CMS's own filing for Montana
Medicare Advantage plans in Montana, by the numbers
What CMS published about Medicare enrollment in Montana: 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 Montana sits among the states
29.9% of everyone with Medicare in Montana is in a Medicare Advantage or other health plan rather than Original Medicare. That puts Montana 48th of 51, between Vermont above it and Maryland 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 Montana
| Measure | What CMS published | Source |
|---|---|---|
| People with Medicare | In 2025, 267,875 people were enrolled in Medicare in Montana. | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
| In Medicare Advantage and other health plans | In 2025, 80,222 of them were in Medicare Advantage or another health plan rather than Original Medicare in Montana (29.9% of everyone with Medicare in Montana). | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
| In Original Medicare | In 2025, 187,653 stayed in Original Medicare in Montana (70.1% of everyone with Medicare in Montana). | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
| In a stand-alone Part D drug plan | In 2025, 130,426 bought drug coverage as a stand-alone Part D plan in Montana (48.7% of everyone with Medicare in Montana). | CMS Medicare Monthly Enrollment, 2025 read September 2026 |
| Also covered by Medicaid | In 2025, 24,646 were covered by Medicaid as well as Medicare in Montana (9.2% of everyone with Medicare in Montana). | 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
Montana: 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: Montana", updated 2026-09-11, https://medicareplancomparison.com/states/montana/.
Download the Montana figures (CSV), free to reuse with citation.