MPI investigates allegations of fraud, waste, and abuse committed by Medicaid providers. Some referrals come through the OIG fraud hotline or complaints from the Inspector General’s online Waste, Abuse and Fraud Electronic Referral System. Referrals are also received from the 23 managed care organizations (MCOs) throughout the state.

MPI makes referrals to the Attorney General's Medicaid Fraud Control Unit (AG-MFCU) when there are indicators of criminal Medicaid fraud. MPI and AG-MFCU work together on joint investigations by sharing resources and information that will lead to successful administrative or criminal prosecution.

OIG's Medicaid Provider Integrity division recovered $2.1 million in the third quarter of fiscal year 2018.