OSF HealthCare Little Company of Mary Medical Center offers state-of-the-art treatment for colon cancer from screening through survival March 17, 2021. OSF Little Company of Mary Goes Pink to Thank Mission Partners for Service March 12, 2021. OSF HealthCare Little Company of Mary Medical Center Completes Recent Emergency Department Renovation ...Employee Resources‧Alerts 2‧Find a Location‧Contact Us‧Covid-19‧Search.