Henry Mayo Newhall Hospital is a 357-bed not-for-profit community hospital and trauma center in Valencia, Santa Clarita, California. It was founded in 1975. Named after businessman Henry Mayo Newhall, the hospital recently opened a new patient tower that includes 90 private patient rooms and a new Center for Women and Newborns, also with all private rooms. Henry Mayo is an Advanced Primary Stroke Center and a STEMI Receiving Center.