With 5.5 million members across 29 states, Ambetter Health continues its legacy of delivering affordable, accessible coverage through Centene Corporation's national network. ST. LOUIS, Oct. 31, 2025 /PRNewswire/ -- As the Marketplace open enrollment begins, Ambetter Health, the health insurance product offered by Centene Corporation (NYSE: CNC) subsidiaries, a leading healthcare enterprise committed to helping people live healthier lives, proudly marks its 13th year on the Health Insurance Marketplace. O ...