Most Social Security Disability Insurance (DI) beneficiaries must complete a 5-month waiting period before they become entitled to DI cash benefits and an additional 24-month waiting period before Medicare benefits begin. The Accelerated Benefits (AB) demonstration is a randomized experiment...

Primary care physicians have a central, coordination role in medicine, yet little is known about their impacts on healthcare utilization. I study the short-run and long-run effects of switching to different primary care physicians on utilization in terms of spending among Medicare patients over...