Ariz. Rev. Stat. § 32-2031
E. The board may reinstate a retired licensee to active practice or work on payment of the renewal fee and presentation of evidence satisfactory to the board that the retired licensee is professionally able to engage in the practice of physical therapy or work as a physical therapist assistant and still possesses the professional knowledge required. If the retired licensee has held a retired license for more than three consecutive years, the person must also demonstrate competency to the board's satisfaction by satisfying one or more of the following as prescribed by the board: