1. Medicaid program integrity: CMS should build on current oversight efforts by further enhancing collaboration with states : report to the Chairman, Committee on Finance, U.S. Senate Publication: Washington, D.C. : U.S. Government Accountability Office, March 2017 Subject(s): Financial AuditFraud -- prevention & controlInsurance, Health, ReimbursementMedicaid -- economicsProgram EvaluationContract ServicesManaged Care ProgramsState GovernmentHumansUnited StatesUnited States. Department of Health and Human Services.Centers for Medicare & Medicaid Services (U.S.)