Our Part D Event (PDE) files have data on prescription drug fills for individuals enrolled in Medicare Part D, either through a Prescription Drug Plan (PDP) or a Medicare Advantage Prescription Drug Plan (MA-PD).
For both types of Plans, the PDE file has information on:
NOTE: Part D-enrolled individuals may also use drugs that are not included in the PDE File.
The table below lists variable categories for and some key variables in PDE data. For a comprehensive list of variables, review the PDE data dictionary.
Beneficiary Payment Amount, Gross Drug Cost, Third Party Payment
Beneficiary Identification Number, Coverage Code, Date of Birth, Gender, Patient Residence
Fill Number, National Drug Code (NDC) 11 Format, Prescription Code, RX Service Date
Prescriber ID, Service Provider ID
2006 - 2021
File Update Frequency
Data Dictionary LinkVisit the Data Documentation Page
NIA Data Partners Offering PDE
CE, HRS, LLFS, NSHAP, PT, PSAD, RADC, WLS
NIA Data Partners Not Offering PDE
BLSA, HABC, NHAS, NHATS, NLTCS, PSID, UAS, UFOVT
Additional ResourcesPart D Medication Therapy Management (MTM) Files