This article does not apply to a person engaged in the practice of fitting hearing aids if his practice is for a governmental agency, or private clinic, or is part of the academic curriculum of an accredited institution of higher education, or part of a program conducted by a public, charitable institution or other nonprofit organization, and who does not engage directly or indirectly in the sale or offering for sale of hearing aids.
Source:
Section 2538.21, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC§ionNum=2538.21..