This statistic shows the enrollment figures in the Medicare program from 1966 to 2023, by type of beneficiary. In 2011, there were over ** million who benefited from Medicare due to their age, while a further *** million benefited on grounds of disability. By 2024, while the number of Medicare beneficiaries due to age have grown to **** million, the number of enrollees due to disability have gradually decreased and was also *** million in 2024.

The CMS Program Statistics - Medicare Newly Enrolled tables provide data on characteristics of the newly enrolled Medicare population.

For additional information on enrollment, providers, and Medicare use and payment, visit the CMS Program Statistics page.

Below is the list of tables:

MDCR ENROLL AB 21. Medicare Newly Enrolled Beneficiaries: Total, Aged, and Disabled Enrollees, Yearly Trend
MDCR ENROLL AB 22. Medicare Newly Enrolled Beneficiaries: Total Enrollees by Month of Enrollment, Yearly Trend
MDCR ENROLL AB 23. Medicare Newly Enrolled Beneficiaries: Total Enrollees, by Demographic Characteristics
MDCR ENROLL AB 24. Medicare Newly Enrolled Beneficiaries: Total, Aged, and Disabled Enrollees, by Area of Residence
MDCR ENROLL AB 25. Medicare Newly Enrolled Beneficiaries: Total, Aged, and Disabled Original Medicare Enrollees
MDCR ENROLL AB 26. Medicare Newly Enrolled Beneficiaries: Original Medicare Enrollees by Month of Enrollment, Yearly Trend
MDCR ENROLL AB 27. Medicare Newly Enrolled Beneficiaries: Original Medicare Enrollees, by Demographic Characteristics
MDCR ENROLL AB 28. Medicare Newly Enrolled Beneficiaries: Total, Aged, and Disabled Original Medicare Enrollees, by Area of Residence
MDCR ENROLL AB 29. Medicare Newly Enrolled Beneficiaries: Total, Aged, and Disabled Medicare Advantage and Other Health Plan Enrollees, Yearly Trend
MDCR ENROLL AB 30. Medicare Newly Enrolled Beneficiaries: Medicare Advantage and Other Health Plan Enrollees, by Month of Enrollment, Yearly Trend
MDCR ENROLL AB 31. Medicare Newly Enrolled Beneficiaries: Medicare Advantage and Other Health Plan Enrollees, by Demographic Characteristics
MDCR ENROLL AB 32. Medicare Newly Enrolled Beneficiaries: Total, Aged, and Disabled Medicare Advantage and Other Health Plan Enrollees, by Area of Residence

In 2021, about ***** percent of all Medicare enrolled beneficiaries in the United States were aged 85 years or older. Medicare provides low-cost health coverage to people over the age of ** and those with disabilities and certain medical conditions. This statistic depicts the distribution of Medicare enrollees in 2021, by age group.

The CMS Program Statistics - Medicare Advantage & Other Health Plan Enrollment tables provide data on characteristics of the population covered by Medicare Advantage & other health plans. For additional information on enrollment, providers, and Medicare use and payment, visit the CMS Program Statistics page. Below is the list of tables:MDCR ENROLL AB 15. Medicare Advantage and Other Health Plan Enrollment: Part A and/or Part B Total, Aged, and Disabled Enrollees, Yearly TrendMDCR ENROLL AB 16. Medicare Advantage and Other Health Plan Enrollment: Part A and/or Part B Enrollees, by Age Group, Yearly TrendMDCR ENROLL AB 17. Medicare Advantage and Other Health Plan Enrollment: Part A and/or Part B Enrollees, by Demographic CharacteristicsMDCR ENROLL AB 18. Medicare Advantage and Other Health Plan Enrollment: Part A and/or Part B Enrollees, by Type of Entitlement and Demographic CharacteristicsMDCR ENROLL AB 19. Medicare Advantage and Other Health Plan Enrollment: Part A and/or Part B Total, Aged, and Disabled Enrollees, by Area of ResidenceMDCR ENROLL AB 20. Medicare Advantage and Other Health Plan Enrollment: Part A and/or Part B Enrollees, by Type of Entitlement and Area of ResidenceResources for using and understanding the dataThe data reported in these enrollment tables are based on information gathered from CMS administrative enrollment data for beneficiaries enrolled in Medicare Advantage and Other Health Plans available from the CMS Chronic Conditions Data Warehouse.

A dataset that provides current information on the number of Medicare beneficiaries with hospital/medical coverage and prescription drug coverage, available for several geographical areas.

The CMS Program Statistics - Original Medicare Enrollment tables provide data on characteristics of the Original Medicare population.

For additional information on enrollment, providers, and Medicare use and payment, visit the CMS Program Statistics page.

Below is the list of tables:

MDCR ENROLL AB 9. Original Medicare Enrollment: Part A and/or Part B Total, Aged, and Disabled Enrollees, Yearly Trend
MDCR ENROLL AB 10. Original Medicare Enrollment: Part A and/or Part B Enrollees, by Age Group, Yearly Trend
MDCR ENROLL AB 11. Original Medicare Enrollment: Part A and/or Part B Enrollees, by Demographic Characteristics
MDCR ENROLL AB 12. Original Medicare Enrollment: Part A and/or Part B Enrollees, by Type of Entitlement and Demographic Characteristics
MDCR ENROLL AB 13. Original Medicare Enrollment: Part A and/or Part B Total, Aged, and Disabled Enrollees, by Area of Residence
MDCR ENROLL AB 14. Original Medicare Enrollment: Part A and/or Part B Enrollees, by Type of Entitlement and Area of Residence

This data set accompanies the Profile of the California Medicare Population chartbook, published by the Office of Medicare Innovation and Integration in February 2022, and available at (https://www.dhcs.ca.gov/services/Documents/OMII-Medicare-Databook-February-18-2022.pdf). The three data files in this data set were analyzed from federal administrative data (the Medicare Master Beneficiary Summary File) for beneficiary characteristics as of March 2021. These datasets include: Medicare enrollment, Medicare Advantage enrollment (and its converse fee-for-service Medicare enrollment), dual Medi-Cal eligibility and enrollment (and its converse Medicare-only enrollment), by county. Medicare Savings Program enrollees were considered Medicare-only and not dually enrolled in Medi-Cal. All Medicare Part C beneficiaries, including PACE, Cal MediConnect and Special Needs Plans, were considered to have Medicare Advantage.

DHCS partnered with The SCAN Foundation and ATI Advisory in 2021 and 2022 to develop a series of chartbooks that provide information about Medicare beneficiaries in California. This work is supported by a grant from The SCAN Foundation to advance a coordinated and easily navigated system of high-quality services for older adults that preserve dignity and independence. For more information, visit www.TheSCANFoundation.org.

In 2004, *** million Medicare beneficiaries were enrolled in Medicare Advantage (MA) plans, by 2024, this has reached ** million. MA penetration within total Medicare has also increased. Medicare Advantage is the private plan alternative to traditional Medicare and often provides prescription benefits to the beneficiary. This statistic depicts the Medicare Advantage (MA) enrollment in the United States from 2004 to 2024.

The CMS Program Statistics - Medicare-Medicaid Enrollment tables provide data on characteristics of the Medicare-Medicaid enrollee population. For additional information on enrollment, providers, and Medicare use and payment, visit the CMS Program Statistics page. Below is the list of tables: MDCR ENROLL AB 40. Medicare-Medicaid Enrollment (MME): Total Medicare-Medicaid Enrollees by Type of Eligibility, Yearly Trend MDCR ENROLL AB 41. Medicare-Medicaid Enrollment (MME): Total Medicare-Medicaid Enrollees by Type of Eligibility and by Demographic Characteristics MDCR ENROLL AB 42. Medicare-Medicaid Enrollment (MME): Total Medicare-Medicaid Enrollees by Type of Eligibility and Area of Residence MDCR ENROLL AB 43. Medicare-Medicaid Enrollment (MME): Original Medicare Enrollees by Type of Eligibility, Yearly Trend MDCR ENROLL AB 44. Medicare-Medicaid Enrollment (MME): Original Medicare Enrollees by Type of Eligibility and by Demographic Characteristics MDCR ENROLL AB 45. Medicare-Medicaid Enrollment (MME): Original Medicare Enrollees by Type of Eligibility and Area of Residence MDCR ENROLL AB 46. Medicare-Medicaid Enrollment (MME): Medicare Advantage and Other Health Plan Enrollees by Type of Eligibility, Yearly Trend MDCR ENROLL AB 47. Medicare-Medicaid Enrollment (MME): Medicare Advantage and Other Health Plan Enrollees by Type of Eligibility and by Demographic Characteristics MDCR ENROLL AB 48. Medicare-Medicaid Enrollment (MME): Medicare Advantage and Other Health Plan Enrollees by Type of Eligibility and Area of Residence

The CMS Program Statistics - Medicare Total Enrollment tables provide data on characteristics of the Medicare-covered populations.

For additional information on enrollment, providers, and Medicare use and payment, visit the CMS Program Statistics page.

Below is the list of tables:

MDCR ENROLL AB 1. Total Medicare Enrollment: Total, Original Medicare, and Medicare Advantage and Other Health Plan Enrollment, Yearly Trend
MDCR ENROLL AB 2. Total Medicare Enrollment: Total, Original Medicare, Medicare Advantage and Other Health Plan Enrollment, and Resident Population, by Area of Residence
MDCR ENROLL AB 3. Total Medicare Enrollment: Part A and/or Part B Total, Aged, and Disabled Enrollees, Yearly Trend
MDCR ENROLL AB 4. Total Medicare Enrollment: Part A and/or Part B Enrollees, by Age Group, Yearly Trend
MDCR ENROLL AB 5. Total Medicare Enrollment: Part A and/or Part B Enrollees, by Demographic Characteristics
MDCR ENROLL AB 6. Total Medicare Enrollment: Part A and/or Part B Enrollees, by Type of Entitlement and Demographic Characteristics
MDCR ENROLL AB 7. Total Medicare Enrollment: Part A and/or Part B Total, Aged, and Disabled Enrollees, by Area of Residence
MDCR ENROLL AB 8. Total Medicare Enrollment: Part A and/or Part B Enrollees, by Type of Entitlement and Area of Residence

The Medicare Fee-For-Service Public Provider Enrollment dataset includes information on providers who are actively approved to bill Medicare or have completed the 855O at the time the data was pulled from the Provider Enrollment, Chain, and Ownership System (PECOS). The release of this provider enrollment data is not related to other provider information releases such as Physician Compare or Data Transparency. Note: This full dataset contains more records than most spreadsheet programs can handle, which will result in an incomplete load of data. Use of a database or statistical software is required.Resources for Using and Understanding the DataThese files are populated from PECOS and contain basic enrollment and provider information, reassignment of benefits information and practice location city, state and zip. These files are not intended to be used as real time reporting as the data changes from day to day and the files are updated only on a quarterly basis. If any information on these files needs to be updated, the provider needs to contact their respective Medicare Administrative Contractor (MAC) to have that information updated. This data does not include information on opt-out providers. Information is redacted where necessary to protect Medicare provider privacy.

This statistic depicts the projected change in Medicare enrollment in the United States from 2000 to 2099. In 2000, the number of enrollees amounted to just under ** million people, whereas the projected number for the year 2060 is expected to amount to nearly ** million enrollees.

In 2022, approximately ** percent of all Medicare Advantage enrollees were aged between 65 and 74 years in the United States. This statistic depicts the distribution of Medicare Advantage (MA) enrollees in the United States in 2022, by age.

The Insurance Coverage of Noninstitutionalized Medicare Beneficiaries dataset includes data about Medicare insurance coverage beneficiaries aged 65 in the United States by age, gender, race, poverty and marital status between 1992 and 2015.

Dataset

This dataset was created by NamitaSharma3

Contents

This dataset contains data related to electrophysiologic testing per 1,000 Medicare enrollees. Data is for 2012 at the HRR level. Rates are adjusted for age, sex, and race.

The CMS Program Statistics - Medicare Total Enrollment tables provide data on characteristics of the Medicare-covered populations.

For additional information on enrollment, providers, and Medicare use and payment, visit the CMS Program Statistics page.

These data do not exist in a machine-readable format, 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 AB 1. Total Medicare Enrollment: Total, Original Medicare, and Medicare Advantage and Other Health Plan Enrollment, Yearly Trend MDCR ENROLL AB 2. Total Medicare Enrollment: Total, Original Medicare, Medicare Advantage and Other Health Plan Enrollment, and Resident Population, by Area of Residence MDCR ENROLL AB 3. Total Medicare Enrollment: Part A and/or Part B Total, Aged, and Disabled Enrollees, Yearly Trend MDCR ENROLL AB 4. Total Medicare Enrollment: Part A and/or Part B Enrollees, by Age Group, Yearly Trend MDCR ENROLL AB 5. Total Medicare Enrollment: Part A and/or Part B Enrollees, by Demographic Characteristics MDCR ENROLL AB 6. Total Medicare Enrollment: Part A and/or Part B Enrollees, by Type of Entitlement and Demographic Characteristics MDCR ENROLL AB 7. Total Medicare Enrollment: Part A and/or Part B Total, Aged, and Disabled Enrollees, by Area of Residence MDCR ENROLL AB 8. Total Medicare Enrollment: Part A and/or Part B Enrollees, by Type of Entitlement and Area of Residence

In 2025, some *** million Medicare Advantage (MA) beneficiaries were enrolled in a plan from the UnitedHealth Group Inc., which accounts for roughly ** percent of all MA enrollment. Medicare Advantage is an option that allows the beneficiary to receive care management from private health plan networks. It often also provides prescription drug benefits to the beneficiary without them having to enroll in a stand-alone Part D drug plan. This statistic depicts the leading Medicare Advantage organizations in the United States as of March 2025, based on enrollment.

This dataset contains data related to Magnetic Resonance Imaging (MRI) of head per 1,000 Medicare enrollees. Data is for 2012 at the HRR level. Rates are adjusted for age, sex, and race.

In 2021, California reported some 6.49 million Medicare beneficiaries and therefore was the U.S. state with the highest number of beneficiaries. Medicare is a U.S. publicly funded health insurance program that covers those that are aged 65 years and older and those that have certain disabilities. This statistic depicts the leading 10 U.S. states based on their number of Medicare beneficiaries in 2021.