California Code, Government Code - GOV § 855

(a) A public entity that operates or maintains any medical facility that is subject to regulation by the State Department of Health Services, Social Services, Developmental Services, or Mental Health is liable for injury proximately caused by the failure of the public entity to provide adequate or sufficient equipment, personnel or facilities required by any statute or any regulation of the State Department of Health Services, Social Services, Developmental Services, or Mental Health prescribing minimum standards for equipment, personnel or facilities, unless the public entity establishes that it exercised reasonable diligence to comply with the applicable statute or regulation.

(b) A public entity that operates or maintains any medical facility that is not subject to regulation by the State Department of Health Services, Social Services, Developmental Services, or Mental Health is liable for injury proximately caused by the failure of the public entity to provide adequate or sufficient equipment, personnel or facilities substantially equivalent to those required by any statute or any regulation of the State Department of Health Services, Social Services, Developmental Services, or Mental Health prescribing minimum standards for equipment, personnel or facilities applicable to a public medical facility of the same character and class, unless the public entity establishes that it exercised reasonable diligence to conform with such minimum standards.

(c) Nothing in this section confers authority upon, or augments the authority of, the State Department of Health Services, Social Services, Developmental Services, or Mental Health to adopt, administer or enforce any regulation. Any regulation establishing minimum standards for equipment, personnel or facilities in any medical facility operated or maintained by a public entity, to be effective, must be within the scope of authority conferred by law.