The Medicare Part D Enrollment tables provide data on characteristics of the Medicare Part D covered population. These data, previously published as CMS Program Statistics (CPS), do not exist in a machine-readable format yet, so the view data and API options are not available. Please use the download function to access the data. Below is the list of tables: MDCR ENROLL D 1. Medicare Part D Enrollment: Part D Enrollees by Type of Plan, Low Income Subsidy (LIS), and Retiree Drug Subsidy, Yearly Trend MDCR ENROLL D 2. Medicare Part D Enrollment: Part D Enrollees by Type of Plan, Low Income Subsidy (LIS), and Retiree Drug Subsidy, by Demographic Characteristics MDCR ENROLL D 3. Medicare Part D Enrollment: Part D Enrollees by Type of Plan, Low Income Subsidy (LIS), and Retiree Drug Subsidy, by Area of Residence