1 BlueCross BlueShield of Tennessee, $3.2 billion in premiums, or 30.8 percent of the state’s market
2 United Healthcare,* $2.5 billion in premiums, or 25.2 percent of the state’s market
3 HealthSpring, $636.3 million in premiums 4 Cariten Health Plan,* $657.7 million in premiums 5 Humana, $420.4 million in premiums, or 4.1 percent of the state’s market
* Reflects total premiums of health plans owned by parent company
Source: Tennessee Department of Commerce & Insurance, 2009 disclosures