We use a five percent sample of Americans' credit bureau data, combined with a regression discontinuity approach, to estimate the effect of universal health insurance at age 65--when most Americans become eligible for Medicare--at the national, state, and local level. We find a 30 percent...

We study the impact of losing health insurance on criminal activity by leveraging one of the most substantial Medicaid disenrollments in U.S. history, which occurred in Tennessee in 2005 and lead to 190,000 non-elderly and non-disabled adults without dependents unexpectedly losing coverage....

Since the inception of Medicare Part D in 2006, mergers and acquisitions (M&A) and regulatory changes have led to increased concentration and reduced plan variety in the standalone prescription drug plan (PDP) portion of the market. We examine how this industry consolidation affects Medicare...

Technological innovation in medical services can improve health, but its ability to reach patients often depends on price signals for downstream providers, which can also be discordant across production inputs. We examine such a context when Medicare sharply revises facility fees--while holding...

Firms often exploit loopholes in government contracts to boost revenues. The welfare consequences of this behavior depend on how firms use the marginal windfall dollar, yet little evidence exists to guide policymakers. This paper studies how hospitals allocated over $3 billion obtained from...

The Medicare hospice program is intended to provide palliative care to terminal patients, but patients with long stays in hospice are highly profitable, motivating concerns about overuse among the Alzheimer's and Dementia (ADRD) population in the rapidly growing for-profit sector. We provide the...

Many public programs let individuals choose between publicly provided benefits and a subsidized private alternative. We investigate the determinants of health insurance choice in Medicare--a setting with vast geographic variation in the share of individuals selecting the public option versus...

Following decades of increasing child access to public health insurance, enrollments fell in many states between 2016 and 2019 and the number of uninsured children increased. This study provides the first national, quantitative assessment of the role of several common types of administrative...

In 2010, the Affordable Care Act (ACA) mandated that private insurance plans extend coverage to adult dependents under the age of 26. We hypothesize that this policy may have had the unintended consequence of increasing "job lock" among parents who would otherwise leave their employer. We use a...

Undocumented immigrants are ineligible for public insurance coverage for prenatal care in most states, despite their children representing a large fraction of births and having U.S. citizenship. In this paper, we examine a policy that expanded Medicaid pregnancy coverage to undocumented...