Assistant Professor
Department of Economics
Grand Valley State University 

My primary research interests are in the fields of health economics and applied microeconometrics. I am particularly interested in areas relating to health insurance, health care utilization, and the industrial organization of health care markets. In addition, I've conducted research on health behaviors, health determinants, and substance abuse. 

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Contact Information:
Department of Economics
Seidman College of Business
Grand Valley State University
50 Front Ave. SW
Grand Rapids, MI 49504-6424

Email: callisok@gvsu.edu
Phone: (614) 989-1764