The has OIG issued a report entitled "Comparing Pharmacy Reimbursement: Medicare Part D to Medicaid." The OIG found that Part D and nationwide Medicaid pharmacy reimbursement amounts for most of the single-source drugs that the OIG reviewed were similar; however, Medicaid reimbursement amounts for the multiple-source drugs reviewed were typically higher than the Part D amounts. The OIG notes that it compared only the amount reimbursed to pharmacies by Part D and Medicaid; the OIG did not compare total program expenditures or examine the impact of rebates or post-point-of-sale price concessions. Moreover, in a review of five states, the OIG found that Medicaid and Part D ingredient cost reimbursement amounts were similar for single-source drugs, but the average Medicaid ingredient costs exceeded the average Part D ingredient costs for most multiple-source drugs under review. In addition, Medicaid dispensing fees were substantially higher than average Part D dispensing fees for both the single-source and multiple-source drugs under review.