Dr. Gradishar is a board-certified medical oncologist with more than 25 years experience caring for patients with breast cancer. He completed his medical school training at the University of Illinois Abraham School of Medicine,
a residency and chief residency in Internal Medicine at Michael Reese Hospital and Medical Center in Chicago, and a fellowship in Medical Oncology at the University of Chicago. He is a Diplomate of the American Board of Internal Medicine in both Internal Medicine and Medical Oncology.

He is a member of several professional organizations including the American College of Physicians (Fellow), the American Society of Clinical Oncology (ASCO), American Association for Cancer Research, American Federation for Clinical Research, Association of Subspecialty Professors, and the American Society of Breast Disease. He has served on several ASCO committees, including the Publications Committee, the Oncology Training Program Committee (Chair), and the Cancer Communications Committee (Chair). He is a member of the Board of Directors of the American Society of Breast Diseases.

Dr. Gradishar is a member of the Breast Cancer Core Committee of the Eastern Cooperative Oncology Group. He is a member of several expert panels including the National Comprehensive Cancer Network (NCCN) Breast Cancer Practice Guideline Committee, the NCCN Breast Cancer Prevention Committee, and the Oncology Drug Advisory Committee (ODAC) of the FDA. He has served on the ASCO Chemoprotectant Expert Panel. He has been
a member of several study sections including: Susan G. Komen Breast Cancer Foundation, the Committee on Cell Structure and Metastases of the American Cancer Society, Cell Biology Committee of the American Cancer Society, Department of Defense Breast Cancer Research Program [(1) Epidemiology and (2) Clinical and Experimental Therapeutics], NIH National Action Plan on Breast Cancer.

Dr. Gradishar serves on the editorial board of several journals, including the Journal of Clinical Oncology, Clinical Cancer Research, Breast Cancer, and the European Journal of Medical Oncology. He is Editor-in-Chief of Journal Watch Oncology/Hematology. He has published extensively in the area of breast cancer therapeutics with a focus on new endocrine therapy and chemotherapy. His research interest focuses on the development of novel therapeutics for the treatment of breast cancer.