Research

Journal Publications

"Data Impediments to Empirical Work on Health Insurance Markets," with David Dranove, Frank Limbrock, and Fiona Scott Morton. The B.E. Journal of Economic Analysis & Policy: 11(2) Contributions, Article 8.

"Paying a Premium on Your Premium? Consolidation in the U.S. Health Insurance Industry" with Mark Duggan and Subramaniam Ramanarayanan. Non-technical NBER Digest summary here. American Economic Review, forthcoming. Longer version available as NBER Working Paper 15434.

“The Impact of Tort Reform on Employer-Sponsored Health Insurance Premiums,” with Ronen Avraham and Max Schanzenbach, November 2010, Journal of Law, Economics, and Organizations, forthcoming. Older version available as NBER Working Paper 15371. Non-technical NBER Bulletin summary here.

"Are Health Insurance Markets Competitive?" American Economic Review, September 2010, 100(4): 1399-1431. Online Appendix here. Non-technical NBER Digest summary here.

"An Individual Healthplan Exchange: Which Employees Would Benefit and Why?" American Economic Review Papers and Proceedings, May 2010.

"Estimation and Identification of Merger Effects: An Application to Hospital Mergers," The Journal of Law & Economics, August 2009, 52: 523-550.

"Regulatory Exploitation and the Market for Corporate Control," with David Dranove, The Journal of Law & Economics, May 2009, 52: 223-250

"Do Report Cards Tell Consumers Anything They Don't Already Know? The Case of Medicare HMOs," with David Dranove, The RAND Journal of Economics, Autumn 2008, 39(3): 790-821. Non-technical NBER Digest summary here.

“How Do Hospitals Respond to Price Changes?” American Economic Review, December 2005, 95(5): 1525-1541. Non-technical NBER Bulletin summary here.

“Games Hospitals Play: Entry Deterrence in Hospital Procedure Markets,” Journal of Economics and Management Strategy, Fall 2005, 14(3): 513-542.

“Public Insurance and Child Hospitalizations: Access and Efficiency Effects,” with Jonathan Gruber, Journal of Public Economics, 2005, 89(1): 109-129

Policy Publications

"Designing Transparency Systems for Medical Care Prices," New England Journal of Medicine, March 10, 2011; 364:894-895.

"A Competitive Process for Procuring Health Services: A Review of Principles with an Application to Cataract Services," SPP Research Paper: The Health Series, 2009. The School of Public Policy, University of Calgary 2(5).

Working Papers

"Let them Have Choice: Gains from Shifting away from Employer-Sponsored Health Insurance and Toward an Individual Exchange," July 2011, with Katherine Ho and Mauricio Varela. Revised and resubmitted to American Economic Journal: Economic Policy.

“Are For-Profit Health Insurers Different?" with Subramaniam Ramanarayanan, October 2010, mimeo.

Research in Progress

"Competition in Quality: The Case of U.S. Dialysis Clinics," with David Cutler and Christopher Ody

“Does Multimarket Contact Soften Competition? The U.S. Dialysis Industry,” with David Cutler and Katherine Ho

“What Explains the Rise in Self-Insured Employer Healthplans?”, with Kosali Simon