Joyce A. O’Shaughnessy

Dr. O’Shaughnessy specializes in medical oncology with board certification in both internal medicine and medical oncology. She is a Diplomate of the American Board of Internal Medicine with subspecialty certification in medical oncology. She is also Director of Breast Cancer Research at Baylor-Sammons Cancer Center and Chair of Breast Cancer Research for The US Oncology Network. Dr. O’Shaughnessy focuses her clinical research on breast cancer treatment, especially in Genotype-Phenotype correlations for high-risk breast cancers and immunotherapy for triple-negative breast cancer.

Dr. O’Shaughnessy has received numerous awards and honors, including Giants of Cancer Care: Community Outreach/Education Award; Baylor University Medical Center: Staff Chief’s award; Holy Cross College: Santae Crucis Award (Distinguished Alumni Award): Public Health Service Special Service: Development of the Consensus Statement on Cancer Drug Approval Endpoints Award; Yale Medical School: Francis Parker Award (Faculty Choice for Most Promising Clinician). She is also Associate Editor for Clinical Breast Cancer Journal, and Founder of The School of Breast Oncology.

Dr. O’Shaughnessy received her M.D. from Yale University Medical School. Her internship and residency in internal medicine were completed at Massachusetts General Hospital in 1985. She concluded a fellowship in medical oncology at the National Cancer Institute in 1987 and was a Senior Investigator there until 1995.