CMS has released the Part D Prescriber Public Use File (PUF) with data for 2015. The Part D Prescriber PUF includes summarized information on prescription drugs that were prescribed by individual physicians and other health care providers and paid for under the Medicare Part D Prescription Drug Program in 2015. The data includes the specific medications prescribed and statistics on utilization and costs organized by the prescriber National Provider Identifier (NPI), drug name (brand name in the case of trademarked drugs) and generic name. It provides data on more than one million distinct health care providers who collectively prescribed $137 billion in prescription drugs under the Part D program in 2015.
The 2015 data and supplemental information are available at https://www.cms.gov/Research-Statistics-Data-and-Systems/Statistics-Trends-and-Reports/Medicare-Provider-Charge-Data/PartD2015.html.