Sam Kosai is a doctoral student in Sociology and Social Policy. They are interested in understanding how the U.S. medical and criminal justice systems intersect to produce and reinforce systemic inequalities, with specific respect to the policies regulating substance use and their implications on carceral inequality.

Prior to coming to Princeton, Sam was a public health analyst at RTI International in the Center for Behavioral Health Epidemiology, Implementation, and Evaluation Research. Their work focused on designing, implementing, and evaluating programs related to substance use disorder treatment access within the criminal legal system, sexual violence prevention in the LGBTQ+ community, and mental health risk and resilience in K-12 schools. 

Sam earned a BA in sociology from the University of Southern California, where they were a Mellon Mays Fellow.