Cal. Bus. & Prof. Code § 4980.06
(a) For the purposes of this chapter, the following definitions apply:
(2) “Private practice” means a type of nonexempt setting that meets all of the following:
(b) An active license or registration number shall be required to engage in the practice of marriage and family therapy, as defined in Section 4980.02, in nonexempt settings at all times with the following exceptions: