CHEPS Faculty & Staff


Amy Cohn PhD, Faculty Director

Amy Ellen Mainville Cohn (she/her) is an Arthur F. Thurnau Professor in the Department of Industrial and Operations Engineering at the University of Michigan, where she also holds an appointment in the Department of Health Management and Policy in the School of Public Health. Dr. Cohn is the Faculty Director of the Center for Healthcare Engineering and Patient Safety (CHEPS). She holds an A.B. in applied mathematics, magna cum laude, from Harvard University and a PhD in operations research from the Massachusetts Institute of Technology. Her primary research interests are in applications of combinatorial optimization, particularly to healthcare and aviation, and to the challenges of optimization problems with multiple objective criteria. She values teaching, mentoring, having a positive impact on society through her work, and helping to foster a vibrant, diverse, nurturing community. She and her husband Jonathan are the proud parents of two sons, Tommy and Peter. 



Liz Fisher, Marketing and Communications Specialist

Liz (she/they) has worked in the College of Engineering since January, 2005 and has been with CHEPS since 2013. She is also an alum of the University of Michigan School of Education. Liz handles all things communications at CHEPS including the website, social media, newsletter, and helping students with papers, posters, and presentations. They’re a big fan of poetry, cats, and The Great British Bake-Off.



Gene Kim, Administrative Assistant

Gene (they/she/he – I’ve been called them all and they all work for me) has worked at CHEPS for over 10 years and the U for 15. They hold an MBA with EMU and a BA with U-M. They enjoy dancing ballet five times a week and spending time in the garden.


William Pozehl, Research Area Specialist

Billy Pozehl (he/him) is a Research Specialist at CHEPS. He began working at the Center as an undergraduate student researcher and holds BSE and MSE degrees in Industrial and Operations Engineering. He has been full-time staff since 2015. He enjoys helping our student CHEPSters brainstorm the challenges they face as they work on our projects and spends his free time watching Michigan sports.


Zhang Student Photo

Daiwen Zhang, Research Fellow

Daiwen Zhang (he/him) is a Reseach Fellow at CHEPS. He began working at CHEPS in the summer of 2021 after earning his MS in Industrial and Operations Engineering here at the University of Michigan.