Ann W. Hsing is a professor of medicine at Stanford University. She is a senior fellow for the Center for Innovation in Global Health at Stanford University. She graduated Summa Cum Laude from China Medical College. She received an M.P.H. in Biostatistics from the University of California at Los Angeles and obtained her M.D. in Epidemiology from Johns Hopkins University. She received a Post-doctoral Fellowship from Johns Hopkins University and the Division of Cancer Epidemiology and Genetics, National Cancer Institute. She has conducted population-based epidemiological studies on four continents: North and South America, Asia, Africa, and Europe. She is a leading expert in the epidemiology and etiology of prostate, hepatobiliary, and thyroid cancers as well as in hormonal carcinogenesis and circadian rhythm. Throughout her 22-year tenure at the National Cancer Institute, she has developed extensive expertise in molecular epidemiology, global oncology, cancer prevention, and population-based studies in international settings. She has served on numerous committees and advisory boards, most recently as a member of the Editorial Board of Cancer Epidemiology, Biomarkers & Prevention and as an academic editor of PLoS ONE.