This brief provides an overview of recent trends in Medicaid and CHIP enrollment as of January 2016, based on data from the Centers for Medicare and Medicaid Services (CMS) produced as part of its Performance Indicator Project. The project was designed to provide timely data on Medicaid and CHIP eligibility and enrollment that are intended to help strengthen data-driven program management and oversight efforts at both the national and state level. They also provide insight into Medicaid and CHIP eligibility and enrollment experiences as the ACA is implemented. This brief examines data as of January 2016 to be able to look at two full years of data post implementation of the major coverage provisions in the Affordable Care Act (ACA).