Top 25 Group Carriers
1) Kaiser Permanente
2) UnitedHealthcare
3) Aetna
4) Health Care Service Corporation (HCSC)
5) Anthem
6) Cigna
7) Blue Cross Blue Shield of Massachusetts
8) Blue Shield of California
9) Blue Cross Blue Shield of Michigan
10) Highmark
11) Blue Cross and Blue Shield of Florida
12) Independence Blue Cross
13) Blue Cross and Blue Shield of Kansas
14) Harvard Pilgrim Health Care
15) Centene Corporation
16) Humana
17) CareFirst BlueCross BlueShield
18) Excellus BlueCross BlueShield
19) HAP
20) Horizon Blue Cross Blue Shield of New Jersey
21) Wellmark Blue Cross and Blue Shield of Iowa
22) BlueCross BlueShield of Tennessee
23) Priority Health
24) Premera Blue Cross
25) Tufts Health Plan
