(a) With respect to a matter that the commissioner has authority to consider or investigate, the commissioner may issue a subpoena applicable throughout the state that requires:
(1) the attendance and testimony of a witness; and
(2) the production of records.
(b) In connection with a subpoena, the commissioner may require attendance and production of records before the commissioner or the commissioner's designee:
(1) at the department's offices in Austin; or
(2) at another place designated by the commissioner.
(c) In connection with a subpoena, the commissioner or the commissioner's designee may administer an oath, examine a witness, or receive evidence.
(d) The commissioner must personally sign and issue the subpoena.