California Code, Health and Safety Code - HSC § 121363

Each health care provider who treats a person for active tuberculosis disease shall examine, or cause to be examined, all household contacts or shall refer them to the local health officer for examination. Each health care provider shall promptly notify the local health officer of the referral. When required by the local health officer, nonhousehold contacts and household contacts not examined by a health care provider shall submit to examination by the local health officer or designee. If any abnormality consistent with tuberculosis disease is found, steps satisfactory to the local health officer shall be taken to refer the person promptly to a health care provider for further investigation, and if necessary, treatment. Contacts shall be reexamined at times and in a manner as the local health officer may require. When requested by the local health officer, a health care provider shall report the results of any examination related to tuberculosis of a contact.