Medicare Advantage Open Enrollment Deadline Falls on Dec. 7

Medicare's annual open enrollment period runs through Dec. 7, and as many as 5 million seniors whose Medicare Advantage plans are being discontinued will need to log on and select new coverage before the deadline, according to NPR.

For beneficiaries whose current plan is ending, the stakes of the enrollment window are higher than in a typical year. Instead of simply deciding whether to switch for better benefits or a lower premium, those enrollees face a choice they did not ask for: pick a replacement plan or risk gaps in coverage when the new year begins.

Who needs to act before Dec. 7?

The open enrollment period, which began Oct. 15 and closes Dec. 7, is open to all Medicare beneficiaries who want to change plans for the coming year. But NPR reports the population under the most pressure this cycle is the roughly 5 million people enrolled in a Medicare Advantage plan that will not exist in 2027. Those enrollees cannot simply do nothing and keep their current arrangement, because the plan itself is going away.

Medicare Advantage plans are sold by private insurers as an alternative to traditional, government-run Medicare. Insurers periodically add, change or drop specific plans from their lineups year to year, and when a plan is discontinued, every member enrolled in it has to choose a new one or be moved into a different coverage arrangement.

What happens if someone misses the deadline?

The open enrollment window is the primary chance each year for beneficiaries to change plans without a special qualifying circumstance. Missing the Dec. 7 cutoff does not mean a person goes without any coverage, since Medicare still provides a safety net, but it narrows the beneficiary's ability to choose among competing Medicare Advantage options and compare costs before new coverage automatically takes effect. For someone whose plan is being discontinued, failing to actively select a new plan by Dec. 7 means the decision effectively gets made for them.

How can beneficiaries find a new plan?

The enrollment process works the same way whether someone is affected by a plan cancellation or simply shopping around: compare the available Medicare Advantage and traditional Medicare options, check which doctors and prescriptions are covered under each, and submit the change before the Dec. 7 deadline. NPR's reporting frames this enrollment period as a moment when the volume of affected seniors — as many as 5 million, per the network's reporting — makes the practical act of logging on and completing the process especially urgent this year.

As many as 5 million seniors will need to log on and pick a new Medicare Advantage plan before the Dec. 7 deadline, NPR reports.

Why does this matter beyond the individual enrollee?

The scale described by NPR — millions of people needing to reselect coverage in a single enrollment cycle — underscores how plan discontinuations ripple through the broader Medicare Advantage market every year. Each cancellation forces not just a benefits comparison but a fresh check of provider networks and drug formularies, since a new plan from even the same insurer can carry different coverage terms than the one it replaces.

Where can seniors get help enrolling?

NPR's reporting points beneficiaries toward the Dec. 7 deadline itself as the operative fact to plan around. For anyone uncertain whether their current Medicare Advantage plan is among those being discontinued, confirming that status before the enrollment window closes is the first step, since the remaining weeks are the only guaranteed opportunity this year to choose a replacement rather than have one assigned by default.

The open enrollment period applies nationally and covers all Medicare Advantage and Part D prescription drug plan changes for the 2027 coverage year. Beneficiaries who are unaffected by a plan cancellation can still use the window through Dec. 7 to switch plans for other reasons, such as cost or network changes, under the same deadline described in NPR's report.

For the full account of the open enrollment period and the scale of affected enrollees, see NPR's original report.