§ 7901. Definition. The practice of the profession of occupational therapy is defined as the functional evaluation of the client, the planning and utilization of a program of purposeful activities, the development and utilization of a treatment program, and/or consultation with the client, family, caregiver or organization in order to restore, develop or maintain adaptive skills, and/or performance abilities designed to achieve maximal physical, cognitive and mental functioning of the client associated with his or her activities of daily living and daily life tasks. A treatment program designed to restore function, shall be rendered on the prescription or referral of a physician, nurse practitioner or other health care provider acting within his or her scope of practice pursuant to this title. However, nothing contained in this article shall be construed to permit any licensee hereunder to practice medicine or psychology, including psychotherapy or to otherwise expand such licensee's scope of practice beyond what is authorized by this chapter.