Cal. Health & Safety Code § 1225

(a) The department shall adopt, and may from time to time amend or repeal, in accordance with Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code, such reasonable rules and regulations as may be necessary or proper to carry out the purposes and intent of this chapter and to enable the department to exercise the powers and perform the duties conferred upon it by this chapter, not inconsistent with any of the provisions of any statute of this state. The rules and regulations for primary care clinics shall be separate and distinct from the rules and regulations for specialty clinics.
(b) All regulations relating to licensed clinics in effect on December 31, 1977, which were adopted by the department, shall remain in full force and effect until altered, amended, or repealed by the director.
(c) A chronic dialysis clinic, a surgical clinic, or a rehabilitation clinic licensed or seeking licensure shall comply with the following federal certification standards in effect immediately preceding January 1, 2018:
1. (1) A chronic dialysis clinic shall comply with federal certification standards for an end-stage renal disease clinic, as specified in Sections 494.1 to 494.180, inclusive, of Title 42 of the Code of Federal Regulations.
2. (2) A surgical clinic, as defined in subdivision (b) of Section 1204, shall comply with federal certification standards for an ambulatory surgical clinic, as specified in Sections 416.1 to 416.54, inclusive, of Title 42 of the Code of Federal Regulations.
3. (3) A rehabilitation clinic shall comply with federal certification standards for a comprehensive outpatient rehabilitation facility, as specified in Sections 485.50 to 485.74, inclusive, of Title 42 of the Code of Federal Regulations.