Anthem Blue Cross PPO Preferred Provider Network www.anthem.com/ca (888) 887-3725 P.O. Box 60007 Los Angeles, CA 90060-0007 Anthem Blue Cross Hospital Pre-admission Certification and Utilization Review and for Appeals www.anthem.com/ca (800) 274-7767 P.O. Box 60007 Los Angeles, CA 90060-0007 Anthem Blue Cross Blue Shield National Network (Outside California) www.bcbs.com (800) 810-2583 P.O. Box 60007 Los … Continue reading Health Plan Providers