Adventist Health Services
Anaheim Memorial Medical Center
Aspen Education Group
Barlow Respiratory Hospital
BETA Healthcare Group
Betty Ford Center at Eisenhower
Beverly Hills Linden Crest Surgical Center
Carl Warren & Company
Central California Endoscopy Center
Century City Doctors Hospital
Chest & Critical Care Consultants
Chubb
Cincinnati Insurance Companies
Cirrus Health
Citrus Valley Health Partners, Inc.
City of Newport Beach
County of Orange
CNA Insurance
College Health Enterprises
Concentra Managed Care Services
Concentra Medical Centers
The Doctors Company
Foothill Presbyterian Hospital
Fresno Surgical Hospital
G.E. Medical Protective Insurance
Company/Swiss Reinsurance Company
Health Providers Insurance Reciprocal, RRG
Memorial Health Services
Mercury Casualty Company
Mission Hospital
Norcal Mutual Insurance Company
Northeast Community Clinic
Optima Healthcare Insurance Services
Pacific Hospital of Long Beach
Pinnacle Health Resources
Primary and Multi-Specialty Clinics of America, Inc.
Prospect Medical Holdings, Inc.
Providence Health + Services
Queen of the Valley Hospital
Regents of the University of California
San Antonio Community Hospital
Sedgwick CMS
Sentry Insurance Company
St. Joseph Health System
St. Joseph Hospital of Orange
St. Jude Medical Center
St. Mary Medical Center
Thousand Oaks Surgical Hospital
Torrance Memorial Medical Center
Travelers Insurance Company
UC Irvine Medical Center
USC University Hospital
Viant
Westco Claims Management Services
Zurich American Insurance Group