CMS Program Statistics: Medicare Enrollment

Datathon 2026

Updated Oct 8, 2026

Updated one-time

About this dataset

CMS Program Statistics Medicare Enrollment reports: counts of Medicare Part A/B and Part D enrollees, newly enrolled beneficiaries, deaths, and Medicare-Medicaid dual enrollees, nationally and by state, using a person-year enrollment methodology.

Data and resources (9)

XLSX
Medicare Total Enrollment
Modified Aug 5, 2026Table and Data API available
Download: Medicare Total Enrollment Explore data: Medicare Total Enrollment
XLSX
Original Medicare Enrollment
Modified Aug 5, 2026Table and Data API available
Download: Original Medicare Enrollment Explore data: Original Medicare Enrollment
XLSX
Medicare Advantage & Other Health Plan Enrollment
Modified Aug 5, 2026Table and Data API available
Download: Medicare Advantage & Other Health Plan Enrollment Explore data: Medicare Advantage & Other Health Plan Enrollment
XLSX
Medicare Part D Enrollment
Modified Aug 5, 2026Table and Data API available
Download: Medicare Part D Enrollment Explore data: Medicare Part D Enrollment
XLSX
Medicare Newly Enrolled
Modified Aug 5, 2026Table and Data API available
Download: Medicare Newly Enrolled Explore data: Medicare Newly Enrolled
XLSX
Medicare Deaths
Modified Aug 5, 2026Table and Data API available
Download: Medicare Deaths Explore data: Medicare Deaths
XLSX
Medicare-Medicaid Dual Enrollment
Modified Aug 5, 2026Table and Data API available
Download: Medicare-Medicaid Dual Enrollment Explore data: Medicare-Medicaid Dual Enrollment
DOCX
Methodology
55 KBModified Aug 17, 2026
Download: Methodology
DOCX
Glossary of Terms
53 KBModified Aug 17, 2026
Download: Glossary of Terms

CMS Program Statistics: Medicare Enrollment

About this dataset

Data and resources (9)

Medicare Total Enrollment

Original Medicare Enrollment

Medicare Advantage & Other Health Plan Enrollment

Medicare Part D Enrollment

Medicare Newly Enrolled

Medicare Deaths

Medicare-Medicaid Dual Enrollment

Methodology

Glossary of Terms