How to Switch Medicare Plans 2026 — Complete Guide
How do you switch Medicare plans in 2026? Whether you want to change your Medicare Advantage plan, switch from Medicare Advantage to Original Medicare, change your Part D drug plan, or make any other Medicare coverage change this complete step-by-step guide walks you through exactly how to switch Medicare plans in 2026. Switching Medicare plans is simpler than most people think — but knowing the right process, the right timing, and the right precautions makes all the difference between a smooth transition and a costly mistake. In this complete guide we explain exactly how to switch Medicare plans in 2026 — when you can switch, how to switch each type of plan, what to watch out for, and what happens after you switch. All information is sourced from Medicare.gov and CMS.gov.
Also Read —Medicare Advantage vs Medigap — Which is Better in 2026?
What You Will Learn — How to Switch Medicare Plans 2026
- When can you switch Medicare plans in 2026
- How to switch Medicare Advantage plans step by step
- How to switch from Medicare Advantage to Original Medicare
- How to switch from Original Medicare to Medicare Advantage
- How to switch Medicare Part D drug plans
- What happens to your coverage when you switch Medicare plans
- Important warnings before switching Medicare plans
- What to do after switching Medicare plans
- Frequently asked questions about switching Medicare plans 2026
When Can You Switch Medicare Plans in 2026?
Before learning how to switch Medicare plans in 2026 you need to know when you can switch. Medicare plan switching is not available at any time — there are specific enrollment windows that determine when you can make changes.
Annual Election Period — Main Switching Window
The primary window for switching Medicare plans is the Annual Election Period (AEP) — Medicare Open Enrollment — which runs from October 15 to December 7 every year. During this window all Medicare beneficiaries can:
- Switch from Original Medicare to Medicare Advantage
- Switch from Medicare Advantage to Original Medicare
- Switch from one Medicare Advantage plan to a different one
- Switch from one Part D drug plan to a different one
- Add a Part D drug plan for the first time
- Drop a Part D drug plan
All changes made during the Annual Election Period take effect January 1 of the following year.
Medicare Advantage Open Enrollment Period — January through March
A second switching window — the Medicare Advantage Open Enrollment Period — runs from January 1 to March 31 every year. During this period Medicare Advantage enrollees can:
- Switch from one Medicare Advantage plan to a different Medicare Advantage plan
- Switch from Medicare Advantage back to Original Medicare and add a Part D plan
You cannot switch from Original Medicare to Medicare Advantage during the January through March period — only during the October to December Annual Election Period.
Special Enrollment Periods
Outside of these standard windows you can only switch Medicare plans if you qualify for a Special Enrollment Period (SEP). Qualifying events include:
- Moving out of your plan’s service area
- Losing employer health coverage
- Qualifying for or losing Medicaid
- Your Medicare plan losing its Medicare contract
- Moving into or out of a nursing home
- Experiencing other qualifying life events
5-Star Special Enrollment Period
If a Medicare Advantage or Part D plan in your area earns a 5-star quality rating from Medicare you can switch to that 5-star plan at any time of year — once per calendar year outside of standard enrollment periods. This is called the 5-Star Special Enrollment Period.
How to Switch Medicare Advantage Plans — Step by Step
Switching from one Medicare Advantage plan to a different Medicare Advantage plan is the most common Medicare plan switch. Here is the complete step-by-step process:
Step 1 — Confirm You Are in an Enrollment Window
First confirm that you are in a qualifying enrollment window:
- Annual Election Period October 15 to December 7
- Medicare Advantage Open Enrollment Period January 1 to March 31
- A qualifying Special Enrollment Period
If you are not in an enrollment window you must wait until the next available window.
Step 2 — Research and Compare New Plans
Before switching research and compare available Medicare Advantage plans in your area:
- Go to Medicare.gov/plan-compare and enter your zip code
- Filter by 4 and 5 star ratings for quality plans
- Enter your medications to compare drug costs
- Verify your doctors are in the new plan’s network
- Compare total annual costs — premiums plus copays plus drug costs
- Compare extra benefits — dental, vision, hearing, OTC allowances
Step 3 — Select Your New Plan
Choose the Medicare Advantage plan that best fits your healthcare needs and budget. Consider:
- Monthly premium
- Out-of-pocket maximum
- Doctor and hospital network
- Drug formulary and costs
- Extra benefits quality
- Star rating
Step 4 — Enroll in Your New Plan
Enroll in your new Medicare Advantage plan through one of these methods:
Online enrollment:
- Go to Medicare.gov/plan-compare
- Select your new plan and click Enroll
- Follow the online enrollment steps
- Save your confirmation number
Phone enrollment:
- Call the new plan directly — number is on their website and Medicare.gov
- Tell them you want to enroll in their Medicare Advantage plan
- Provide your Medicare number and personal information
- Get a confirmation number
Through a licensed Medicare insurance agent:
- A licensed agent can complete enrollment on your behalf at no cost to you
- The agent is paid by the insurance company — not by you
Step 5 — Do Not Cancel Your Old Plan
You do not need to cancel your old Medicare Advantage plan — enrolling in a new plan automatically disenrolls you from your old plan. Never cancel your old plan before your new plan is confirmed active as this could leave you with a gap in coverage.
Step 6 — Confirm Your Enrollment
After enrolling confirm your enrollment is complete:
- You should receive a confirmation from your new plan within a few days
- Check Medicare.gov to verify your new plan is showing as your current coverage
- Watch for your new plan card in the mail
How to Switch from Medicare Advantage to Original Medicare
Switching from Medicare Advantage back to Original Medicare is a significant decision that requires careful consideration. Here is the complete process:
When You Can Switch Back
You can switch from Medicare Advantage to Original Medicare during:
- Annual Election Period October 15 to December 7 — effective January 1
- Medicare Advantage Open Enrollment Period January 1 to March 31 — effective the first of the next month
- A qualifying Special Enrollment Period
The Critical Medigap Warning
Before switching from Medicare Advantage to Original Medicare you must understand the Medigap warning — this is the most important consideration when making this switch.
When you switch to Original Medicare you no longer have the out-of-pocket maximum protection that Medicare Advantage provides. Original Medicare alone has no annual out-of-pocket cap — meaning a serious illness could cost you tens of thousands of dollars.
To protect yourself you should add a Medigap supplement plan when switching to Original Medicare. However in most states Medigap companies can use medical underwriting after your initial 6-month Medigap Open Enrollment Period — meaning they can deny you coverage or charge you more based on your health conditions.
If you are not in New York, Massachusetts, or Connecticut — states with year-round Medigap guaranteed issue — you may face challenges getting Medigap coverage when switching back to Original Medicare after age 65. Before switching from Medicare Advantage to Original Medicare consult with a SHIP counselor or licensed Medicare agent about your Medigap options in your state.
Step-by-Step Process to Switch to Original Medicare
Step 1 — Decide whether you want to add Medigap and research your options in your state before switching
Step 2 — During the Annual Election Period or Medicare Advantage OEP contact your Medicare Advantage plan and request disenrollment
Or alternatively — simply enroll in a Part D drug plan during the Annual Election Period and Medicare will automatically process your return to Original Medicare
Step 3 — Contact a Medigap insurer to apply for Medigap coverage — be prepared for possible medical underwriting in most states
Step 4 — Enroll in a standalone Part D drug plan for prescription drug coverage
Step 5 — Confirm your Original Medicare is active on January 1
How to Switch from Original Medicare to Medicare Advantage
Switching from Original Medicare to Medicare Advantage for the first time or after a period on Original Medicare is straightforward. Here is the process:
When You Can Switch
You can switch from Original Medicare to Medicare Advantage only during:
- Annual Election Period October 15 to December 7 — effective January 1
- Your Initial Enrollment Period when you first become eligible for Medicare
- A qualifying Special Enrollment Period
You cannot switch from Original Medicare to Medicare Advantage during the January through March Medicare Advantage Open Enrollment Period.
Before You Switch
Before switching to Medicare Advantage consider:
- Confirm your doctors are in the plan’s network — once you switch to Medicare Advantage you must use in-network providers for lowest costs
- Confirm your medications are on the plan’s formulary
- Understand that you are giving up the freedom to see any Medicare-accepting provider nationwide
- If you have Medigap you should cancel it when you switch to Medicare Advantage — you cannot use Medigap to pay costs under a Medicare Advantage plan
Step-by-Step Process
Step 1 — Research and compare available Medicare Advantage plans in your area using Medicare.gov Plan Finder
Step 2 — Verify your doctors and drugs are covered
Step 3 — Enroll in your chosen Medicare Advantage plan during the Annual Election Period — online, by phone, or through a licensed agent
Step 4 — Cancel your Medigap supplement plan if you have one — effective when your Medicare Advantage plan begins January 1
Step 5 — Your standalone Part D plan is automatically replaced by your Medicare Advantage plan’s drug coverage if your new plan includes drug coverage
How to Switch Medicare Part D Drug Plans
Switching Medicare Part D drug plans is often the most financially impactful change you can make during Open Enrollment. Drug formularies change every year and the best Part D plan for your medications may change annually. Here is how to switch:
When You Can Switch Part D Plans
You can switch Part D plans during:
- Annual Election Period October 15 to December 7 — effective January 1
- Initial Enrollment Period for new Medicare beneficiaries
- A qualifying Special Enrollment Period
Step-by-Step Process to Switch Part D Plans
Step 1 — Enter your current medications in Medicare.gov Plan Finder and compare all available Part D plans in your area based on your specific drugs
Step 2 — Look for the plan with the lowest total annual drug cost — not just the lowest premium. The Plan Finder calculates your estimated annual drug cost for each plan.
Step 3 — Check preferred pharmacy network — using preferred pharmacies saves money. Check whether your current pharmacy is preferred by the new plan.
Step 4 — Confirm your medications are on the new plan’s formulary before enrolling
Step 5 — Enroll in the new Part D plan during the Annual Election Period — online at Medicare.gov or by calling the plan directly
Step 6 — You do not need to cancel your old Part D plan — enrolling in a new plan automatically terminates your old one
Step 7 — Notify your pharmacy of your new Part D plan information
What Happens to Your Coverage When You Switch Medicare Plans
Understanding what happens during the transition when you switch Medicare plans helps you avoid coverage gaps.
Effective Date of New Coverage
Changes made during the Annual Election Period take effect January 1 of the following year. This means:
- Your old plan provides coverage through December 31
- Your new plan provides coverage starting January 1
- There is no gap in coverage
Changes made during the Medicare Advantage Open Enrollment Period take effect the first day of the month following your enrollment.
Using Healthcare During the Transition
If you have healthcare appointments or prescriptions to fill during December while your new plan is selected but not yet active:
- Use your current plan card through December 31
- Start using your new plan card January 1
- Do not try to use your new plan before January 1
Prescription Drug Continuity
When you switch Part D plans or Medicare Advantage plans your new plan’s formulary applies starting January 1. If any of your medications are not on your new plan’s formulary you have transition fill rights — your new plan must cover a temporary supply of your medication for up to 90 days while you work with your doctor to find a formulary alternative or request a coverage exception.
Important Warnings Before Switching Medicare Plans
Before switching Medicare plans consider these important warnings:
Warning 1 — Medigap Underwriting After Leaving Medicare Advantage
In most states if you leave Medicare Advantage and want to add Medigap you will face medical underwriting. You could be denied coverage or charged significantly more based on health conditions. Exceptions — New York, Massachusetts, and Connecticut have year-round guaranteed issue.
Warning 2 — Network Changes
When switching Medicare Advantage plans confirm your doctors are in the new plan’s network. Do not assume your current doctors will be covered — networks vary significantly between plans.
Warning 3 — Drug Formulary Changes
When switching plans confirm all your medications are on the new plan’s formulary before enrolling. If a critical medication is not covered the financial impact could far outweigh any premium savings.
Warning 4 — Do Not Cancel Your Old Plan Early
Never cancel your old Medicare plan before your new plan is confirmed. Enrolling in a new plan automatically terminates the old one — there is no need to cancel separately.
Warning 5 — Confirm Your Enrollment
After switching plans confirm your enrollment through Medicare.gov or by calling Medicare at 1-800-633-4227. Enrollment errors can happen — verify your new plan is active before January 1.
What to Do After Switching Medicare Plans
After switching Medicare plans take these important steps:
Notify Your Doctors Contact all your doctors and notify them of your new Medicare plan. Verify they accept your new plan before January 1. Update your information at each doctor’s office.
Update Your Pharmacy Notify your pharmacy of your new Part D plan or Medicare Advantage plan with drug coverage. Provide your new plan card information before filling prescriptions on January 1.
Review Your New Summary of Benefits When your new plan materials arrive review the Summary of Benefits — confirm premiums, deductibles, copays, and drug coverage match your expectations.
Watch for Your New Plan Card New Medicare Advantage and Part D plan cards should arrive in late December. Keep your old card active through December 31 and start using your new card January 1.
Save Your Confirmation Numbers Keep your enrollment confirmation numbers in a safe place until your new plan is fully active and your first claim has been processed.
Frequently Asked Questions — How to Switch Medicare Plans 2026
How do I switch Medicare plans in 2026?
To switch Medicare plans in 2026 during the Annual Election Period (October 15 to December 7) go to Medicare.gov/plan-compare, enter your zip code, compare available plans, and enroll in your new plan online. You can also call Medicare at 1-800-633-4227 or contact the plan directly. All changes take effect January 1, 2027. You do not need to cancel your old plan — enrolling in a new plan automatically disenrolls you from the old one.
When can I switch Medicare plans in 2026?
The main window for switching Medicare plans is the Annual Election Period from October 15 to December 7, 2026. You can also make limited changes during the Medicare Advantage Open Enrollment Period from January 1 to March 31, 2027. Outside of these windows changes are only available through qualifying Special Enrollment Periods.
Can I switch from Medicare Advantage to Original Medicare?
Yes — you can switch from Medicare Advantage to Original Medicare during the Annual Election Period or Medicare Advantage Open Enrollment Period. Before switching be aware that adding Medigap after switching may require medical underwriting in most states — potentially resulting in denial of coverage based on health conditions. Exceptions apply in New York, Massachusetts, and Connecticut.
Do I need to cancel my old Medicare plan when switching?
No — you do not need to cancel your old Medicare plan. When you enroll in a new Medicare Advantage or Part D plan your old plan is automatically terminated. Never cancel your old plan before your new plan is confirmed active as this could create a coverage gap.
How long does it take for a Medicare plan switch to take effect?
Plan changes made during the Annual Election Period take effect January 1. You will receive confirmation from your new plan within days of enrolling. Your new plan card arrives in late December. Your new coverage begins January 1 — use your old plan card through December 31 and your new card starting January 1.
Can I switch Medicare plans if I am sick?
Yes — you can switch Medicare plans during an enrollment window regardless of your health status. However if you are switching from Medicare Advantage to Original Medicare and want to add Medigap your health status may affect your ability to get Medigap coverage in most states due to medical underwriting. States with year-round Medigap guaranteed issue — New York, Massachusetts, Connecticut — do not have this limitation.
Summary — How to Switch Medicare Plans 2026
Switching Medicare plans in 2026 is straightforward when you follow the right process. The main switching window is the Annual Election Period from October 15 to December 7 — use Medicare.gov Plan Finder to compare plans, verify your doctors and drugs are covered, enroll in your new plan before December 7, and your new coverage begins January 1, 2027.
The most important warnings when switching: confirm your doctors and drugs are covered in your new plan, understand the Medigap underwriting risk before switching from Medicare Advantage to Original Medicare, and never cancel your old plan separately — enrolling in a new plan automatically terminates the old one.
For free help switching Medicare plans contact your State Health Insurance Assistance Program (SHIP) at shiphelp.org or call Medicare free at 1-800-633-4227.
This guide is for informational purposes only and is not medical or financial advice. Always verify current Medicare plan details at Medicare.gov before making enrollment decisions.
Sources: Medicare.gov | CMS.gov | SSA.gov | AARP.org
Last updated: April 2026 | Author: James Carter, Independent Medicare Research Analyst
