Mergers and Marginal Costs: New Evidence on Hospital Buyer Power

Stuart Craig, Matthew Grennan, Ashley Swanson

NBER Working Paper No. 24926
Issued in August 2018

---- Acknowledgments ----

The data used in this paper were generously provided, in part, by the ECRI Institute (www.ecri.org). We gratefully acknowledge financial support from the Wharton Dean’s Research Fund and Public Policy Initiative, the Wolpow Family, and NSF Grant 30067535. We thank Zack Cooper, Martin Gaynor, Charlie Gray, Matthew Schmitt, and John Van Reenen for assistance in constructing the merger panel. Harrison Byers, Caleb Diaz-Spatharos, and Gi Heung Kim provided excellent research assistance. Any errors are our own. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.

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