(a) In any matter that relates to a facility’s cost of services and consistent with the all–payer model contract, the Commission may:
(1) Hold a public hearing;
(2) Conduct an investigation;
(3) Require the filing of any information; or
(4) Subpoena any witness or evidence.
(b) The Executive Director of the Commission may administer oaths in connection with any hearing or investigation under this section.