Robert K. Ditmore
"Mr. Robert K. Ditmore has been a Director of Centene Corporation (the "Company") since 1996. Mr. Ditmore is a retired President and Chief Operating Officer of United Healthcare Corporation (managed care industry), now known as UnitedHealth Group Inc. ("UnitedHealth"). Mr. Ditmore also served as a Director of UnitedHealth." 
Resources and articles
- bloomberg Robert K. Ditmore, organizational web page, accessed March 24, 2018.