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 + Richard (Rich) Gonzalez, PhD Mathematical models for judgement and decision making Matthias Kretzler, MD Enhancing health for kidney disease treatment Margaret (Maggie) Levenstein, PhD, MA Economic behavior and methodology in regards to health care supply chains