(a) It is the responsibility of each PT and/or PTA to determine the number of PTAs and/or aides he or she can supervise safely.(b) Supervision of PTAs.(1) A supervising PT is responsible for and will participate in the patient's care.(2) A supervising PT must be on call and readily available when physical therapy services are being provided.(3) A PT may assign responsibilities to a PTA to provide physical therapy services, based on the PTA's training, that are within the scope of activities listed in §322.1, Provision of Services.(4) The supervising PT must hold documented conferences with the PTA regarding the patient. The PT is responsible for determining the frequency of the conferences consistent with accepted standards of practice.(c) Supervision of physical therapy aides.(1) A supervising PT or PTA is responsible for the supervision of, and the physical therapy services provided by, the PT aide.(2) A PT or PTA must provide onsite supervision of a physical therapy aide, and remain within reasonable proximity during the aide's interaction with the patient.