| Health Plan |
HMO Enrollment |
Kaiser Foundation Health Plan, Inc. |
4,935,832 |
AETNA Health Inc. |
2,591,978 |
Blue Shield of California |
1,057,186 |
Coventry Health and Life Insurance Company |
992,012 |
Blue Cross Blue Shield of Massachusetts |
828,565 |
Blue Cross and Blue Shield of Illinois |
796,932 |
Blue Cross Blue Shield of Michigan |
576,133 |
CareFirst BlueCross BlueShield |
529,902 |
HIP Health Plan of New York, Inc. |
425,766 |
Kaiser Foundation Health Plan of the Northwest, Inc. |
409,648 |
Source: AIS's Directory of Health Plans: 2010, Copyright © 2010 Atlantic Information Services. |