Your Medicare Options Through March 31
If your Medicare Advantage plan for 2026 isn’t working the way you expected, you may still have options.
Many people assume that once Annual Enrollment ends in December, their coverage is locked in for the entire year. However, Medicare includes another opportunity that many beneficiaries don’t realize exists: the Medicare Advantage Open Enrollment Period (OEPI).
Here’s what this period allows, when i makes sense to consider a change, and what signs to watch for if your current plan isn’t the right fit.
What is the Medicare Advantage Open Enrollment Period?
The Medicare Advantage Open Enrollment Period runs from January 1 through March 31 (Medicare.gov, 2026).
- Switch to a different Medicare Advantage plan
- Return to Original Medicare
- Add a Part D prescriptions drug plan if you return to Original Medicare
Important: Only one plan change is allowed during OEPI, and the new coverage generally beings the first day of the following month (CMS, 2026).
When Switching Might Make Sense
For many people, the first few months of the year reveal how their coverage works in real life. Doctor visits, prescription fills, and early claims often highlight differences between what was expected and what the plan actually covers.
According to the Kaiser Family Foundation, plan cost-sharing structures, provider networks, and drug coverage vary widely across Medicare Advantage plans, which is why early-year reviews can be important (KFF, 2025).
Here are some signs it may be worth taking a closer look:
1. Unexpected Costs
While deductibles resetting in January is normal, consistently higher copays, coinsurance, or out-of-pocket costs than anticipated may indicate that the plan’s cost structure doesn’t align with your healthcare usage.
Medicare Advantage plans differ signIficantly in out-of-pocket maximums and service cost-sharing, which can impact overall spending (KFF, 2025).
2. Your Doctor Isn’t In-Network
Provider networks change each year as contracts are updated. If you discover that:
- Your primary care physician is no longer in-network
- A specialist you rely on isn’t covered
- You’re required to switch medical groups or facilities
…It may affect both your costs and access to care. Network participation is a key factor in Medicare Advantage plan design (Medicare.gov, 2026).
3. Medicare Issues
Prescription drug coverage changes annually. Common issues include:
- Medications moving to higher cost tiers
- New prior authorization or step therapy requirements
- Drugs no longer covered
- Changes to preferred pharmacies
CMS notes that Part D formularies and utilization management requirements may change each year, even for a long-term medications (CMS, 2026).
What You Can’t Do During OEPI
The January-March period is more limited than the fall Annual Enrollment Period. During OEPI, you cannot:
- Switch from Original Medicare to a Medicare Advantage Plan
- Make multiple plan changes
- Enroll in Part D unless you are leaving a Medicare Advantage Plan
Why Acting Early Matters
If your current plan isn’t meeting your needs, addressing it sooner can help you:
- Reduce out-of-pocket costs for the remainder of the year
- Restore access to preferred providers
- Ensure medications are covered appropriately
- Avoid ongoing authorization or network issues
Once OEPI ends on March 31, most beneficiaries must wait until the fall Annual Enrollment Period unless they qualify for a Special Enrollment Period (Medicare.gov, 2026).
How Harbor Health Can Help
Choosing a plan during OEPI isn’t about starting over, it’s about making sure your coverage matches your real-life healthcare needs. We help you:
- Review the concerns you’re experiencing
- Compare available plans in your area
- Confirm provider networks and drug coverage
- Understand how a change would affect your costs and benefits
Because you’re allowed only one change, having a clear comparison before switching is key.
References:
Centers for Medicare & Medicaid Services (CMS). (2026). Medicare Advantage and Part D Enrollment and Plan Guidance.
Kaiser Family Foundation (KFF). (2025). Medicare Advantage: Plan Availability, Costs, and Enrollment Trends.
Medicare.gov (2026). Medicare Advantage Open Enrollment Period and Coverage Options.
Medicare Disclaimer: We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.
