Annual Medicare Plan Review
The Medicare Mistake to Avoid Every January
Keeping the same plan does not guarantee that your doctors, prescriptions, copayments or coverage rules will remain unchanged.
“I Didn’t Change Anything—So Why Does My Plan Feel Different?”
Every January, after the Medicare Annual Enrollment Period has ended and the new plan year begins, I hear some version of the same concern:
“I didn’t change anything, but something about my Medicare coverage is different.”
In many cases, the problem is not that the beneficiary made an active change. The problem is assuming that staying enrolled in the same plan means the plan itself stayed exactly the same.
Medicare Advantage and Part D plans can change from one calendar year to the next. Those changes commonly take effect on January 1—even when you take no action during the fall enrollment period.
❌ The Mistake: Assuming “No Changes” Means Nothing Changed
If you did not actively change plans, your current Medicare Advantage or Part D plan may generally renew into the new year. However, the plan’s benefits, costs, network and coverage rules may still be different.
Your plan may have changed:
- Which doctors, hospitals or pharmacies participate
- How much you pay for medical services
- Which tier your prescription drugs are assigned to
- Whether a medication requires prior authorization or step therapy
- Your medical or prescription deductible
- Your annual maximum out-of-pocket limit
- Referral and prior-authorization requirements
These changes can occur without you submitting a new enrollment application.
Provider Networks Can Shift
Medicare Advantage plans may update their provider networks. A doctor, specialist or hospital that participated last year may not participate this year—or may participate with only certain plans offered by the same insurance company.
Provider directories can also contain outdated information. Before receiving non-emergency care, verify participation using the exact plan name and network, preferably with both the plan and the provider’s office.
Drug Coverage Is Not Set in Stone
Part D formularies are updated for each plan year. A medication may move to a different tier, require prior authorization, receive a quantity limit or no longer be covered in the same way.
Pharmacy networks and preferred-pharmacy arrangements can change too. The same prescription may cost considerably more at one pharmacy than another.
Premiums Do Not Tell the Whole Story
A low or unchanged monthly premium does not mean your total healthcare spending will remain low. Copayments, coinsurance, deductibles and prescription costs matter whenever you use the plan.
Two plans with similar premiums can produce very different costs for specialist visits, outpatient procedures, imaging, hospital care and medications.
Coverage Rules Can Change
A service or medication that was straightforward last year may require prior authorization, a referral or additional documentation this year.
A denial does not always mean the service can never be covered. It may mean that a plan requirement must be completed or that an appeal or coverage determination should be considered.
Why January Is When People Notice
Plans send an Annual Notice of Change before the fall enrollment period, but the changes described in that document usually do not take effect until January 1.
January is therefore when beneficiaries begin encountering the new plan in real life:
- A prescription refill costs more than expected.
- A doctor’s office says it no longer accepts the plan.
- A previously covered service now requires authorization.
- A copayment or deductible is different.
- A plan benefit works differently than it did last year.
This does not automatically mean you chose the wrong plan. It means it is time to identify exactly what changed and determine what options may be available.
✅ What to Check Every January
A short beginning-of-year review can help uncover problems before they become expensive surprises.
Verify Your Providers
Check your primary doctor, specialists, preferred hospitals and other important facilities against the exact plan and network you have this year.
Review Your Medications
Confirm that each prescription remains covered, review its tier and restrictions, and compare costs at your preferred pharmacies.
Compare Your Expected Costs
Review the deductible, medical copayments, prescription costs and maximum out-of-pocket limit—not just the monthly premium.
Can You Change Medicare Plans in January?
Possibly, but the answer depends on the coverage you currently have and whether you qualify for an enrollment period.
The Medicare Advantage Open Enrollment Period runs from January 1 through March 31. During this period, someone already enrolled in a Medicare Advantage plan may generally make one change:
- Switch to another Medicare Advantage plan, or
- Leave Medicare Advantage and return to Original Medicare, with the opportunity to join a separate Part D prescription drug plan.
This period generally cannot be used by someone with Original Medicare to join Medicare Advantage, and it is not a general Part D switching period for people who only have Original Medicare and a standalone drug plan.
Other Special Enrollment Periods may apply because of Medicaid or Extra Help eligibility, a move, loss of qualifying coverage, certain plan problems or another qualifying event.
If you are not yet enrolled in Medicare Parts A and B, different enrollment rules apply. See when you should sign up for Medicare before choosing private coverage.
Helpful Medicare Resources
Need Help Reviewing Your Medicare Advantage Plan?
If your coverage feels different, or you simply want to confirm that your doctors, prescriptions and expected costs still fit your needs, Thompson Medicare Brokerage can help you review the details.
¹Not every carrier or plan represented by Thompson Medicare Brokerage is necessarily included in the primary online comparison system. Clear Spring Health, Molina Healthcare and BCBS Illinois may use separate shopping systems. Thompson Medicare Brokerage does not represent every plan available in every area. Contact Medicare.gov, 1-800-MEDICARE or your State Health Insurance Assistance Program for information about all available options.