This article provides a selective review of the recent literature on econometric models of
network formation. I start with a brief exposition on basic concepts and tools for the statistical …

A “Nash equilibrium in Nash bargains” has become a workhorse bargaining model in
applied analyses of bilateral oligopoly. This paper proposes a noncooperative foundation for …

We evaluate the consequences of narrow hospital networks in commercial health care
markets. We develop a bargaining solution,“Nash-in-Nash with Threat of Replacement,” that …

Health insurers increasingly compete on their networks of medical providers. Using data
from Massachusetts's insurance exchange, I find substantial adverse selection against plans …

In this chapter we present empirical models of demand and supply in differentiated products
industries with an emphasis on the key ideas arising from the recent applied literature. We …

We study the welfare effects of offering choice over coverage levels—“vertical choice”—in
regulated health insurance markets. We emphasize that heterogeneity in efficient coverage …

This paper studies how changes in hospital ownership after private equity (PE) buyouts
impact hospital–insurer price negotiations and patient welfare. Estimating an empirical …

This paper develops a model of vertical markets with multiple upstream and downstream
firms. Networks of vertical relationships, negotiated contract terms for those relationships …

We develop a general, tractable framework of multilateral vertical contracting, which places
no restriction on tariffs and fully accounts for their impact on downstream competition …

In this chapter we outline the tools that have been developed to model and analyze
competition and regulation in health care markets, and describe particular papers that apply …