They found 16 large hospitals had C-section rates of 17 percent or less. Northwestern Memorial Hospital was one of these distinguished hospitals. The 16 hospitals delivered at least 3,500 babies or had at least 750 low-risk births in 2015 or the nine months ending September 2015 or June 2016. The national average is 25.8 percent and the national target, set by The U.S. Department of Health and Human Services (HHS), is 23.9 percent. Several hospitals had C-section rates over 40%.