Abstract
Expanding access to health insurance is a major policy priority in low- and middle-income
countries, yet rigorous evidence on its effects remains limited. This paper examines the impact of
Nepal’s National Health Insurance Program (NHIP), a voluntary public health insurance program.
I exploit its staggered rollout as a natural experiment and use a difference-in-differences strategy
to estimate causal effects of NHIP eligibility using novel administrative data. My estimates show
that health insurance eligibility significantly increases health service use: total visits rise by 13
percent, outpatient visits by 12 percent, and emergency visits by 18 percent. Insurance eligibility
nearly doubles the use of diagnostic services like laboratory and radiographic services. Dynamic
effects suggest gradual uptake, with significant impacts emerging only after five quarters of
implementation. However, the benefits are not evenly distributed. Utilization gains are larger
among older populations and in richer districts, while poorer districts experience little measurable
effect. Gender effects are modest: both male and female visits increase substantially, with only
a small relative shift toward male patients. Taken together, these findings highlight both the
promise and the limitations of public health insurance in a lower-middle-income country context.
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