California Code, Welfare and Institutions Code - WIC § 9718.5

(a)(1) Except as provided in paragraph (2), a skilled nursing facility or residential care facility shall not, under any circumstances, deny entry to a representative of the office acting in their official capacity.

(2) Notwithstanding paragraph (1), nothing in this section is intended to affect the ability of the State Public Health Officer or a local health officer to limit contact with patients or staff at a skilled nursing facility or residents or staff at a residential care facility in order to prevent or limit the spread of a contagious, infectious, or communicable disease.