Switching from Medicare Advantage back to Original Medicare is more straightforward than many people expect, but timing matters. Missing the right enrollment window can lock you into your current plan for another year. In 2026, you have two main annual opportunities to make this switch, plus certain special situations that allow changes at any time. This guide covers every enrollment window, the exact steps to disenroll, and what you need to think about regarding drug coverage and Medigap supplemental insurance.
When You Can Switch: The 2026 Enrollment Windows
Medicare has two main annual periods when you can move from Medicare Advantage to Original Medicare.
Medicare Advantage Open Enrollment Period (January 1 to March 31)
This window exists specifically for people already enrolled in a Medicare Advantage plan. Between January 1 and March 31, 2026, you can make one coverage change: either switch to a different Medicare Advantage plan, or drop your Advantage plan and return to Original Medicare. You can also add a standalone Part D prescription drug plan during this window.
Changes made during this period take effect on the first day of the month after you submit your request.
Annual Enrollment Period (October 15 to December 7)
This is the main Medicare open enrollment window each year. During this period, anyone on Medicare can switch between Original Medicare and Medicare Advantage, change Medicare Advantage plans, or add, drop, or switch Part D drug plans. Changes made during this window take effect on January 1 of the following year.
For 2027 coverage, the Annual Enrollment Period runs October 15 to December 7, 2026.
Special Enrollment Periods
Outside of these two annual windows, you may qualify for a Special Enrollment Period (SEP) if you experience a qualifying life event. Common qualifying events include:
- Moving outside your Medicare Advantage plan's service area
- Your Medicare Advantage plan leaving your area or reducing its service area
- Losing eligibility for Medicaid or Extra Help (Low Income Subsidy)
- Moving into or out of a nursing facility or other care setting
- Your plan being found to provide inaccurate provider directory information
In 2026, an estimated 2.9 million Medicare Advantage enrollees are being forced to switch plans because their insurers have exited certain markets. If your plan terminates coverage, you automatically qualify for a Special Enrollment Period to move to Original Medicare or a new Advantage plan.
Step-by-Step: How to Switch from Medicare Advantage to Original Medicare
Step 1: Confirm Your Enrollment Window
Before taking any action, confirm you are within one of the eligible enrollment periods listed above. If you are outside an enrollment window and do not have a qualifying SEP event, you will need to wait until the next available period.
Step 2: Choose and Enroll in a Part D Drug Plan
Original Medicare does not include prescription drug coverage. When you leave a Medicare Advantage plan, which typically bundles drug coverage, you need to separately enroll in a Medicare Part D standalone prescription drug plan.
In 2026, Part D plans have several important features:
| Part D Feature | 2026 Amount |
|---|
| Annual out-of-pocket cap | $2,100 |
| Standard deductible (max) | $615 |
| Cost after cap | $0 for covered drugs |
| Standalone plan options per state | 8 to 12 plans |
The coverage gap ("donut hole") no longer exists in 2026. Once you reach the $2,100 out-of-pocket cap, you pay nothing for covered prescription drugs for the rest of the year.
Use the Medicare Plan Finder at medicare.gov to compare Part D plans in your area by cost and which drugs they cover.
Step 3: Disenroll from Your Medicare Advantage Plan
You have three ways to formally disenroll from a Medicare Advantage plan:
Option A: Call 1-800-MEDICARE (1-800-633-4227)
This is the simplest approach for most people. Tell the representative you want to disenroll from your Medicare Advantage plan and return to Original Medicare. They will process the request and confirm your effective date.
Option B: Contact Your Medicare Advantage Plan Directly
Call the member services number on your insurance card and request disenrollment. Ask for written confirmation. The plan must process your request within the enrollment window.
Option C: Use the Medicare Plan Finder Online
Go to medicare.gov/plan-compare and log in. You can enroll in a Part D standalone plan through the Plan Finder tool, which automatically triggers your Medicare Advantage disenrollment.
Option D: Contact Your State SHIP
Each state has a State Health Insurance Assistance Program (SHIP) that provides free, unbiased Medicare counseling. A SHIP counselor can walk you through the disenrollment process at no cost. Find your local SHIP at shiphelp.org.
Step 4: Confirm Your Original Medicare Coverage
After disenrolling, your Original Medicare coverage (Part A and Part B) reactivates. You should receive confirmation from Medicare and from your previous Advantage insurer. Keep records of any written confirmation.
Original Medicare covers:
- Part A: Hospital stays, skilled nursing care, hospice
- Part B: Doctor visits, outpatient care, preventive services, durable medical equipment
With Original Medicare, you can generally see any doctor or specialist in the United States who accepts Medicare, without needing referrals. This is a significant difference from most Medicare Advantage plans, which typically require you to use a network of providers.
Step 5: Consider a Medigap Supplemental Insurance Policy
Original Medicare has cost-sharing requirements that can add up quickly. Part A has a $1,676 per-benefit-period hospital deductible in 2026, and Part B has a 20% coinsurance with no annual out-of-pocket cap. Many people returning to Original Medicare choose to purchase a Medigap (Medicare Supplement) policy to cover these costs.
Important: Medigap and Medical Underwriting
In most states, Medigap insurers can charge you more or deny coverage based on your health status if you are not in a guaranteed-issue window. The exceptions are:
Federal Trial Right (12-Month Trial Period)
If you joined Medicare Advantage for the first time when you turned 65 and you are switching back to Original Medicare within the first 12 months of that enrollment, you have a federal right to purchase any Medigap policy sold in your state without medical underwriting. Insurers cannot deny you coverage or charge you higher rates based on health conditions.
Plan Termination Rights
If your Medicare Advantage plan terminates coverage or leaves your area, you have a guaranteed right to purchase certain Medigap policies. You generally have 63 days from the end of your plan coverage to exercise this right.
State-Specific Protections in 2026
Several states offer additional Medigap guaranteed-issue protections:
| State | Protection |
|---|
| Minnesota | One-time right for ages 65-70 to switch to Medigap without underwriting (effective August 1, 2026) |
| West Virginia | 60-day birthday month window after 2+ years on same Medigap plan |
| California, Oregon, and others | Annual birthday rule allowing plan changes with no underwriting |
If you are outside a guaranteed-issue window, Medigap insurers in most states can review your health history and either deny coverage or charge higher premiums.
Comparing Original Medicare vs. Medicare Advantage
| Feature | Original Medicare | Medicare Advantage |
|---|
| Provider network | Any Medicare-accepting doctor nationwide | Usually limited to plan network |
| Referrals needed | No | Often yes (HMO plans) |
| Prescription drugs | Separate Part D plan required | Usually bundled |
| Extra benefits (dental, vision) | Not covered | Often included |
| Monthly premium | Part B premium ($185/month in 2026) | Often $0 premium, but varies |
| Out-of-pocket cap | No cap (Medigap can cover gaps) | Annual cap required by law |
| Predictability of costs | Lower with Medigap | Can vary more |
What Happens to Your Medicare Advantage Dental, Vision, and Hearing Benefits
Medicare Advantage plans often bundle dental, vision, and hearing coverage. Original Medicare does not cover routine dental or vision care. When you switch back to Original Medicare, you lose these extra benefits unless you purchase standalone dental or vision insurance separately. Factor this into your decision.
Medicare Savings Programs: Extra Help with Costs
If you have limited income, you may qualify for Medicare Savings Programs that help pay Part B premiums, deductibles, and cost-sharing under Original Medicare. There are four tiers based on income:
| Program | 2026 Approximate Income Limit (Individual) | What It Covers |
|---|
| Qualified Medicare Beneficiary (QMB) | Up to $1,235/month | Part A and B premiums, deductibles, coinsurance |
| Specified Low-Income Medicare Beneficiary (SLMB) | Up to $1,478/month | Part B premium only |
| Qualifying Individual (QI) | Up to $1,660/month | Part B premium only |
| Qualified Disabled Working Individual (QDWI) | Up to $4,615/month | Part A premium only |
Income limits are approximate and vary by state. Asset limits also apply. Contact your state Medicaid office or use the Benefits Navigator screener at benefitsusa.org/screener to check your eligibility for Medicare Savings Programs.
Frequently Asked Questions
Can I switch from Medicare Advantage to Original Medicare at any time?
No. You can switch during the Medicare Advantage Open Enrollment Period (January 1 to March 31) or the Annual Enrollment Period (October 15 to December 7). Outside these windows, you need a qualifying Special Enrollment Period event, such as your plan terminating coverage or moving outside your plan's service area.
Will I automatically get Original Medicare when I leave my Advantage plan?
Yes. Original Medicare (Part A and Part B) stays active even when you enroll in a Medicare Advantage plan. When you disenroll from your Advantage plan, your Original Medicare coverage simply becomes your primary coverage again. You do not need to re-enroll in Part A or Part B.
Do I need to get a Part D drug plan when switching back to Original Medicare?
You are not required to enroll in Part D, but most people should. Original Medicare does not cover outpatient prescription drugs. If you skip Part D and later want to join, you may face a late enrollment penalty: 1% of the national base beneficiary premium for every month you went without creditable drug coverage. That penalty stays with you for as long as you have Part D.
Can I get Medigap after switching from Medicare Advantage?
In most states, Medigap insurers can use medical underwriting if you are outside a guaranteed-issue window. However, if you are within your first 12 months of Medicare Advantage enrollment (the federal trial period), your plan is terminating, or you live in a state with expanded birthday rule protections, you may have guaranteed rights to buy Medigap without underwriting. Contact a SHIP counselor or a licensed broker to understand your specific situation.
How long does it take for the switch to take effect?
During the Medicare Advantage Open Enrollment Period (January 1 to March 31), changes take effect on the first day of the month after you submit your disenrollment request. During the Annual Enrollment Period (October 15 to December 7), changes take effect January 1 of the following year.
What if I have both Medicare and Medicaid?
If you have both Medicare and Medicaid (dual eligibility), you have expanded rights to change plans. Dual-eligible beneficiaries can switch to Original Medicare or a different plan at any time, with changes taking effect the first day of the following month. Contact your state Medicaid office for guidance specific to your situation.
Is there a cost to switch plans?
There is no fee to switch between Medicare coverage options during an enrollment period. However, you should budget for new plan premiums, the Part B premium ($185/month in 2026), and any Medigap or Part D premiums that apply to your new coverage.
What if I am not happy with Original Medicare after switching?
During the Annual Enrollment Period (October 15 to December 7), you can switch back to a Medicare Advantage plan. There is no penalty for changing your mind. Many people also test Original Medicare during the MA Open Enrollment Period and can return to an Advantage plan by the end of that same window (March 31).
Use the free Benefits Navigator screener at benefitsusa.org/screener to check whether you qualify for Medicare Savings Programs that can reduce your out-of-pocket costs under Original Medicare.
