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 + David Guenther, JD Social enterprises, maternal health, rural communities Timothy (Tim) Hofer, MD, MS Quality improvement and healthcare delivery John Lazarus, MD, PhD Cardiovascular health, emergency response Rockefeller Oteng, MD Emergency medical systems Gurpreet Rana, MLIS Global health initiatives David (Dave) Ripin, PhD Prevention and treatment of infectious diseases