| AmeriHealth New Jersey today announced that RWJBarnabas Health will join tier 1 in AmeriHealth Advantage, expanding the plan’s reach to six additional counties in Northern New Jersey, effective January 1, 2018. AmeriHealth Advantage will be available for individual members and group customers based in the following counties statewide: Atlantic, Burlington, Camden, Cape May, Essex, Gloucester, Hudson, Mercer, Middlesex, Monmouth, Ocean, Somerset, and Union County. ... |