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Aetna Health and Life Insurance Company
Coventry Health and Life Insurance Company
Chickering Claims Administrators, Inc.
Cofinity, Inc.
HealthCare USA of Missouri, Inc.
First Health Group Corp.
First Health Life & Insurance Company
Claims Administration Corp.
Cambridge Life Insurance Company
Aetna Global Benefits (Europe) Limited
Mental Health Associates, Inc.
Aetna Health Insurance Company of Europe Limited
MHNet Life and Health Insurance Company
American Health Holdings, Inc.
Meritain Health, Inc.
Prime Net, Inc.
Strategic Resource Company
American Continental Insurance Company
Continental Life Insurance Company of Brentwood Tennessee
Innovation Health Plan, Inc.
Innovation Health Insurance Company
Cigna
Cigna Care Network
Cigna HealthCare
Great West Healthcare – Cigna Open Access Plus
SAMBA Federal Health Plan
Highmark Blue Cross Blue Shield
Highmark Blue Cross Blue Delaware
Highmark Blue Cross Blue West Virginia
Highmark Blue Shield
Keystone Health Plan West Inc.
AARP Medicare Complete
All Savers Insurance
American Medical Security
Care Improvement Plus
GEHA-United Healthcare Goldenrule
Health Plan of Nevada
Oxford Health Plans
PacifiCare
Secure Horizons
The Empire Plan
UMR United Medical Resources
United Health Integrated Services
United Healthcare
United Healthcare Great Lakes Health Plan
United Healthcare Harvard Pilgrim Health Care (HPHC)
United Healthcare Medicare Solutions
United Healthcare Oxford
United Healthcare Student Resources