Oakland's largest private, not-for-profit medical center is the Alta Bates Summit Medical Center with three campuses and two acute care hospitals in the Oakland region. The Medical Center was formed from the January 2000 merger of Summit Medical Center, Alta Bates Medical Center, and Sutter Health. Its Summit campus specializes in cardiovascular care, orthopedics, women and infants, wellness and prevention, and seniors. The Alta Bates campus, based in Berkeley, is recognized for its care of women and infants, In Vitro Fertilization Program, and its high risk obstetrics program. Alta Bates includes the Herrick Campus, once known as Herrick Hospital and Health Center. The 205-bed Children's Hospital Oakland has the region's only pediatric trauma center, largest pediatric intensive care unit, and one of largest sickle cell treatment and research centers in the world.