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Medicare plans in Custer County, MT — 2026
What agents look up before working a county: plan count, carriers, $0-premium share, star distribution, MOOP range, the 65+ and 60–64 population, and what changed since last year.
In 2026, Custer County, Montana has 17 Medicare plans (5 Medicare Advantage with drug coverage, 1 without, 11 standalone Part D, 0 Special Needs) from 7 carriers. 3 Medicare Advantage plans have a $0 premium. The lowest in-network out-of-pocket maximum is $4,700.
Market snapshot
- Residents 65 and older
- 2,482
- Residents 60–64, aging in over the next five years
- 964
- Medicare eligibles
- 2,873
- Medicare Advantage penetration
- 14.1%
- Plans per 1,000 residents 65+
- 6.8
Carriers by number of plans
- Blue Cross and Blue Shield of Montana — 6 plans
- Humana — 3 plans
- HealthSpring — 2 plans
- UnitedHealthcare — 2 plans
- Wellcare — 2 plans
- Aetna Medicare — 1 plan
- MedicareBlue Rx — 1 plan
Plans sorted by CMS star rating, then premium
| Plan | Carrier | Category | Plan type | Monthly premium | Drug deductible | Out-of-pocket maximum | Star rating |
|---|
| Blue Cross Medicare Advantage Choice Plus (PPO) (H0107-005-0) | Blue Cross and Blue Shield of Montana | MA-PD | PPO | $0 | $615 | $9,250 | 3.5 |
|---|
| Blue Cross Medicare Advantage Dental Premier (PPO) (H0107-007-0) | Blue Cross and Blue Shield of Montana | MA-PD | PPO | $0 | $615 | $8,100 | 3.5 |
|---|
| Blue Cross Medicare Advantage Health Choice (PPO) (H0107-010-0) | Blue Cross and Blue Shield of Montana | MA-PD | PPO | $0 | $615 | $6,750 | 3.5 |
|---|
| Blue Cross Medicare Advantage Classic (PPO) (H0107-003-0) | Blue Cross and Blue Shield of Montana | MA-PD | PPO | $74 | $450 | $6,500 | 3.5 |
|---|
| Blue Cross Medicare Advantage Optimum (PPO) (H0107-004-0) | Blue Cross and Blue Shield of Montana | MA-PD | PPO | $128 | $300 | $4,700 | 3.5 |
|---|
| Blue Cross Medicare Advantage Protect (PPO) (H0107-011-0) | Blue Cross and Blue Shield of Montana | MA | PPO | | | $6,500 | 3.5 |
|---|
| Humana Basic Rx Plan (PDP) (S5884-145-0) | Humana | PDP | PDP | $4.70 | $615 | | Not rated |
|---|
| AARP Medicare Rx Saver from UHC (PDP) (S5921-370-0) | UnitedHealthcare | PDP | PDP | $5.30 | $615 | | Not rated |
|---|
| Wellcare Value Script (PDP) (S4802-158-0) | Wellcare | PDP | PDP | $9.60 | $615 | | Not rated |
|---|
| Wellcare Classic (PDP) (S4802-089-0) | Wellcare | PDP | PDP | $12.70 | $615 | | Not rated |
|---|
Showing 10 of 17 plans.
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About this data
Source: CMS Medicare Advantage/Part D Landscape files, plan year 2026; population: U.S. Census Bureau ACS 5-year 2024; MA penetration: CMS September 2026.
This page summarizes publicly available CMS data. It is not a plan finder and does not recommend plans. To compare and enroll in plans, use Medicare.gov or talk to a licensed agent. Medicare.gov plan finder.