Medicare Advantage · State · 2026 plan year

Medicare Advantage in Montana

According to the Centers for Medicare & Medicaid Services (CMS) 2026 plan-year files, 31 plans across 56 counties; find your county to compare every plan available where you live.

31
Plans available
3.6★
Avg CMS rating
$60.44
Avg premium/mo
0
5-star plans

The short answer

Montana ranks #43 of 49 by Medicare Advantage plan inventory (31 plans) but #46 by average CMS star (3.56★).

#43
inventory rank
31
plans statewide
#46
avg star rank
3.56★
mean CMS rating

Plan inventory and average star are independent CMS signals; a large catalog is not the same as the highest mean quality score.

Product mix · MT plans_unique

How 22 Montana plans split by CMS plan type

Exclusive CMS plan-type codes for this state's representative plans_unique rows, orthogonal to the star-bucket chart below. Source: CMS landscape, 2026.

Lower average CMS star band

Montana in the narrower-inventory third

Montana ranks #46 of 49 rated states by mean CMS star (3.56★) - bottom-third quality band vs the rated corpus. According to CMS 2026 plan-year filings, Montana beneficiaries can choose from 31 distinct Medicare Advantage plans marketed across 56 counties - a bottom-third inventory book (#43 of 49); county listings beat the state total here. No plan in this state currently holds the top 5-star tier for the 2026 plan year. County (FIPS) service areas still decide what is sold where you live - open a county below before the October 15 - December 7 Annual Election Period closes.

plans #43/49 · stars #46/49 · 56 counties · avg prem $60.44/mo

Lower-star MA quality band in Montana

Montana offers 31 Medicare Advantage plans across 56 counties. Mean star 3.6★ on a narrower inventory book (star rank #46/49); sparse markets make each county row more decisive. Confirm premiums and networks on <a class="underline" href="https://www.medicare.gov/plan-compare/" target="_blank" rel="external noopener">Medicare.gov Plan Compare</a>.

Where Montana sits on CMS quality

Average CMS star rating across the state's own Medicare Advantage plans, against every state and territory in the CMS file

3.56★ Top 92% higher than 8% of 49 states and territories

3.25★–3.5★: 1 states and territories (2%). Below this entry. 3.5★–3.75★: 13 states and territories (27%). This entry sits in this band. 3.75★–4★: 23 states and territories (47%). Above this entry. 4★–4.25★: 10 states and territories (20%). Above this entry. 4.25★–4.5★: 1 states and territories (2%). Above this entry. 4.5★–4.75★: 0 states and territories (0%). Above this entry. 4.75★–5★: 1 states and territories (2%). Above this entry. This state 3.25★ 5★ every state and territory, bucketed by value

Each bar is a band; taller bars hold more states and territories. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Advantage Star Ratings 2026 · 2026-09-01

Counties in Montana

Click a county to see all Medicare Advantage plans available in your area.

Beaverhead
9 plans
3.7
$57.43/mo avg
Big Horn
15 plans
3.6
$65.54/mo avg
Blaine
0 plans
N/R
Broadwater
11 plans
3.7
$58.25/mo avg
Carbon
11 plans
3.7
$50.33/mo avg
Carter
0 plans
N/R
Cascade
21 plans
3.8
$30.08/mo avg
Chouteau
17 plans
3.6
$40.08/mo avg
Custer
6 plans
3.5
$40.40/mo avg
Daniels
2 plans
2.5
$118.00/mo avg
Dawson
0 plans
N/R
Deer Lodge
12 plans
3.7
$53.78/mo avg
Fallon
2 plans
2.5
$118.00/mo avg
Fergus
15 plans
3.6
$42.36/mo avg
Flathead
25 plans
3.7
$41.26/mo avg
Gallatin
15 plans
3.9
$37.42/mo avg
Garfield
2 plans
2.5
$118.00/mo avg
Glacier
19 plans
3.5
$52.43/mo avg
Golden Valley
19 plans
3.5
$52.43/mo avg
Granite
11 plans
3.7
$58.25/mo avg
Hill
6 plans
3.5
$40.40/mo avg
Jefferson
12 plans
3.7
$53.78/mo avg
Judith Basin
16 plans
3.6
$41.92/mo avg
Lake
16 plans
3.6
$40.33/mo avg
Lewis and Clark
16 plans
3.8
$39.46/mo avg
Liberty
15 plans
3.6
$42.36/mo avg
Lincoln
13 plans
3.6
$52.10/mo avg
Madison
11 plans
3.7
$58.25/mo avg
McCone
4 plans
3.0
$108.33/mo avg
Meagher
15 plans
3.6
$42.36/mo avg
Mineral
15 plans
3.6
$42.36/mo avg
Missoula
16 plans
3.8
$39.46/mo avg
Musselshell
14 plans
3.6
$38.18/mo avg
Park
11 plans
3.7
$48.22/mo avg
Petroleum
2 plans
2.5
$118.00/mo avg
Phillips
2 plans
2.5
$118.00/mo avg
Pondera
17 plans
3.6
$40.08/mo avg
Powder River
2 plans
2.5
$118.00/mo avg
Powell
12 plans
3.7
$53.78/mo avg
Prairie
2 plans
2.5
$118.00/mo avg
Ravalli
16 plans
3.5
$61.23/mo avg
Richland
0 plans
N/R
Roosevelt
2 plans
2.5
$118.00/mo avg
Rosebud
15 plans
3.6
$38.08/mo avg
Sanders
16 plans
3.6
$40.33/mo avg
Sheridan
0 plans
N/R
Silver Bow
13 plans
3.6
$52.10/mo avg
Stillwater
11 plans
3.7
$48.22/mo avg
Sweet Grass
13 plans
3.6
$40.20/mo avg
Teton
18 plans
3.6
$63.39/mo avg
Toole
14 plans
3.6
$38.18/mo avg
Treasure
8 plans
3.8
$36.33/mo avg
Valley
2 plans
2.5
$118.00/mo avg
Wheatland
13 plans
3.6
$40.20/mo avg
Wibaux
0 plans
N/R
Yellowstone
26 plans
3.6
$40.12/mo avg

Narrower markets: star ratings and county rows matter more than state totals.

Note: PlainMedicare provides publicly available CMS data for informational purposes only. This is not medical or insurance advice. Consult a licensed Medicare counselor or insurance agent before making enrollment decisions. Plan availability and premiums change annually, always verify with Medicare.gov or 1-800-MEDICARE.
Data sourced from the Centers for Medicare & Medicaid Services (CMS). Retrieved and formatted by PlainMedicare

Using Montana's Medicare Advantage market

Plan availability and star ratings vary by county, not just by state.

  • Montana beneficiaries can choose from 31 distinct Medicare Advantage plans across 56 counties (#43 of 49 states by plan count) - look up your own county for what's actually sold there. Browse by county
  • The state's mean CMS star rating ranks #46 of 49 - see how star ratings are built before comparing plans. How star ratings work
  • Weigh total cost, not just premium: compare plan details using Medicare.gov before you enroll. Medicare Plan Compare

State-level figures average every county's filings; the plans actually sold where you live can differ from the state total.

PlainMedicare is rendered directly from CMS Medicare Advantage and Part D public files, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a correction. Data current as of 2026-09-01.

CMS lists 131,985 Medicare Advantage and Part D plan records in the current public files. PlainMedicare refreshes this registry with each annual release.