Neff Walker

Dr. Neff Walker is a Senior Scientist in the Department of International Health at the Johns Hopkins Bloomberg School of Public Health and a key member of the Institute for International Programs (IIP). His work centers on evaluating large-scale reproductive, maternal, newborn, and child health (RMNCH) programs and modeling their impact. He is the Principal Investigator for the RADAR initiative and the Lives Saved Tool (LiST), widely used to estimate intervention outcomes. Prior to joining JHSPH, he served as a senior advisor at UNICEF and UNAIDS, focusing on disease burden modeling and impact estimation for HIV/AIDS and child health. Dr. Walker holds a PhD in Cognitive Psychology from Columbia University and brings decades of statistical and epidemiological expertise to global health research.