Children's Hospital Los Angeles is a nationally ranked, freestanding acute care children's hospital in the East Hollywood district of Los Angeles, on Sunset Boulevard at the corner of Vermont Avenue. The hospital has been academically affiliated with the Keck School of Medicine of the University of Southern California since 1932 and the hospital features 401 pediatric beds. The hospital provides comprehensive pediatric specialties and subspecialties to infants, children, teens, and young adults generally aged 0–21 throughout California and the west coast. The hospital also sometimes treats adults that require pediatric care. The hospital has a rooftop helipad and is an ACS verified level I pediatric trauma center, one of a few in the region. The hospital features a regional pediatric intensive-care unit and an American Academy of Pediatrics verified level IV neonatal intensive care unit. U.S. News & World Report ranks CHLA as the fifth best children's hospital in the United States and the best in California. It has also received Magnet Recognition from the American Nurses Credentialing Center.