CMS released its second annual dataset Thursday on prescription drugs paid for under the U.S. Medicare Part D program. The new data contain information from more than 1 million providers who collectively prescribed about $121 billion in Part D prescription drugs in 2014 – a 17 percent increase compared with 2013 data, CMS said. The dataset includes the total number of prescriptions dispensed for each drug and the total drug cost. However, the costs do not reflect manufacturer rebates paid to Part D plan sponsors. The 10 drugs with the highest number of prescriptions were generics, while the 10 with the highest total cost were brand drugs.