43 Pa. Stat. § 1101.1602
The board or its duly authorized agents shall at all reasonable times have access to, for the purpose of examination and the right to copy, any evidence of any person being investigated or proceeded against that relates to any matter under investigation or in question. Any member of the board shall have the power to issue subpoenas requiring the attendance and testimony of witnesses and the production of any evidence that relates to any matter under investigation or in question before the board, its members or agent conducting the hearing or investigation. Such subpoenas shall be issued as a matter of right upon the request of either party at any time during the pendency of a proceeding. Any member of the board, or any agent designated by the board for such purposes, may administer oaths and affirmations, examine witnesses, and receive evidence.
43 P.S. § 1101.1602