Michael Neidorff, Centene’s chief executive, has remained in charge for 25 years, an exceptionally long time for a company leader. For the first time since his appointment in 1996, the payer will shortly begin seeking for Michael Neidorff’s replacement, commencing an executive search. Neidorff’s successor will be chosen by the new board, which will be made up of five new incoming leaders as part of the deal with Politan Capital Management. Neidorff’s successor will face continued uncertainty as the health sector enters another pandemic year, with a new variant bearing down on the United States.