Michigan-based system St. John Health has announced it would downsize two Detroit emergency facilities to urgent care centers by July 1. About 50 full and part-time staff at the Detroit Riverview and Conner Creek Village sites are affected by the change, though nearly all will be offered jobs within the system, said Bob Hoban, chief strategy officer for St. John. Riverview, a 270-bed hospital that closed in June 2007, will retain its pharmacy and X-ray services. Conner Creek will continue to house a variety of health and mental health programs.