I came to know that there is a Progress West Hospital is here. But I'm not sure of the position of the hospital as I don't live here. If anyone sure of this location, please add this to the map.
Reference: http://doctor.webmd.com/results?so=&city=Saint+Peters&state=MO&zip=63376&lat=38.7921&lon=-90.6296&ln=Progress+West&loc=Saint+Peters%2C+MO+63376