Hansoo Ko

Titles and Organizations

Assistant Professor, HAP

Contact Information

Email: hko20@gmu.edu 

Personal Websites


Dr. Hansoo Ko is assistant professor in the Department of Health Administration and Policy. Hansoo is a public health physician and health services researcher with training in health economics. His research spans health economics, health services research, and health policy, with a focus on individual behavioral responses and insurance markets. His work uses Medicaid administrative data sets to understand the role and consequences of policy changes. His research has been funded by the World Health Organization, the Robert Wood Johnson Foundation.

Hansoo earned a PhD in health economics/health policy from University of Illinois at Chicago and an MD from Chung-Ang University College of Medicine (Korea). Before coming to Mason, he was a postdoctoral research associate at New York University Robert F. Wagner Graduate School of Public Service.


Research Interests

  • Health Economics
  • Health Services Research
  • Health Policy

Select Publications

Ko H, Glied SA. 2021. Mandated paid sick leave and changes in healthcare utilization among low-income adults: Evidence from New York State. JAMA Health Forum 2: e210342. https://doi.org/10.1001/jamahealthforum.2021.0342

Ko H, Glied SA. 2021. Robotic prostatectomy and prostate-cancer related Medicaid spending: Evidence from New York State. Journal of General Internal Medicine. https://doi.org/10.1007/s11606-021-06680-1

Ko H. 2021. Behavioral responses to the 2015 MERS epidemic in Korea. Economics & Human Biology 41: 100965. https://doi.org/10.1016/j.ehb.2020.100965

Ko H. 2020. The effect of outdoor smoking ban: Evidence from Korea. Health Economics 29: 278-293. https://doi.org/10.1002/hec.3979

Ko H. 2020. Moral hazard effects of supplemental private health insurance in Korea. Social Science & Medicine 265: 113325. https://doi.org/10.1016/j.socscimed.2020.113325

Ko H. 2020. Child health impacts of the Nepalese civil war. Review of Development Economics. https://doi.org/10.1111/rode.12735

Ko H, Kim MJ. 2020. Impacts of expanding provider choice for free flu vaccination among the elderly in Korea. Health Policy 124: 1115-1120. https://doi.org/10.1016/j.healthpol.2020.07.014

Ko H. 2019. Offsetting effects of outpatient cost-sharing for the poor in Korea. Medical Care 57: 648-653. https://doi.org/10.1097/MLR.0000000000001136

Ko H. 2019. Intergenerational effects of old-age pension on children’s health and wellbeing. International Journal of Health Planning and Management 34: e1208-1214. https://doi.org/10.1002/hpm.2759

Ko H, Kim H, Yoon CG, Kim CY. 2018. Social capital as a key determinant of willingness to join community-based health insurance: Household survey in Nepal. Public Health 160: 52-61. https://doi.org/10.1016/j.puhe.2018.03.033

Ko H. 2016. Unmet Healthcare needs and health status: panel evidence from Korea. Health Policy 120(6): 646-53. https://doi.org/10.1016/j.healthpol.2016.04.005


“Innovative Mechanisms for Marketing Health Insurance: An Experimental Field Test”, Robert Wood Johnson Foundation, Grant number 78643, 2021-2023, $388,244 (Consultant).

“Evaluation of the Health for All (HEFA) project in Paraguay”, World Health Organization Pan-American Health Organization (WHO PAHO), 2017-2019, $300,000 (Co-Principal Investigator).


  • PhD, Health Economics/Policy, University of Illinois at Chicago, 2019
  • MPH, Health Care Management and Policy, Seoul National University (Korea), 2008
  • MD, Medicine, Chung-Ang University (Korea), 2002