63 Pa. Stat. § 391.13
For the purpose of determining the suitability of an applicant for licensure and for the purpose of determining compliance with the provisions of this act and applicable regulations of any person licensed or requiring a license under this act, the department by its authorized agent may enter, visit and inspect the building, grounds and equipment and supplies of any facility engaging or appearing to engage in the wholesale distribution of prescription drugs, shall have full and free access to the records of the facility and to the employees therein and their records and shall have full opportunity to interview employees and inspect such premises and records of the facility. Upon entering the facility, the authorized agents shall properly identify themselves to the individual on the premises then in charge of the facility.
63 P.S. § 391.13