Top 10 Health Insurance Groups By Direct Premiums Written, 2018 (1)

($000)

Rank Group/company Direct premiums written Market share
1 UnitedHealth Group Inc. $100,589,323 14.1%
2 Anthem Inc. 66,121,463 9.2
3 Humana Inc. 55,903,897 7.8
4 HealthCare Service Corp. 37,655,147 5.3
5 Centene Corp. 35,334,497 4.9
6 CVS Health Corp. (2) 21,645,211 3.0
7 WellCare Health Plans Inc. 19,907,554 2.8
8 Kaiser Permanente 19,279,172 2.7
9 GuideWell Mutual Holding Corp. 17,954,524 2.5
10 Molina Healthcare Inc. 16,216,140 2.3
(1) Based on health insurer annual statement data. Excludes health insurance data from the property/casualty and life/annuity annual statements. Excludes territories. (2) CVS Health Corp. and Aetna Inc. completed a merger in 2019. Source: NAIC data, sourced from S&P Global Market Intelligence, Insurance Information Institute.