The Centers for Medicare & Medicaid Services will take more time to judge the performance of navigator groups tasked with ACA enrollment outreach, the agency said Thursday.  Performance is tied to funding. Starting in the 2020 open-enrollment period, navigator groups will be evaluated on a two-year performance period rather than one year. Federal funding is tied to how many people are signed up by the groups. The CMS said the change will help stabilize the program and improve consumers’ experience.