Dylan H. Roby, PhD, is an affiliate at the UCLA Center for Health Policy Research. He is also chair and professor of health, society, and behavior at the UC Irvine Joe C. Wen School of Population & Public Health. Roby collaborates with colleagues at UCLA on the California Simulation of Insurance Markets (CalSIM) microsimulation model, and is a member of UCLA's cost analysis team for the California Health Benefit Review Program. 

In his role at UC Irvine, Roby conducts research on Medicaid, the health care safety net, and the Affordable Care Act's implications for insurance markets, system redesign and access to care. He teaches courses on health politics and policy in the BA, MPH, and PhD programs in public health.

Roby was the former director (2012–2014) of the Health Economics and Evaluation Research (HEER) Program at the UCLA Center for Health Policy Research, where he helped developed the Center's capacity for analysis of Medicaid claims data, Medicaid waiver evaluation, and conducting confidential data analyses and surveys. He served as the associate director of the MPH program from 2010–2012. Prior to becoming the HEER program director, he was a senior researcher at the Center from 2003–2011.

Before returning to UCLA, Roby worked for four years as a senior research associate at The George Washington University Center for Health Services Research and Policy. He worked on safety net issues, including data analysis and research on community health centers and public hospitals. During his time in Washington, DC, he also worked for the National Association of Community Health Centers, the National Governors' Association's Center for Best Practices, and the Progressive Policy Institute. Roby was also an instructor at The George Washington University Department of Health Policy. Prior to that, he was a research assistant at the UCLA Center for Health Policy Research.

Roby graduated from UCLA with a bachelor's degree in geography and a minor in public policy. He earned his doctoral degree in public policy from The George Washington University.