A. Any files or records in the possession of the bureau, a regional office or a provider containing identifying information about individuals requesting or receiving treatment or other health services and any unsubstantiated complaints received by the bureau regarding any provider shall be confidential and not subject to public inspection.

B. Such files, records and complaints may be subject to subpoena for use in any pending cause in any administrative proceeding or in any of the courts of this state, unless otherwise provided by law.