Medicare Enrollment by Age Group, 2007 - 2016

Description: The number of people enrolled in Medicare has increased gradually over time. There were 46.7 million beneficiaries in 2007 and 59.8 million beneficiaries in 2016. The age distribution of the population has remained fairly stable over time.

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. Age is calculated based on the age of the Medicare beneficiary as of December 31. If the beneficiary expired, the age is calculated based on age at time of death.

Chart Date: October 11, 2018

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Medicare Enrollment by Race, 2007 - 2016

Description: The racial distribution of Medicare beneficiaries has changed very little over time. There are proportionately fewer whites in 2016 compared to 2007 (79.9% versus 83.3%, respectively).

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. American Indian, Native American, Other, and Unknown races are grouped together due to small cell sizes. The race variable comes from the CMS Enrollment Database; an additional race classification variable is available in the data files, called RTI Race – which more accurately captures the proportion of Hispanics and Asians.

Chart Date: October 11, 2018

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Medicare Enrollment by Sex, 2007 - 2016

Description: The distribution of Medicare beneficiaries by sex has remained stable over time, with approximately 55% of beneficiaries classified as female.

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year.

Chart Date: October 11, 2018

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Medicare Enrollment by Coverage Type, 2007 - 2016

Description: The proportion of beneficiaries with a full year of fee-for-service coverage (11 or 12 months) decreased from 67% in 2007 to 54.5% in 2016.

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. Full or Nearly Full fee-for-service (FFS) indicates the beneficiary had 11 or 12 months of both Part A and Part B fee-for service coverage, or for persons who died during the year, from January 1 until date of death. Non-FFS indicates the beneficiary had less than 11 months of Part A and Part B fee-for-service coverage includes people with more than one month of HMO coverage. Some FFS beneficiaries are participants in case or disease management demonstration projects (effective 2005 forward). These beneficiaries are not considered to have HMO coverage during these months.

Chart Date: October 11, 2018

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Medicare Enrollment by Medicare Status, 2007 - 2016

Description: The proportion of beneficiaries classified as Disabled has been quite stable over time, from 16.5% of beneficiaries in 2007 to 15.6% in 2016.

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. Classification used the Medicare status code, and combined end stage renal disease (ESRD) and Disabled categories into the “Disabled” grouping.

Chart Date: October 11, 2018

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Medicare Enrollment by Dual Status, 2007 - 2016

Description: The proportion of beneficiaries classified as dually enrolled in Medicare and Medicaid has increased slightly over time, from 15.7% in 2007 to 16.5% in 2016. The proportion eligible for full dual benefits has changed very little over time (12.7% in 2007 to 12.1% in 2016), however the proportion eligible for partial dual benefits has increased from 3.0% in 2007 to 4.4% in 2016.

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. Classification used the state-reported dual status code (variable called DUAL_STUS_CD_MM) to identify beneficiaries dually enrolled in Medicare and Medicaid. Dual coverage was defined as DUAL_STUS_CD_MM = 01, 02, 03, 04, 05, 06 or 08 for 11 or 12 months of the year, or until time of death. A beneficiary was considered a full benefit dual if they had DUAL_STUS_CD_MM = 02, 04 or 08 for a minimum of one month during the year. All other duals were considered partial.

Chart Date: October 11, 2018

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Medicare Enrollment, 2016 by Age Group

Description: The population aged 65-74 years comprises the largest age grouping for beneficiaries (48.3% of all beneficiaries).

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. Age is calculated based on the age of the Medicare beneficiary as of December 31. If the beneficiary expired, the age is calculated based on age at time of death.

Chart Date: October 11, 2018

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Medicare Enrollment, 2016 by Racial Group

Description: The white racial group comprises the largest proportion of beneficiaries, by racial group (79.9% of beneficiaries).

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. American Indian, Native American, Other, and Unknown races are grouped together due to small cell sizes.

Chart Date: October 11, 2018

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Medicare Enrollment by Age Group and FFS Status, 2007 - 2016

Description: The majority of Medicare beneficiaries are enrolled in fee-for-service (FFS) rather than managed care (i.e., Medicare Advantage [MA] plans). Beginning in 2007, there is a shift away from FFS, which is more pronounced each year. Medicare enrollees who were 65-74 years of age were the least likely group to select FFS Medicare. By 2016, the proportion of beneficiaries 65-74 years old who were FFS declined to 49.0%.

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. Full or Nearly Full fee-for-service (FFS) indicates the beneficiary had 11 or 12 months of both Part A and Part B fee-for service coverage, or for persons who died during the year, from January 1 until date of death. Non-FFS indicates the beneficiary had less than 11 months of Part A and Part B fee-for-service coverage includes people with more than one month of HMO coverage. Some FFS beneficiaries are participants in case or disease management demonstration projects (effective 2005 forward). These beneficiaries are not considered to have HMO coverage during these months. Age is calculated based on the age of the Medicare beneficiary as of December 31, YYYY. If the beneficiary expired, the age is calculated based on age at time of death.

Chart Date: October 11, 2018

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Medicare Enrollment by Coverage Type and Racial Group, 2016

Description: The racial group with the highest proportion of people with full/nearly full fee-for-service (FFS) coverage was white (56.7%). For the remainder of racial groups the proportion of non-FFS was higher than FFS. For the black racial group, 48.8% were enrolled in FFS.

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year. Full or Nearly Full fee-for-service (FFS) indicates the beneficiary had 11 or 12 months of both Part A and Part B fee-for service coverage, or for persons who died during the year, from January 1 until date of death. Non-FFS indicates the beneficiary had less than 11 months of Part A and Part B fee-for-service coverage includes people with more than one month of HMO coverage. Some FFS beneficiaries are participants in case or disease management demonstration projects (effective 2005 forward). These beneficiaries are not considered to have HMO coverage during these months. American Indian, Native American, Other, and Unknown races are grouped together due to small cell sizes. An additional Race classification variable is available from 2006 forward, called RTI Race – which more accurately captures the proportion of Hispanics.

Chart Date: October 11, 2018

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Medicare Enrollment, 2016

Description: The number of people enrolled in Medicare varied by state. There were a total of 59.8 million Medicare beneficiaries in 2016. Alaska had the smallest number of beneficiaries (93,247), and California had the largest (6,100,283).

Technical Notes: Counts include all Medicare beneficiaries who were enrolled in Medicare on or after January 1 of the year.

Chart Date: October 11, 2018

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