Michael Neidorff joined Centene as its president and CEO in 1996, leading its transformation from a closely held, $40 million corporation to a publicly traded healthcare enterprise with annual revenues exceeding $60 billion. Serving as Centene's chairman and CEO since 2004, Neidorff has led the development and implementation of Medicaid, Medicare and commercial managed care services while remaining committed to Centene's local delivery of high-quality healthcare. Neidorff is the longest-tenured CEO among the major managed care companies.

Under Neidorff's direction, Centene has expanded from operating Medicaid health plans in two states to providing high-quality healthcare solutions to more than 14 million managed-care members and beneficiaries in 32 states, and 600,000 individuals internationally. Centene ranked No. 61 on the 2018 Fortune 500 List and No. 43 on Forbes' 2018 Global 2000: Growth Champions list. Centene was also recognized as one of the Fortune 2019 World's Most Admired Companies.

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