• AEA
  • About the AEA
  • Committees
  • Honors & Awards
  • For Graduate Students
  • For Undergrad Students
  • News & Notes
  • Officers
  • General Information
  • Minutes
  • UA Questionnaire
  • Continuing Education
  • Directory of Members
  • Call for Papers
  • Media
• Journals
  • AEJ: Applied Economics
  • AEJ: Economic Policy
  • AEJ: Macroeconomics
  • AEJ: Microeconomics
  • American Economic Review
  • Journal of Economic Literature
  • Journal of Economic Perspectives
  • eTOCs
  • Virtual Field Journals
  • Institutional Subscriptions
  • AEA Journals on JSTOR
  • Ads in Journals
  • Back Issues Order Forms
  • Copyright & Permissions
• Annual Meeting
  • Submissions
  • Registration/Housing
  • Preliminary Program
  • ASSA 2013 App
  • Annual Meeting Papers
  • Annual Meeting Webcasts
  • Disclosure Code Information
  • Exhibitors
  • Exhibitors & Advertisers Forms
  • Special Event Form
  • Continuing Education
  • Econ-Harmony
  • Archive of Past Programs
• EconLit
  • EconLit Access
  • EconLit Deskop Link
  • EconLit for Members
  • JEL Codes Guide
  • JEL Classifications
  • Journal List
  • Contacts/Corrections
  • Upcoming Exhibits
  • Document Types
  • Search Hints
• Jobs
  • JOE Listings
  • Submit a JOE Listing
  • Job Market Signaling
  • Job Market Scramble
  • Available Retired Faculty
• Resources
  • Resources For Economists
  • RFE Abridged Contents
  • RFE Search
  • RFE Conferences
  • Econ Search Engine
• Members
  • Member Login
  • Become a Member
  • Directory of Members
  • EconLit for Members
  • AEA Journals on JSTOR
  • Econ-Harmony
  • Annual Meeting Webcasts
  • Browse JEL Indexes
  • Virtual Field Journals
  • Institutional Subscriptions

View Settings

This setting lets you change the way you view articles. You can choose to have articles open in a dialog window, a new tab, or directly in the same window.

Open in Dialog
Open in New Tab
Open in same window

American Economic Review: Vol. 102 No. 2 (April 2012)

AER Volume. 102, Issue 2 | Previous ArticleNext Article

Expand

Quick Tools:

Print Article Summary Email Link to this Article

To Email:

From Email:

Message:

Email Link to Article Change Captcha Export Citation

BibTeX EndNote Refer/BibIX RIS Tab-Delimited Export Sign up for Email Alerts Follow us on Twitter

Explore:

AER - All Issues

AER Forthcoming Articles

Paying a Premium on Your Premium? Consolidation in the US Health Insurance Industry

Article Citation

Dafny, Leemore, Mark Duggan, and Subramaniam Ramanarayanan. 2012. "Paying a Premium on Your Premium? Consolidation in the US Health Insurance Industry." American Economic Review, 102(2): 1161-85.

DOI: 10.1257/aer.102.2.1161

Abstract

We examine whether and to what extent consolidation in the US health insurance industry has contributed to higher employer-sponsored insurance premiums. We exploit the differential impact across local markets of a national merger of two insurers to identify the causal effect of concentration on premiums. Using data for large groups, we estimate premiums in average markets were approximately seven percentage points higher by 2007 due to increases in local concentration from 1998-2006. We also find evidence consolidation facilitates the exercise of monopsonistic power vis-à-vis physicians, leading to reductions in their absolute employment and earnings relative to other healthcare workers. (JEL G22, I13)

Article Full-Text Access

Full-text Article

Additional Materials

Download Data Set (80.23 KB) | Online Appendix (805.60 KB)

Authors

Dafny, Leemore (Northwestern U)
Duggan, Mark (U PA)
Ramanarayanan, Subramaniam (UCLA)

JEL Classifications

G22: Insurance; Insurance Companies
I13: Health Insurance, Public and Private