OSF HealthCare takes next step with downtown Peoria building project Tim Stumm 7 years ago OSF HealthCare is pleased to announce it has signed a letter of intent with Dewberry for the design and engineering of its new downtown Peoria Ministry headquarters.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.