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How Health Plans Stack Up, Dollar- and Membership-Wise

Since American Medical News was kind enough to compile the data (subscription required), I thought I'd offer up this quick pair of tables on the nation's largest nonprofit and for-profit health insurers. These accompanied an article about the proposed merger of the Blues plans Highmark and Independence Blue Cross, and so treats them as a single entity.

Largest nonprofit health plans, by membership (2007)

Health Care Service Corp. (owns four Blues plans) 12.1 million
Kaiser Permanente 8.6 million
Highmark-IBC 7 million
BlueCross BlueShield of Florida 4.2 million
Blue Shield of California 3.2 million
Largest for-profit and nonprofit insurers, by annual revenue (2007)
UnitedHealth Group $75.4 billion
WellPoint $61.1 billion
Kaiser Permanente $37.8 billion
Aetna $27.6 billion
Humana $25.3 billion
Highmark-IBC $22 billion
Cigna $17.6 billion
Health Care Service Corp. $14.4 billion
HealthNet $14.1 billion
Coventry $9.8 billion