Montana Medicare beneficiaries have access to a range of coverage options, state-specific protections, and free counseling services. This comprehensive Montana Medicare guide covers your SHIP office contacts, Medigap plan availability, birthday rule protections, Medicare Savings Program eligibility, Medicare Advantage options, and how to compare plans. Whether you are turning 65, helping a parent navigate Medicare, or re-evaluating your coverage, understanding Montana Medicare rules is essential for making informed decisions.
All information in this guide has been verified against official state sources, CMS data, and NAIC reports as of April 2026.
In This Montana Medicare Guide:
Montana SHIP — Free Medicare Counseling
Every state has a State Health Insurance Assistance Program (SHIP) that provides free, unbiased Medicare counseling. Montana’s SHIP program can help you understand your coverage options, compare plans, resolve billing issues, and navigate enrollment periods at no cost.
| SHIP Program | Montana State Health Insurance Assistance Program (SHIP) |
| Phone | 1-800-551-3191 |
| Website | https://dphhs.mt.gov/SLTC/aging/SHIP |
SHIP counselors are trained volunteers and staff who are not affiliated with any insurance company. They do not sell plans. Contact your Montana SHIP office before making any major Medicare decisions.
Montana Medigap (Medicare Supplement) Plans
Medigap plans in Montana help cover out-of-pocket costs not paid by Original Medicare, including the Part A deductible, Part B coinsurance, and skilled nursing facility copays. Medigap plans are standardized by federal law, meaning Plan G from one carrier covers the same benefits as Plan G from another carrier. The difference is premium cost.
Plans available in Montana: A, B, C, D, F, G, K, L, M, N
Most popular plan: Plan G is the most popular Medigap plan in Montana. Plan G covers all gaps in Original Medicare except the annual Part B deductible ($240 in 2026). Plan N is the most popular lower-premium alternative, with small copays for some doctor visits and ER visits.
Pricing method: Montana uses community-rated Medigap pricing. This is the most favorable method for consumers because premiums are the same regardless of age. Your premium will not increase simply because you get older.
The average monthly Plan G premium for a 65-year-old in Montana is approximately 129 to 220 (lowest available is 129 from WMI Mutual; varies significantly by carrier and rating method). Plan N averages approximately 107 to 180 (lowest available is 107 from WMI Mutual; varies by carrier and rating method) per month. Actual premiums vary by carrier, age, gender, tobacco use, and zip code. Always compare quotes from at least three carriers.
Montana Medigap Switching Rights
Montana does not have a Medigap birthday rule. Your primary opportunity to buy or switch Medigap plans without medical underwriting is during your initial Medigap Open Enrollment Period, which lasts 6 months starting when you first enroll in Medicare Part B at age 65 or older.
After your initial OEP closes, you may face medical underwriting if you apply for a new Medigap policy. However, federal law provides guaranteed issue rights in specific situations, such as losing employer coverage or leaving a Medicare Advantage plan during your first year.
Montana guaranteed issue protections: Montana follows the federal 6-month Medigap OEP. Beyond that, Montana requires all Medigap insurers to offer guaranteed-issue coverage to Medicare beneficiaries under age 65 who qualify due to disability or ESRD. Montana also provides guaranteed issue rights for individuals who lose Medicaid eligibility. If an existing Medigap policy ends, enrollees may apply for a new policy within 63 calendar days without medical underwriting.
Montana Medicare Advantage (Part C)
Approximately 266000 people in Montana are enrolled in Medicare. About 30 of Montana Medicare beneficiaries choose Medicare Advantage plans, with the remainder on Original Medicare with or without Medigap supplement coverage.
Medicare Advantage plans in Montana are offered by private insurers as an alternative to Original Medicare. Most MA plans include prescription drug coverage (Part D) and often add dental, vision, and hearing benefits. However, MA plans use provider networks, which can limit your choice of doctors and hospitals.
Key Medicare Advantage considerations in Montana:
- Networks matter: HMO plans require you to use in-network providers except in emergencies. PPO plans allow out-of-network care at higher cost.
- $0 premium plans: Many Montana MA plans have $0 monthly premiums (you still pay your Part B premium).
- Maximum Out-of-Pocket (MOOP): MA plans cap your annual spending, unlike Original Medicare which has no cap.
- Star ratings: CMS rates MA plans 1-5 stars. Higher-rated plans often have lower costs and better coverage.
Top Medicare Advantage carriers in Montana by enrollment:
- Blue Cross Blue Shield of Montana
- Humana
- UnitedHealthcare (AARP Medicare Complete)
Montana Medicare Financial Help Programs
Montana offers Medicare Savings Programs (MSPs) that help low-income Medicare beneficiaries pay for premiums, deductibles, and copays. The four programs are:
- QMB (Qualified Medicare Beneficiary): Pays Part A and Part B premiums, deductibles, coinsurance, and copays.
- SLMB (Specified Low-Income Medicare Beneficiary): Pays Part B premiums only.
- QI (Qualifying Individual): Pays Part B premiums (limited funding, first-come first-served).
- QDWI (Qualified Disabled Working Individual): Pays Part A premiums for disabled workers.
Montana MSP eligibility: QMB: 1380/month individual, 1854/month couple; SLMB: 1646/month individual, 2214/month couple; QI: 1846/month individual, 2485/month couple (2026 figures including 20 dollar income disregard)
Apply through your local SHIP office or your state Medicaid agency for free help determining eligibility.
Top Medicare Insurance Companies in Montana
Top Medigap carriers in Montana:
- WMI Mutual
- Nassau
- Mutual of Omaha
- Transamerica
- Blue Cross Blue Shield of Montana
When comparing carriers, focus on premium cost (for identical standardized Medigap plans, benefits are the same — only price differs), financial strength ratings from AM Best (A or higher), customer satisfaction ratings, and claims processing speed.
Montana Medicare Enrollment Periods
Understanding Medicare enrollment deadlines prevents costly late enrollment penalties:
- Initial Enrollment Period (IEP): 7-month window around your 65th birthday (3 months before, birthday month, 3 months after). Enroll in Parts A and B during this period.
- Medigap Open Enrollment: 6 months beginning the first day of the month when the individual turns 65 and is enrolled in Medicare Part B (federal standard; Montana does not extend this period). During this period, insurance companies cannot deny you Medigap coverage or charge higher premiums based on health conditions.
- Annual Enrollment Period (AEP): October 15 through December 7 each year. Switch between Original Medicare and Medicare Advantage, change MA plans, or add/change Part D drug plans.
- Medicare Advantage Open Enrollment Period (OEP): January 1 through March 31. Switch MA plans or return to Original Medicare (and add a Medigap plan, subject to underwriting).
- Special Enrollment Periods (SEP): Available when you lose employer coverage, move, or qualify for other life events.
Additional Montana Medicare protections: Montana mandates all Medigap insurers offer guaranteed-issue policies to Medicare beneficiaries under age 65 who qualify due to disability or ESRD. Montana also provides guaranteed issue rights when losing Medicaid coverage. A 63-day continuity-of-coverage window applies when a Medigap policy ends. Rates for under-65 enrollees are not capped and may be up to 4 times higher than over-65 rates.
Compare Montana Medicare Plans
Ready to compare Medicare options in Montana? Use the official Medicare Plan Finder or contact your local SHIP counselor for free, unbiased help.
Official Sources & Resources
- Medicare.gov: medicare.gov
- Montana Commissioner of Securities and Insurance (CSI), Office of the State Auditor: https://csimt.gov
- Montana State Health Insurance Assistance Program (SHIP): https://dphhs.mt.gov/SLTC/aging/SHIP
- CMS.gov: cms.gov
- NAIC: naic.org
This Montana Medicare guide was last verified against official sources in April 2026. If you notice outdated information, please contact us.