Rise in Medi-Cal Enrollment Corresponded to Increases in California County Health Spending During ACA Implementation.

As Medi-Cal enrollment expanded during the early years of ACA expansion (2014 and 2015), county health department spending in California also swelled. For most counties and regions in the state, the two measures tracked closely. However, exceptions in Northern California (with high enrollment and low spending growth) and Central California (low enrollment but high spending growth) show that other factors may also have had an effect.