"Under Neidorff, Centene grew into a national healthcare giant with revenues that eclipsed $126 billion in 2021 as more Americans signed up for Medicaid, the health insurance for low income patients it manages via contracts with states and individual coverage under the Affordable Care Act known as Obamacare hit record levels during the pandemic. And Centene under Neidorff expanded into the business of Medicare Advantage, the privatized health benefits myriad health insurers offer seniors via contracts with the federal government."