United Health Ins Co, Blue Cross/Blue Shield, CalOptima-OneCare, Anthem/Blue Cross, Healthnet, Greater Newport Physicians, CIGNA, Delta Health Sytems, Private Healthcare Systems, Blue Shield of Ca, SCAN, Great-West Life, Aetna/Prudential, Monarch Health Care, One Health Ins Plan, UnitedHealthCare, Principal, Secure Horizons, Tricare & Regal Medical Group