Yale-New Haven Hospital is a nationally recognized, 1,541-bed, not-for-profit hospital serving as the primary teaching hospital for the Yale School of Medicine. Yale-New Haven was founded as the fourth voluntary hospital in the U.S. in 1826. Today, the hospital's two New Haven-based inpatient campuses include Yale-New Haven Children's Hospital, Yale-New Haven Psychiatric Hospital and Smilow Cancer Hospital. YNHH has a combined medical staff of about 4,500 university and community physicians practicing in more than 100 specialties. YNHH's York Street campus and associated ambulatory sites are Magnet-designated by the American Nurses Credentialing Center.