The Consequences of Health Care Privatization: Evidence from Medicare Advantage Exits 

With Mark Duggan and Jon Gruber, AEJ: Economic Policy, 2018, 10: 153-186. 

Media Coverage: New York Times, Academy Health, NBER Digest

Awards: 2019 NIHCM Finalist

Who Benefits When the Government Pays More? Pass-Through in the Medicare Advantage Program

With Mark Duggan and Amanda Starc, Journal of Public Economics, 2016, 141: 50-67.

Media Coverage: Los Angeles Times, Bloomberg, Modern Healthcare, Marginal Revolution, Knowledge at Wharton, Health Affairs Blog


Private Versus Public Provision of Social Insurance: Evidence from Medicaid (with Tim Layton, Nicole Maestas, and Daniel Prinz)

Conditionally Accepted, AEJ: Economic Policy

(Originally Released as NBER Working Paper #26042)

Media Coverage: NBER Digest, Brookings, VoxEU, CATO Institute

The Behavioral Foundations of Default Effects: Theory and Evidence from Medicare Part D (with Zarek Brot-Goldberg, Tim Layton, and Adelina Yanyue Wang)

Revise and Resubmit, American Economic Review

(Originally Released as NBER Working Paper #28331)

The Value of Improving Insurance Quality: Evidence from Long-Run Medicaid Attrition (with Ajin Lee)


Efficiency Gains Under Incomplete Contracting: Evidence from Medicaid

Cost-Sharing Among Those Who Can't Pay: The Impact of Medicaid Disenrollments (with Zarek Brot-Goldberg and Pauline Mourot) New draft coming soon!


Rationing Medicine Through Paperwork: Prior Authorization Restrictions in Medicare (with Zarek Brot-Goldberg, Sam Burn, and Tim Layton)

How Are Part D Plans Different? Evidence from Randomly Assigned Enrollees (with Tim Layton, Daniel Prinz, and Anna Zink)

Grading State Medicaid Programs (with Tim Layton, Nicole Maestas, Daniel Prinz, and Mark Shepard)