<Li> United of Omaha </Li> <Li> Western & Southern Financial Group </Li> <Ul> <Li> AARP </Li> <Li> Aetna </Li> <Li> American Family Insurance </Li> <Li> American National Insurance </Li> <Li> Amerigroup </Li> <Li> Anthem Blue Cross and Blue Shield </Li> <Li> Blue Cross and Blue Shield Association </Li> <Li> CareSource </Li> <Li> Cambia Health Solutions </Li> <Li> Centene Corporation </Li> <Li> Cigna </Li> <Li> Coventry Health Care </Li> <Li> EmblemHealth </Li> <Li> Fortis </Li> <Li> Golden Rule Insurance Company </Li> <Li> Group Health Cooperative </Li> <Li> Group Health Incorporated </Li> <Li> Health Net </Li> <Li> HealthMarkets </Li> <Li> HealthPartners </Li> <Li> HealthSpring </Li> <Li> Highmark </Li> <Li> Horace Mann Educators Corporation </Li> <Li> Humana </Li> <Li> Independence Blue Cross </Li> <Li> Kaiser Permanente </Li> <Li> Kaleida Health </Li> <Li> LifeWise Health Plan of Oregon </Li> <Li> Medica </Li> <Li> Medical Mutual of Ohio </Li> <Li> Molina Healthcare </Li> <Li> Multi-Plan </Li> <Li> Premera Blue Cross </Li> <Li> Principal Financial Group </Li> <Li> Shelter Insurance </Li> <Li> State Farm </Li> <Li> Thrivent Financial for Lutherans </Li> <Li> UnitedHealth Group </Li> <Li> Unitrin </Li> <Li> Universal American Corporation </Li> <Li> WellCare Health Plans </Li> <Li> WellPoint </Li> </Ul> <Li> American Family Insurance </Li>

How many health insurers are there in the us
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