Written By

Greg Wohl

Licensed Medicare Specialist

Medicare Advantage plans change every year, and your needs change too. A plan that worked well in prior years may have higher costs, a narrower network, or fewer benefits in 2026.

The good news is that Medicare gives you several opportunities each year to switch plans. The key is knowing which window applies to your situation and acting before the deadline.

This guide covers every enrollment period that allows you to switch Medicare Advantage plans in Florida, what to look for when comparing plans, and how to make the switch without creating a coverage gap.

Key Takeaways

The Annual Enrollment Period (AEP) is your main switching window: AEP runs from October 15 through December 7 each year. During this period, you can switch from one Medicare Advantage plan to another, switch from Medicare Advantage to Original Medicare, or change your Part D drug plan. Changes take effect January 1.
The Medicare Advantage Open Enrollment Period allows one switch: From January 1 through March 31, you can make one plan change: switch from one Medicare Advantage plan to another, or switch from Medicare Advantage back to Original Medicare. You cannot switch from Original Medicare to Medicare Advantage during this period.
Special Enrollment Periods allow switching outside normal windows: Certain qualifying events trigger a Special Enrollment Period (SEP) that lets you switch plans outside of AEP or OEP. Common triggers include moving to a new service area, losing qualifying coverage, and qualifying for Extra Help.
Switching back to Original Medicare may affect Medigap eligibility: If you switch from Medicare Advantage back to Original Medicare, you may face medical underwriting to get a Medigap supplement in Florida. The exception is if you have a guaranteed issue right, such as your plan leaving your area.
Verify your doctors and drugs before switching: Before switching, confirm that your doctors are in the new plan's network and that your medications are on the new plan's formulary at an acceptable tier. A plan with a lower premium may cost more overall if your drugs are on a higher tier.
You do not need to cancel your old plan before enrolling in a new one: When you enroll in a new Medicare Advantage plan, your old plan is automatically disenrolled when your new coverage takes effect. You do not need to call your old plan to cancel.

Annual Enrollment Period (AEP): October 15 to December 7

The Annual Enrollment Period is the primary window for making Medicare plan changes. During AEP, you can switch from one Medicare Advantage plan to another, switch back to Original Medicare, add or drop a Part D drug plan, or move from Original Medicare to Medicare Advantage.

Changes made during AEP take effect January 1 of the following year. If you make multiple changes during AEP, only the last change you make takes effect.

Why AEP matters for Florida beneficiaries: Florida has one of the most competitive Medicare Advantage markets in the country, with dozens of plans available in most counties. Plans change significantly from year to year, so even a quick comparison during AEP can reveal better options.

For a full breakdown of what changed in 2026, see our guide to Medicare Advantage changes for 2026.

Medicare Advantage Open Enrollment Period (OEP): January 1 to March 31

The Medicare Advantage Open Enrollment Period (MA OEP) runs from January 1 through March 31 each year. During this period, you can make one plan change: switch from one Medicare Advantage plan to another, or switch from Medicare Advantage to Original Medicare and add a standalone Part D plan.

Important limitations to know:

You can only make one change during OEP. If you switch in January and want to switch again in February, you cannot.
You cannot switch from Original Medicare to Medicare Advantage during OEP. That switch is only available during AEP or with a qualifying SEP.
Changes made during OEP take effect the first day of the month following your enrollment.

OEP is useful if you enrolled in a new plan during AEP and then discovered it does not work for you. It gives you a second chance to correct the decision before being locked in for the full year.

Special Enrollment Periods (SEPs): Switching Outside Normal Windows

Special Enrollment Periods allow you to switch plans outside of AEP and OEP when a qualifying event occurs. SEP windows vary in length but most are 2 to 3 months, so act promptly when a qualifying event happens.

Plan-related SEPs:

Your plan leaves your service area: If your Medicare Advantage plan discontinues coverage in your county, you have a SEP to enroll in a new plan.
Your plan loses its Medicare contract: If your plan's contract with Medicare is terminated, you have a SEP.
Your plan is sanctioned by CMS: If CMS sanctions your plan for poor performance, you may have a SEP to switch.

Personal circumstance SEPs:

Moving to a new service area: If you move to a new county or state where your current plan is not available, you have a SEP to enroll in a plan available in your new area.
Qualifying for Extra Help (LIS): If you newly qualify for the Extra Help low-income subsidy, you have a SEP to switch to a plan that better fits your needs.
Losing other coverage: If you lose employer coverage, Medicaid, or other qualifying coverage, you may have a SEP.
Moving into or out of a nursing facility: Residents of long-term care facilities have special enrollment rights.

How to Compare Medicare Advantage Plans Before Switching

Before you switch, take time to compare plans carefully. A lower premium does not always mean lower total costs.

Step 1: List your priorities

Your current doctors and specialists (do they accept the new plan?)
Your prescription medications (are they on the formulary at an acceptable tier?)
Your preferred hospitals and facilities
Extra benefits you use (dental, vision, OTC allowance, fitness)

Step 2: Use Medicare Plan Finder. Go to medicare.gov/plan-compare and enter your zip code and drug list. The tool shows all plans available in your area with estimated annual costs based on your specific medications.

Step 3: Check the out-of-pocket maximum. A plan with a $0 premium but an $8,500 OOP maximum may cost far more than a plan with a $45 premium and a $3,500 OOP maximum if you have significant health needs.

Step 4: Verify your providers. Do not rely solely on the plan's online directory. Call your doctors' offices directly and confirm they are accepting the specific plan you are considering for the upcoming year.

For a current overview of the best-rated plans in Florida, see our guide to the best Medicare Advantage plans in Florida.

Switching Back to Original Medicare: What to Know About Medigap

If you decide to switch from Medicare Advantage back to Original Medicare, you will have Parts A and B coverage but no supplemental coverage for cost-sharing. Most people who return to Original Medicare also want a Medigap supplement plan.

The Medigap challenge: In Florida, Medigap insurers can use medical underwriting outside of your guaranteed issue rights. This means they can charge higher premiums or deny coverage based on your health history.

When you have guaranteed issue rights for Medigap:

Your Medicare Advantage plan is leaving your service area or losing its Medicare contract
You are within your first 12 months of Medicare Advantage enrollment (trial right)
You are newly eligible for Medicare (first 6 months of Part B)

If you do not have guaranteed issue rights: You may still be able to get Medigap, but you may be subject to medical underwriting. Apply to multiple insurers to compare offers, as some conditions rated high-risk by one insurer may be rated differently by another.

Our advisors can help you understand your Medigap options when switching back to Original Medicare. Schedule a free consultation before making this decision.

How to Switch Your Medicare Advantage Plan: Quick Reference

Here is a summary of your switching options:

Annual Enrollment Period (Oct 15 to Dec 7): Switch to any plan, including back to Original Medicare; changes effective January 1
Medicare Advantage OEP (Jan 1 to Mar 31): One switch allowed; can move to another MA plan or back to Original Medicare
Special Enrollment Period: Triggered by qualifying events such as moving, plan exit, or losing other coverage
Before switching: Verify your doctors are in-network, your drugs are on the formulary, and compare out-of-pocket maximums
Switching back to Original Medicare: Understand your Medigap guaranteed issue rights before making the move

Our licensed specialists can run a full plan comparison for your specific doctors, drugs, and health needs. Schedule a free consultation before your next enrollment period.