Nickhill is a clinical fellow in the Department of Epidemiology at St. Jude Children's Research Hospital in Los Angeles. He is applying Markov Chain Monte Carlo and Markov cohort methods to simulate the natural morbidity and early mortality experienced by childhood cancer survivors. He is interested in developing pediatric cancer prioritization metrics and management algorithms to treat cancers and blood diseases for children who live in low and middle-income settings. After Brown he conducted operational Tuberculosis research in Eldoret, Kenya, received an M.P.H. from Harvard University, attended medical school at the University of Cincinnati, and completed his residency at the Children's Hospital of Los Angeles.