Cal. Bus. & Prof. Code § 4949

The provisions of this chapter shall not prohibit an acupuncturist from another state or country, who is not a licensed acupuncturist in this state, who is the invited guest of a professional acupuncture association or scientific acupuncture foundation, an approved educational and training program, or a continuing education provider that is approved under Section 4945, solely from engaging in professional education through lectures, clinics, or demonstrations. The guest acupuncturist may engage in the practice of acupuncture in conjunction with these lectures, clinics, or demonstrations for a maximum of six months, but may not open an office or appoint a place to meet patients or receive calls from patients or otherwise engage in the practice of acupuncture.