Health Plan Enrollment

Health Plan

PPO Enrollment

Group Health Incorporated (GHI)

2,290,533

CIGNA HealthCare, Inc.

1,945,659

Blue Shield of California

1,552,837

AETNA Health Inc.

1,424,498

Blue Cross and Blue Shield of Florida, Inc.

1,222,620

Humana, Inc.

1,211,700

Blue Cross Blue Shield of Michigan

1,196,583

Excellus BlueCross BlueShield

1,015,168

Highmark Blue Cross Blue Shield

951,887

Blue Cross and Blue Shield of North Carolina

899,371

Source: AIS's Directory of Health Plans: 2009, Copyright © 2009 Atlantic Information Services.