AEGON Insurance Group
American Medical Security
Anthem Blue Cross and Blue Shield (Connecticut, Indiana, Kentucky, Ohio)
Arkansas Blue Cross and Blue Shield
Blue Cross and Blue Shield of Colorado
Blue Cross and Blue Shield of Delaware
Blue Cross and Blue Shield of Florida
Blue Cross and Blue Shield of Georgia
Blue Cross and Blue Shield of Kansas
Blue Cross and Blue Shield of Kansas City
Blue Cross and Blue Shield of Louisiana
Blue Cross and Blue Shield of Maine
Blue Cross and Blue Shield of Michigan
Blue Cross and Blue Shield of Minnesota
Blue Cross and Blue Shield of Missouri
Blue Cross and Blue Shield of Montana
Blue Cross and Blue Shield of Nebraska
Blue Cross Blue Shield of Hawaii
Anthem Blue Cross of California
Blue Cross of Idaho Health Service
Blue Shield of California
Blue Cross and Blue Shield of Alabama
Blue Cross and Blue Shield of Arizona
Blue Cross and Blue Shield of Illinois
Blue Cross and Blue Shield of Massachusetts
Canadian Association of Blue Cross Plans
CareFirst Blue Cross Blue Shield (Maryland and Washington, DC)
Coventry Health Care
Delta Dental
Dental Network of America
Humana
Intermountain Health Care (IHC)
Kaiser
Keystone Health Plan Central
Mid Atlantic Medical Services, Inc. (MAMSI)
MVP Health Plan
Neighborhood Health Plan
Oxford Health Plans
PacifiCare Health Systems
PacificSource Health Plans
Partners National Health Plans
Physicians Health Services
Physicians Mutual Insurance
Provident Companies
Regence Blue Shield of Idaho
Sentara Healthcare
TriWest Healthcare Alliance
Tufts Health Plan
United Health Care
Wellmark Blue Cross and Blue Shield (Iowa, South Dakota)
Wellpoint Health Networks
Wisconsin Physicians Service