Your 2027 Guide to Medicare Advantage in Oregon

For 2027, 31 Medicare Advantage plans are leaving Oregon, 25 plans are new and 40 plans are changing, out of the 101 offered for 2026. This guide explains how the plans work in Oregon and what to compare — no rankings, no pressure.

Medicare coverage isn't uniform across Oregon. Plans are approved county by county, so what's on offer can shift from one neighboring area to the next — the reason we break the state down by city below.

About 54% across Oregon have chosen Medicare Advantage over Original Medicare, though that share swings a lot depending on where you live.

You'll find the carriers operating in Oregon, how the parts of Medicare relate, the 2027 figures everyone shares, when you can enroll, where to get unbiased help, and a guide for every city. Educational only, with no rankings.

Advantage or Original Medicare? The basic fork

Every Medicare decision in Oregon branches from one question: do you want your coverage delivered through a private Medicare Advantage plan, or do you want to stay with Original Medicare and build around it?

Go the Medicare Advantage route and a private plan (approved by Medicare) handles your Part A and Part B, typically folds in drug coverage — within a network and a county-based service area.

Stay with Original Medicare and you keep nationwide provider freedom, then usually add a stand-alone Part D drug plan and often a Medigap policy to cover what Original Medicare doesn't.

There's no single winner here — it comes down to your providers, your medications, and your budget. We explain the trade-offs and leave the choice to you; we don't rank plans.

The 2027 numbers, from shared to plan-specific

Start with what's fixed for everyone. The standard Part B premium is $202.90 per month in 2026 (2026 amount; 2027 figure will be posted when CMS releases it), and Part A is premium-free for most people who paid Medicare taxes long enough while working.

On the drug side, Part D has real guardrails for 2027: a deductible capped at $700 and, a hard $2,400 ceiling on your out-of-pocket costs for covered prescriptions — the old coverage gap is gone.

Higher earners pay more for Parts B and D through an income-related adjustment called IRMAA, which for 2026 starts above $109,000 in annual income for an individual and is based on your 2024 tax return. Most people fall below that line and pay the standard amounts. The 2027 brackets will be posted when CMS releases them.

Everything past that is plan-specific: the premiums, copays, and coverage details of an individual Advantage or Medigap plan change from plan to plan and year to year. Rather than quote or rank those, we point you to Medicare's Plan Finder and a licensed agent for your exact numbers.

When you can enroll or make changes

Medicare's enrollment windows are federal — the same nationwide — so the timing below applies wherever you live.

Your first window (IEP). When you're new to Medicare, your Initial Enrollment Period is the 7-month window around your 65th birthday month. Signing up on time helps you avoid late penalties that can follow you for years.

Annual Enrollment Period (AEP, also called Open Enrollment). Each fall, from October 15 – December 7, anyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan. Changes take effect January 1.

Medicare Advantage Open Enrollment. From January 1 – March 31, if you're already in an Advantage plan you get one chance to switch plans or return to Original Medicare.

Special Enrollment Periods can also open after certain life events, like moving or losing other coverage. The interactive calendar further down lays the year out visually.

Getting unbiased help in Oregon

You never have to make these decisions alone, and you don't have to pay for good help. A few free, trustworthy starting points:

Medicare.gov and 1-800-MEDICARE (TTY 1-877-486-2048) are the official sources for plan details and the Plan Finder. Licensed agents can also compare options with you and handle enrollment.

And to be clear about who we are: MyMedicarePlans.org is a privately owned, independent educational resource. We are not Medicare, not a government agency, and not affiliated with one. We publish plain-language information to help you get oriented — then point you to the official sources and licensed professionals for decisions about specific plans.

Oregon cities

Pick your city for the county-level picture, the companies active in your area, and local guides: