Rebates for Brand Name Drugs in Part D Substantially Reduced the Growth in Spending from 2011 to 2015

In June 2018, OIG published a data brief Increases in Reimbursement for Brand-Name Drugs in Part D (OEI-03-15-00080). This data brief found that even after accounting for rebates, Part D reimbursement for brand-name drugs increased 62 percent from 2011 to 2015. Subsequently, OIG received a Congressional request to provide more information about brand name drugs with Part D reimbursement and rebates in every year from 2011 to 2015.