opportunity to have a picture or video posted on the site. Neither the order of physicians, nor the presence or absence of a photo or video, in Find a Doctor is intended to reflect any preference, priority, or recommendation by Lifespan. Find a Doctor search results are also not based on the volume or value of referrals to Lifespan or its affiliates from any listed physician. Users are free to select their physician of choice from among all Lifespan-affiliated medical staff physicians.
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.
- Medical School: University of Massachusetts Medical School
- Residency: Rhode Island Hospital
- Fellowship: University of Vermont