The Affordable Care Act (ACA) significantly expanded health insurance in the United States, but its impact has varied across time and states. We assess the law's heterogeneous impacts over the three presidential administrations since its enactment, as well as across states with different levels...

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...

The New Cooperative Medical Scheme (NCMS) rolled out in China from 2003-2008 provided insurance to 800 million rural Chinese. We combine aggregate mortality data with individual survey data, and identify the impact of the NCMS from program rollout and heterogeneity across areas in their rural...

This paper examines the impact of reducing the administrative fragmentation of billing and payment, one commonly cited cause of inefficiency in US health care. We study a Medicare reform that consolidated billing processes across service types, using its staggered rollout and hospitals' prior...

The COVID-19 related public health emergency led to federal legislation that changed the landscape of Medicaid coverage for low-income people in the United States. Beginning in 2020, policy responses led to a surge in Medicaid enrollment due to federal rules preventing Medicaid disenrollment,...

Universal health coverage is a widely shared goal across lower-income countries. We conducted a large-scale, 4-year trial that randomized premiums and subsidies for India's first national, public hospital insurance program, RSBY. We find roughly 60% uptake even when consumers were charged...

Governments in many low- and middle-income countries are developing health insurance products as a complement to tax-funded, subsidized provision of health care through publicly operated facilities. This paper discusses two rationales for this transition. First, health insurance would boost...

We test whether early Affordable Care Act (ACA) Medicaid expansions in Connecticut (CT), Minnesota (MN), California (CA), and the District of Columbia (DC) affected SSI applications, SSI and DI awards, and the number of SSI and DI beneficiaries. We use a difference-in-difference (DD) approach,...

Prior to the passage of the Affordable Care Act (ACA), part-time workers were much less likely than full-time workers to have health insurance. The ACA included multiple provisions intended to raise health insurance coverage rates, including a mandate that employers provide affordable coverage...

We investigate the effects of substantial Medicare price reductions in the medical device industry, which amounted to a 61% decrease over 10 years for certain device types. Analyzing over 20 years of administrative and proprietary data, we find these price cuts led to a 25% decline in new...