The secretary may authorize personnel to audit or investigate and report to the department on any matter involving violations or complaints alleging violations of statutes, regulations, or rules applicable to the medical assistance program and to perform such investigations or audits as are required to verify the actual provision of services or items available under the medical assistance program and the appropriateness and accuracy of claims for reimbursement submitted by providers participating in the program. Department employees authorized by the secretary under this paragraph shall be issued, and shall possess at all times while they are performing their investigatory or audit functions under this section, identification, signed by the secretary, that specifically designates the bearer as possessing the authorization to conduct medical assistance investigations or audits. Under the request of a designated person and upon presentation of the person’s authorization, providers and medical assistance recipients shall accord the person access to any provider personnel, records, books, or documents or other information needed. Under the written request of a designated person and upon presentation of the person’s authorization, providers and recipients shall accord the person access to any needed patient health care records of a recipient. Authorized employees may hold hearings, administer oaths, take testimony, and perform all other duties necessary to bring the matter before the department for final adjudication and determination.

The department shall promulgate rules to implement this paragraph.