Fountain Valley-based MemorialCare Health System said today it is collaborating with West Hartford, Conn.-based Aetna Inc. on a new accountable care network.

MemorialCare and Aetna are collaborating on Aetna Whole Health-MemorialCare. The network has some 2,000 doctors, seven hospitals and more than 40 urgent care centers.

Aetna Whole Health-MemorialCare will be available to self-insured employers in Orange County and portions of Los Angeles County Sept. 1, with an effective date of Nov. 1.

The companies said in a release that they anticipate Aetna Whole Health-MemorialCare to be available to fully insured Aetna subscribers in early 2016.

MemorialCare became the exclusive local provider last year for Anthem Blue Cross Vivity, a network made up of seven health systems in Southern California and insurer Anthem Blue Cross.