Medicare Advantage in Irvine, California: What to Know for 2027

32 Medicare Advantage plans in Orange County are changing for 2027, 21 plans are leaving and 28 plans are new. Use this guide to see how the plans work in Irvine, California and what to compare, in plain terms.

Here's the Irvine picture in plain terms. Your county sets your Medicare options, and Irvine sits in Orange County (part of Irvine area) — so that's the lens for everything below.

111 Medicare Advantage plans are available for 2027. Roughly 56% of people with Medicare in the county have chosen Medicare Advantage over Original Medicare, among the roughly 514,824 residents who are 65 or older. Those are factual, area-level counts — we don't rank plans.

Expect the companies active locally, a jargon-free walkthrough of how Medicare works, the 2027 costs, the enrollment calendar, and free help when you want a person to talk to.

Advantage or Original Medicare? The basic fork

Every Medicare decision in Irvine, California 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.

What Medicare costs in 2027

It helps to separate the costs everyone shares from the costs that vary by plan. The program-level numbers here are set nationally — the same whether you're in a big city or a rural county.

Part B premium. Most people pay the standard Part B premium of $202.90 a month in 2026 (2026 amount; 2027 figure will be posted when CMS releases it). Part A is premium-free for most people who worked and paid Medicare taxes long enough.

Part D drug costs. In 2027, a Part D plan's yearly deductible can be no more than $700, and a $2,400 cap limits what you pay out of pocket for covered prescriptions across the year — a real change for anyone with high drug costs.

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.

Plan-specific costs. What an individual plan charges — its premium, deductible, copays, and what it covers — varies by plan and changes yearly. We don't publish those figures or rank plans; Medicare's Plan Finder shows the current details for your situation, and a licensed agent can walk you through them.

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). 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.

Where to get free, unbiased help near Irvine

Good Medicare help exists and it's free — you don't have to figure this out solo or pay for guidance.

For official specifics and the Plan Finder tool, go straight to Medicare.gov or 1-800-MEDICARE (TTY 1-877-486-2048). And a licensed agent can compare options and handle the paperwork with you.

One note on who we are: MyMedicarePlans.org is an independent, privately owned educational resource — not Medicare, not a government agency, and not affiliated with one. Our job is to help you get oriented, then hand you off to the official sources and licensed professionals for plan decisions.

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