Edward Hospital - Main Campus. 801 S. Washington Street, Naperville, Illinois 60540. 630-527-3000. Elmhurst Hospital - Main Campus. 155 E. Brush Hill Road, Elmhurst, Illinois 60126. 331-221-1000. Linden Oaks Behavioral Health - Main Inpatient Campus. 852 South West Street, Naperville, Illinois 60540. 630-305-5027.