Yaa Akosa Antwi, PhD

Assistant Professor
Academic AreaEconomics
Academic AreaManagement & Organization
Academic AreaHealth
Areas of InterestEconomics for Decision-making Health Economics Health Care Strategy

Yaa Akosa Antwi, PhD (Applied Economics and Management, Carnegie Mellon University) joined the Johns Hopkins Carey Business School in 2016. She is an Assistant Professor in the research track with expertise in the areas of health economics and policy. Prior to joining Carey, she was Assistant Professor in the Department of Economics at Indiana University-Purdue University Indianapolis.


  • Ph. D., Applied Economics and Management, Carnegie Mellon University 
  • MS, Public Policy and Management, Carnegie Mellon University
  • BA, Economics and Computer Science, Knox College


Selected publications

  • "Medicaid Coverage for Births after ACA’s Dependent Coverage." (2015)(with Jie Ma, Kosali Simon and Aaron Carroll) New England Journal of Medicine 374(2), 194-196.
  • “Changes in Emergency Department Use among Young Adults after the ACA’s Dependent Coverage Provision” (2015) (with Asako Moriya, Kosali Simon and Ben Sommers) Annals of Emergency Medicine 65(6), 664-672
  • “Access to Health Insurance and the Use of Inpatient Medical Care: Evidence from the Affordable Care Act Young Adult Mandate, ” (2015) (with Asako Moriya and Kosali Simon)  Journal of Health Economics 39 171–187
  • “Effects of Federal Policy to Insure Young Adults: Evidence from the 2010 Dependent Coverage Mandate” (2013) (with Asako Moriya and Kosali Simon) American Economic Journal: Economic Policy 5(4): 1-28.
  • "A Bargain at Twice the Price? California Hospital Prices in the New Millennium,"(2009) (with Martin Gaynor and William B. Vogt) Forum for Health Economics & Policy: Vol. 12: Issue 1 (Frontiers in Health Policy Research), Article 3.

Working papers

  •  “A Competition Index for Differentiated Products Oligopoly with an Application to Hospital Markets” (with Martin Gaynor and William B. Vogt)
  • “Access to health insurance and utilization of public sector substance use treatment: Evidence from the Affordable Care Act dependent coverage provision.” (with Ben Cook, Catherine Maclean, and Brendan Saloner) 
  • “The Impact of Nurse Turnover and Quality of care: Evidence from the Great Recession”( with John Bowblis) 
  • “State Health Insurance Mandates and Labor Market Outcomes: New Evidence on Old Questions”(with Catherine Maclean)
  • "The Impact of Income on the use of Medical Care: Evidence from the Social Security Notch Cohort"



  • Economics for Decision Making
  • Providers and Payers