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Substantial Growth In Medicare Advantage And Implications For Reform.

Erin Trish¹, Samuel Valdez², Paul B Ginsburg³

¹Erin Trish (etrish@usc.edu), University of Southern California, Los Angeles, California.

Health Affairs (Project Hope)

|February 6, 2023

Summary

This summary is machine-generated.

Medicare Advantage (MA) enrollment surged over 300% from 2006-2022, while traditional Medicare enrollment fell. By 2022, nearly half of all Medicare beneficiaries were enrolled in MA plans.

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Area of Science:

Health Services Research
Public Health
Health Policy Analysis

Background:

Medicare Advantage (MA) is a managed care option replacing traditional Medicare.
Understanding enrollment trends is crucial for healthcare policy and resource allocation.

Purpose of the Study:

To analyze Medicare Advantage enrollment trends from 2006 to 2022.
To assess the penetration of MA plans nationally and at the county level.

Main Methods:

Analysis of Medicare beneficiary enrollment data from 2006 through 2022.
Calculation of MA enrollment growth and traditional Medicare enrollment changes.
Determination of national and county-level MA penetration rates.

Main Results:

Medicare Advantage enrollment increased by 22.2 million beneficiaries (337.0%) between 2006 and 2022.
Traditional Medicare enrollment decreased by 1.0 million beneficiaries (-2.9%) during the same period.
In 2022, national MA penetration reached 49.9%, with 24.0% of beneficiaries in counties having ≥60% MA penetration.

Conclusions:

Medicare Advantage has experienced substantial growth, becoming a dominant enrollment pathway.
A significant portion of Medicare beneficiaries are now in areas with high MA plan availability.
These trends indicate a major shift in Medicare beneficiary choices and market dynamics.