Patient cost-sharing for primary care and prescription drugs is designed to reduce the prevalence of moral hazard in utilization. Yet the success of this strategy depends on two factors: the elasticity of demand for those medical goods, and the risk of downstream hospitalizations by reducing...

There is widespread agreement that the US healthcare system wastes as much as 5% of GDP, yet little consensus on what care is actually unproductive. This partly arises because of the endogeneity of patient choice of treatment location. This paper uses the effective random assignment of patients...

Parallel reimbursement regimes, under which providers have some discretion over which payer gets billed for patient treatment, are a common feature of health care markets. In the U.S., the largest such system is under Workers' Compensation (WC), where the treatment workers with injuries that are...