Alta Bates Summit Medical Center Berkeley, CA Alta Bates Summit Medical Center Oakland, CA Eden Medical Center Castro Valley, CA John Muir Health-Concord Medical Center Concord, CA John Muir Health-Walnut Creek Medical Center Walnut Creek, CA San Leandro Hospital San Leandro, CA San Ramon Regional Medical Center San Ramon, CA Stanford Health Care-Stanford Hospital Stanford, CA UCSF Medical Center San Francisco, CA