Dr. Ji is a health services researcher with extensive experience leveraging insurance payer data to study policy issues pertaining to U.S. healthcare systems, with an emphasis on Medicaid. Her research strives to understand the effect of Medicaid policies on healthcare access and outcomes for vulnerable youth and adults. She recently extended this experience to data on pediatric and adolescent/young adult (AYA) cancer survivorship. She co-leads (with Dr. Sharon Castellino) NCI 1R03CA259665-01 to investigate how the Affordable Care Act affects treatment timeliness and survival in AYAs with cancer. She leads a Medicaid initiative within the Childhood Cancer Survivor Study, where she oversees an ongoing linkage of administrative Medicaid data to a nationwide cohort of cancer survivors. She also leads a Junior Faculty Focused Award evaluating Medicaid coverage continuity for pediatric cancer survivors in a single institution.