Susan O’Brien

Susan O’Brien, MD is Associate Director for Clinical Science for the Chao Family Comprehensive Cancer Center, Medical Director of the Sue and Ralph Stern Center for Cancer Clinical Trials and Research, and the Chao Family Endowed Chair for Cancer Clinical Science at the University of California Irvine. She earned her medical degree and completed her residency in internal medicine from the University of Medicine and Dentistry of New Jersey (UMDNJ) Medical School. Dr. O’Brien completed her fellowship and spent 30 years at MD Anderson Cancer Center, Houston, TX.

Dr. O’Brien has been a principal investigator for more than 40 funded clinical research protocols and has authored more than 800 articles in peer-reviewed journals, 30 invited articles, and numerous book chapters and abstracts. She is the hematology representative to the Southwest Oncology Group Executive Committee, and the Hematology Editor for the journal Cancer. She serves on the Medical Scientific Advisory Board for the Leukemia and Lymphoma Society. Year after year, she has been repeatedly ranked nationally as the top in her field by America’s Top Doctors, Super Docs, and America’s Top Doctors for Cancer.