North Cook Intermediate Service Center Authorized Investment Providers For specific investment provider information, please click on the investment provider name of your choice to visit the company's website. 403(b) Corebridge Financial (formerly AIG Retirement Services-VALIC)(800) 448-2542 Equitable(800) 628-6673 Fidelity Investments(800) 343-0860 Lincoln Investment Planning, LLC(800) 242-1421 457(b) Corebridge Financial (formerly AIG Retirement Services-VALIC)(800) 448-2542 Equitable(800) 628-6673 Lincoln Investment Planning, LLC(800) 242-1421