Centene Corp. stands as the leading individual health insurance provider in the United States, commanding an impressive market share of 13.26%. In contrast, the second-ranking company, GuideWell (Florida Blue), holds a notably lower share at 8.19%. When considering both group and individual commercial health insurance policies, Centene secures the fifth position among health insurance companies, capturing 6.17% of the market. Centene proudly states that nearly one in 15 individuals in the United States relies on its products, solidifying its position as the foremost provider of plans within the health insurance marketplace.