Section 73463 - Physical Therapy Service Unit-Staff(a) The physical therapy service unit shall be under the direction of a physical therapist.(b) A physical therapist assistant shall treat patients only under the supervision of a physical therapist in accordance with the Physical Therapy Practice Act, Article 4.5 (beginning with Section 2655) of the Business and Professions Code.(c) A physical therapy aide shall work only under the direct supervision of a physical therapist.(d) The physical therapist, physical therapist assistant and physical therapy aide shall work the hours necessary to accomplish those tasks listed in Section 73459.Cal. Code Regs. Tit. 22, § 73463