Associate Professor JP Leider is the founding director of the SPH Center for Public Health Systems (CPHS), where he collaborates with faculty, staff, and students across SPH to support public health practice and conduct public health systems research and evaluation.

Assistant Professor Xiao Zang evaluates health equity and public health interventions aiming to prevent and treat HIV/AIDS and opioid overdose mortality using simulation modeling methods. His areas of expertise include simulation modeling, model calibration, cost-effectiveness analysis, distributional cost-effectiveness analysis, and quasi-experimental methods.