Cal. Health and Safety Code § 1261

(a) A health facility shall allow a patient’s domestic partner, the children of the patient’s domestic partner, and the domestic partner of the patient’s parent or child to visit, unless one of the following is met: (1) No visitors are allowed. (2) The facility reasonably determines that the presence of a particular visitor would endanger the health or safety of a patient, member of the health facility staff, or other visitor to the health facility, or would significantly disrupt the operations of a facility. (3) The patient has indicated to health facility staff that the patient does not want this person to visit. (b) This section may not be construed to prohibit a health facility from otherwise establishing reasonable restrictions upon visitation, including restrictions upon the hours of visitation and number of visitors. (c) For purposes of this section, “domestic partner” has the same meaning as that term is used in Section 297 of the Family Code.