Five nonprofit hospitals in San Francisco's received $79 million in tax breaks intended to compensate them for providing free care to the city's poor and uninsured in 2007, but they spent just $16 million on charity care, according to a report. California Pacific Medical Center was responsible for the vast majority of the disparity, the report showed. California Pacific received close to $70 million in tax breaks, while spending $5.2 million on charity care.