Medicare Advantage

Medicare plan choices around Butte, MT for 2027

How Medicare plan choices vary around Butte for 2027 — plain-language Medicare information for Butte, Montana.

BUTTE, Mont. — If you live in Butte and are shopping for 2027 Medicare coverage, one of the first things worth knowing is that plan availability is set by county, not by city or ZIP code. That means your neighbors a county over may see a different menu of Medicare Advantage and Part D options than you do — even inside the same metro region.

Butte sits in Silver Bow County, and the number of plans available there is the number that matters when you compare options on Medicare.gov. Here's a look at how the local picture shaped up for 2026, plus the program-wide rules that apply for 2027 no matter which county you call home.

Why county lines matter more than city limits

Medicare Advantage and Part D plans are approved and priced by service area, and those service areas are drawn along county boundaries. Butte is in Silver Bow County, where Medicare uses that county code to decide which plans you can join. If you have family in Deer Lodge, Jefferson, or Madison counties nearby, their choices could look different from yours — sometimes very different.

That's why, when you use the Medicare Plan Finder at Medicare.gov, the first thing it asks for is your ZIP code. Behind the scenes, it's mapping you to a county.

What the Butte-area numbers looked like for 2026

For 2026, Silver Bow County had 13 Medicare Advantage plans available, offered by 2 carriers that include prescription drug coverage (MA-PD). There were 0 stand-alone Part D plans listed at the county level in the data set used here, so most drug coverage for local Medicare Advantage members came bundled inside an MA-PD plan. The 2027 lineup is described in each plan's ANOC and on Medicare.gov's Plan Finder. (If you have Original Medicare and want a stand-alone Part D plan, always confirm current availability on Medicare.gov — the national list of Part D plans is broader than any single county view might suggest.)

Silver Bow County is also home to about 6,972 residents age 65 and older, a group large enough that carriers pay attention to the market but small enough that plan menus can shift year to year.

None of the Medicare Advantage contracts serving the area currently carry a 4-star or higher overall rating in the data we reviewed. Star Ratings are CMS's quality scorecard — they measure things like customer service, member complaints, and care quality — and they're one tool among several to compare plans. They aren't a recommendation, and a lower or missing star rating doesn't automatically mean a plan is a poor fit for you.

How Butte compares to the wider metro

Because Silver Bow is a smaller county by population, the number of plans available here tends to be more compact than what you'd find in a larger Montana metro like Billings or Missoula. That isn't inherently good or bad — fewer plans can mean an easier comparison, while more plans can mean more networks to sort through. What matters is whether the plans on your county's list cover the doctors, hospitals, and medications you actually use.

If you split time between Butte and another county — say, a second home or long visits with family — check plan rules on travel coverage and out-of-area care before you enroll.

Program rules that apply everywhere

Some pieces of Medicare don't depend on where you live:

• Part D out-of-pocket cap: The cap on what you pay out of pocket for covered prescriptions is $2,100 in 2026 and $2,400 in 2027. Once you hit that amount, you pay nothing more for covered drugs the rest of the calendar year.
• Part D deductible: The maximum allowed deductible is $615 in 2026 ($700 in 2027), though plans may set it lower.
• No more donut hole: As of 2025, the old coverage gap is gone. Part D now has three phases: deductible, initial coverage, and catastrophic.
• Medicare Prescription Payment Plan: This optional program lets you spread your drug costs across the calendar year in monthly installments instead of paying big bills at the pharmacy counter.
• IRMAA: If your 2024 income was above $109,000 (single filer), you may pay an income-related surcharge on Part B and Part D premiums in 2026.

Key dates to circle

The Annual Enrollment Period runs Oct. 15 through Dec. 7, 2026. That's when most people compare, switch, or drop Medicare Advantage and Part D plans for 2027 coverage that starts Jan. 1.

If you're already in a Medicare Advantage plan and change your mind after Jan. 1, the Medicare Advantage Open Enrollment Period (Jan. 1 – March 31) gives you one chance to switch to another MA plan or return to Original Medicare with a stand-alone Part D plan.

Where to get personalized help

Because the plans available in Silver Bow County can change from year to year, the safest move is to check current options directly each fall — even if you're happy with your current coverage.

• Medicare.gov has the official Plan Finder, updated for 2027 during Open Enrollment.
• 1-800-MEDICARE (1-800-633-4227) is available 24/7.
• Montana SHIP (State Health Insurance Assistance Program) offers free, unbiased one-on-one counseling for Montana residents, including in the Butte area.