We study public vs. private provision of health care for veterans aged 65 and older who may receive care provided by the US Department of Veterans Affairs (VA) and in private hospitals financed by Medicare. Utilizing the ambulance design of Doyle et al. (2015), we find that the VA reduces 28-day...

We measure organizational concentration—the distribution of a patient's healthcare across organizations—to examine how firm boundaries affect healthcare efficiency. First, when patients move to regions where outpatient visits are typically concentrated within a small set of firms, their...

How does team-specific capital affect productivity? We examine the teams that primary care physicians (PCPs) assemble when referring patients to specialists. Our theoretical model finds that team-specific capital is greater when PCPs concentrate their referrals within a smaller set of...