CMS's own filing for Missouri
Medicare Advantage plans in Missouri, by the numbers
What CMS published about Medicare enrollment in Missouri: 5 of 5 measures filed for this state, each one a field of the state's own row with the date the file was read.
- figures published by CMS
- 5
- counts CMS withheld
- 0
- the day this file was read
- 2026-09-11
Where Missouri sits among the states
53.8% of everyone with Medicare in Missouri is in a Medicare Advantage or other health plan rather than Original Medicare. That puts Missouri 18th of 51, between Texas above it and Utah below. Across the country the same figure runs from 62.8% in Michigan down to 3.0% in Alaska, so what counts as the ordinary choice depends on where a person lives, and this is what it is where they do.
Every measure CMS filed for Missouri
| Measure | What CMS published | Source |
|---|---|---|
| People with Medicare | In 2025, 1,354,619 people were enrolled in Medicare in Missouri. | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
| In Medicare Advantage and other health plans | In 2025, 728,826 of them were in Medicare Advantage or another health plan rather than Original Medicare in Missouri (53.8% of everyone with Medicare in Missouri). | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
| In Original Medicare | In 2025, 625,794 stayed in Original Medicare in Missouri (46.2% of everyone with Medicare in Missouri). | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
| In a stand-alone Part D drug plan | In 2025, 440,705 bought drug coverage as a stand-alone Part D plan in Missouri (32.5% of everyone with Medicare in Missouri). | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
| Also covered by Medicaid | In 2025, 189,374 were covered by Medicaid as well as Medicare in Missouri (14.0% of everyone with Medicare in Missouri). | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
A withheld figure means CMS did not publish the count, never that the count is zero.
Cite or embed this figure
Missouri: 5 Medicare enrollment figures published by CMS and 0 counts withheld (Medicare Plan Comparison State Enrollment Index).
Cite as: "Medicare Plan Comparison State Enrollment Index: Missouri", updated 2026-09-11, https://medicareplancomparison.com/states/missouri/.
Download the Missouri figures (CSV), free to reuse with citation.