Prescriptions must include the department authorized provider number for the prescribing physician and the physician's signature. The physician's record must contain the name and reason for the medication, the dosage, quantity prescribed and/or dispensed, the route of administration, the frequency, the starting and stopping dates, the expected outcome of treatment, and any adverse effects that occur. Please refer to WAC 296-20-03021 and 296-20-03022 for additional documentation requirements when treating chronic, noncancer pain.