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There's Less Than a Week to Make an Important Change to Your Medicare Advantage Coverage

The Medicare Advantage Open Enrollment Period runs January 1 to March 31.

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Updated March 25, 2026
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Many retirees enroll in Medicare Advantage and rarely think about it again, but there's a short window each year to reconsider that decision. If your coverage hasn't worked the way you expected, now might be the time to adjust it. 

Making the right Medicare decision is one of the most important smart money moves for seniors you can make. Below is what retirees should know before the deadline passes.

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The March 31 Medicare Advantage deadline

People already enrolled in Medicare Advantage have a special enrollment window each year called the Medicare Advantage Open Enrollment Period, which runs from January 1 through March 31.

During this time, you can switch to a different Medicare Advantage plan, drop Medicare Advantage altogether, or add a Part D prescription drug plan after returning to Original Medicare.

However, you can only make one change during this period. Once that change takes effect, you generally must keep the new coverage until the next enrollment period.

For retirees who feel their current plan isn't meeting their needs, this window offers one more opportunity to reassess coverage before the year is locked in.

What Medicare Advantage actually is

Medicare Advantage, sometimes called Medicare Part C, is an alternative way to receive Medicare benefits.

Instead of receiving benefits directly through the federal Medicare program, beneficiaries enroll in a private insurance plan that administers their coverage.

These plans must cover everything included in Medicare Part A and Part B. Many Medicare Advantage plans also include extra benefits like:

  • Prescription drug coverage
  • Vision and dental services
  • Hearing care
  • Fitness memberships

According to the Kaiser Family Foundation, more than half of Medicare beneficiaries are now enrolled in Medicare Advantage plans.

How Original Medicare works

Original Medicare refers to the traditional government-run program that includes Part A and Part B. Under Original Medicare, you can generally visit any doctor or hospital that accepts Medicare, and referrals aren't typically required to see specialists.

However, Original Medicare does not include prescription drug coverage. Many retirees add a Part D prescription drug plan to help cover these extra costs.

While this combination often provides broad flexibility in choosing providers, it may involve higher monthly premiums than some Medicare Advantage plans.

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Key differences between Medicare Advantage and Original Medicare

The choice between Medicare Advantage and Original Medicare often comes down to a trade-off between cost, flexibility, and coverage structure. Here's a quick comparison:

  • Provider access: Medicare Advantage is usually network-based, while Original Medicare is not.
  • Premiums: Medicare Advantage plans often have lower premiums than Original Medicare with Medigap.
  • Extra benefits: Medicare Advantage often includes extra benefits.
  • Out-of-pocket maximum: Medicare Advantage plans may have an out-of-pocket maximum, while Original Medicare has no extra gap.
  • Referrals: Medicare Advantage plans may require referrals to see specialists, while Original Medicare usually does not.

Neither option is automatically better for everyone. The right choice depends on health needs, budget, and preferred doctors.

Types of Medicare Advantage plans available

Medicare Advantage plans come in several different structures. Each works a little differently.

HMO plans typically require staying within a provider network and getting referrals for specialists. These plans often have lower premiums, but you pay for them with flexibility.

PPO plans allow you to see providers inside and outside the network. Out-of-network care may cost more, but these plans generally provide more freedom in choosing doctors.

Special Needs Plans are designed for people with specific health conditions or circumstances, like chronic illnesses and residents in long-term care facilities.

When switching plans might make sense

Medicare Advantage plans can change from year to year, which means a plan that worked well last year may not fit as well today. Retirees sometimes consider switching if they notice:

  • Doctors leaving the plan network
  • Prescription drug coverage changes
  • Higher out-of-pockets costs
  • New health conditions requiring specialized care

Another common reason people reconsider Medicare Advantage is if they prefer broader access to providers, which Original Medicare may provide. Before switching, it's often helpful to review a plan's provider directory and drug formulary to ensure your preferred doctors and medications are covered.

What to consider before making a change

Choosing the right Medicare coverage can involve more than simply comparing monthly premiums. Retirees may weigh factors like:

  • Whether their preferred doctors and hospitals are in-network
  • Expected prescription drug costs
  • Annual out-of-pocket maximums
  • Access to specialists
  • Additional benefits like dental or vision coverage

It may also help to consider long-term health care needs, especially if managing a chronic condition.

Bottom line

Medicare Advantage enrollees have until March 31 to switch plans or move back to Original Medicare. After that deadline, most beneficiaries will need to wait until the fall enrollment period to make another change.

Medicare Advantage plans can change their provider networks and drug formularies each year, which means the plan you chose previously might not offer the same coverage today. Taking a few minutes to review your options now could help you avoid wasting money in retirement and ensure your health care coverage still fits your situation.

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