St. Joseph Health System’s Petaluma Valley Hospital, an 80-bed community based district hospital,was named one of the United States’ top performers on key clinical quality measures by The Joint Commission, the nation’s leading accreditor of health care organizations, in conjunction with the commission’s release of its annual report on Improving America’s Hospitals. The Joint Commission recognized Petaluma Valley Hospital, the only hospital in the North Bay to earn inclusion among 405 top-performing hospitals nationwide, based on its evidence-based clinical processes that are shown to improve care for patient conditions including heart attack, pneumonia and surgical care.