CGHE members span the University of Michigan and the globe, including faculty experts, research collaborators, scholars, and community partners. Search for Members with Keywords, Sponsors, Locations, or Categories + Matthew (Matt) Boulton, MD, MPH Health disparities in vaccine preventable diseases Timothy (Tim) Hofer, MD, MS Quality improvement and healthcare delivery Uttam Sharma, PhD Development economics, program evaluation, health and education Hang Yu, PhD, MA Development economics, health impact analysis