Evidence of Pent-Up Demand for Care After Medicaid Expansion.

We compared new Medicaid enrollees with similar ongoing enrollees for evidence of pent-up demand using claims data following Minnesota's 2014 Medicaid expansion. We hypothesized that if new enrollees had pent-up demand, utilization would decline over time as testing and disease management plans are put in place. Consistent with pent-up demand among new enrollees, the probability of an office visit, a new patient office visit, and an emergency department visit declines over time for new enrollees relative to ongoing Medicaid enrollees.