| Company | Enrollment* |
|
WellPoint, Inc. |
33,952,110 |
|
UnitedHealth Group, Inc. |
31,980,000 |
|
Aetna, Inc. |
18,557,996 |
|
Health Care Service Corporation |
12,400,000 |
|
CIGNA HealthCare, Inc. |
11,131,599 |
|
Kaiser Permanente |
8,722,019 |
|
Humana, Inc. |
8,359,031 |
|
Health Net, Inc. |
6,659,000 |
|
Blue Cross Blue Shield of Michigan |
4,548,575 |
|
Highmark, Inc. |
4,114,476 |
|
Coventry Health and Life Insurance Company |
3,603,910 |
|
AmeriHealth Mercy/Independence Blue Cross |
3,599,371 |
|
Blue Cross and Blue Shield of Alabama |
3,570,223 |
|
CareFirst BlueCross BlueShield |
3,330,926 |
|
Medical Mutual of Ohio |
3,154,334 |
Total medical enrollment includes fully insured and known self-insured (ASO) medical membership in commercial and public-sector health plans, as of fall 2009. Health plans consolidated by parent organization where applicable.
Source: AIS's Directory of Health Plans: 2010. Used with permission. http://www.aishealth.com/Products/dhp.html
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