Cheboygan-Otsego-Presque Isle Educational Service District MRIC Providers For specific investment provider information, please click on the investment provider name of your choice to visit the company's website. 403(b) Core Investment Provider - GLP & Associates(877) 457-9467 Core Investment Provider - Lincoln Investment through associates of M3 Investment Services(888) 844-7872 Core Investment Provider- Corebridge Financial (formerly AIG Retirement Services-VALIC)(800) 426-3753 Core Investment Provider- MEA Financial Services(800) 292-1950 Core Investment Provider- PlanMember Services(877) 769-4032 Single Source Investment Provider- Midwest Capital Advisors(877) 269-4032