The department or its authorized agents shall conduct periodic audits or reviews, including onsite audits or reviews, of performance under any contract made pursuant to this article. These audits or reviews may evaluate the following:
(a) Level and quality of care, and the necessity and appropriateness of the services provided.
(b) Internal procedures for assuring efficiency, economy and quality of care.
(c) Grievances relating to medical care and their disposition.
(d) Financial records only when determined necessary by the department to protect public funds.