Centene Chairman and CEO Michael Neidorff will be taking a medical leave of absence, effective Feb. 24.
James Dallas, Centene board member and former senior vice president, will serve as acting board chair in Mr. Neidorff's absence.
The company will be helmed by an "expanded Office of the Chairman," which includes Vice Chair Sarah London, President and COO Brent Layton, CFO Drew Asher and Shannon Bagley, chief administrative officer.
"I have full faith and confidence in this leadership team and their ability to execute on Centene's value creation strategy," Mr. Neidorff said. "As I deal with a treatable medical condition, I want to thank the team for their ongoing work and dedication to lead this exceptional company."
The duration of Mr. Neidorff's leave of absence was not specified.