There was a clear regression to the mean in counts and cost in the high utilizer, non-CHW member population. However, the overall magnitude of the reduction in resource utilization appeared to be significantly higher in the CHW than in the non-CHW intervention group. Unlike the non-CHW group, the CHW group did not exhibit a significant decline in primary care and specialist resources. This can be seen as a positive outcome reflecting the impact of CHWs’ assisting members in establishing with a medical home, and using appropriately primary care and specialty services for a range of needs from preventive services to chronic disease management. This emphasis on use of appropriate services may explain the significantly larger reduction in inpatient and prescription costs among CHW members than non-CHW members.