The hospital, located in the growing western suburbs of Chicago, boasts the second busiest surgical center in the state. Opening in 1964 with 113 beds, it now has 361 beds. It operates a physicians group with more than 50 physicians at 17 locations at last count. In Dec. 2010, the hospital signed a definitive agreement to merge with 159-bed Delnor Health System in nearby Geneva, Ill., pending regulatory review. Previously, Central DuPage signed an affiliation agreement with Cleveland Clinic’s cardiac surgery program to improve heart care and refer complex cases to Cleveland Clinic.