Wendy Yi Xu, PhD

This study of claims among adults covered by employer-sponsored plans revealed substantial variations in out-of-network cost-sharing payments. The growth of cost sharing for nonemergent hospitalizations is concerning.

Analyses of Ohio Medicaid claims data from 2013 to 2015 reveal that instability among eligibility categories is common and affects average capitation but not health service use.

This study examined the early impacts of closing the donut hole in Medicare Part D.