The department's responsibilities in relation to provider fraud and abuse include the following:(1) establishing criteria for identifying cases of possible fraud or abuse;(2) establishing the methods for referring suspected fraud cases for investigation;(3) cooperating with the Medicaid Fraud Control Unit, Office of the Attorney General, by furnishing information and data and serving as witnesses, when requested;(4) recouping all overpayments and taking other administrative sanctions and actions; and(5) investigating cases of possible abuse.