Seasonal

Medicare enrollment 2026, calendar of windows and common Polish-American situations

7 min read

The 2026 season is closer than it feels. Medicare doesn't let your parent enroll or change plans whenever they want. There are tightly defined windows, each with its own rules. Here's a short calendar for the coming year and the situations we see most often in Polish-American families. Snowbirds between Illinois and Florida, people retiring after 65, families helping parents with their first enrollment. This isn't a substitute for the full enrollment guide. It shows what to do this fall, not how the whole system works.

The four windows worth knowing for 2026

Most enrollment conversations come down to four windows. Each has its own rules and its own audience.

IEP, Initial Enrollment Period

A seven-month window around the 65th birthday. Three months before the birthday month, the birthday month itself, three months after. For people entering Medicare for the first time. Allows enrollment in Part A and B, plus a Medicare Advantage plan, Medigap, or Part D. This is also the one-time window to buy a Medigap policy without medical underwriting.

AEP, Annual Enrollment Period (fall)

October 15 to December 7, 2026. Open to anyone already on Medicare. Allows your parent to change their Medicare Advantage plan, drop it and return to Original Medicare, or add or change a Part D plan. A plan chosen by December 7 takes effect January 1, 2027. After December 7, the application isn't valid.

MA-OEP, Medicare Advantage Open Enrollment Period (spring)

January 1 to March 31, 2026. Only for people already enrolled in a Medicare Advantage plan. Allows a one-time switch to a different Advantage plan, or a return to Original Medicare (with the option to add Part D). It doesn't allow first-time enrollment in Advantage or changes to Part D if your parent has Original Medicare.

SEP, Special Enrollment Period

Opens when specific life events occur. A move outside the plan's service area, loss of employer coverage, getting or losing Medicaid, returning from a longer stay abroad. Usually 2 to 3 months from the event. We cover it in a separate SEP guide.

What exactly AEP lets your parent do

AEP 2026 runs from October 15 to December 7. It's the only window where anyone on Medicare, no matter their situation, can freely review options and switch plans. A plan chosen during this window takes effect January 1, 2027.

• switching one Medicare Advantage plan for another,
• dropping Medicare Advantage and returning to Original Medicare,
• moving from Original Medicare to Medicare Advantage,
• enrolling in, changing, or dropping a standalone Part D plan,
• adding Part D to Original Medicare.

AEP is also when your parent's current plan sends the ANOC letter (Annual Notice of Change) describing what's different for the new year. What to look for in it is in our guide on annual changes.

Three common situations in Polish-American families

These come up regularly in our practice. We show which window typically applies, with the caveat that every case needs individual review.

Illinois to Florida (or Arizona) snowbird

Your parent spends winter in Florida or Arizona and summer in Illinois. The registered address stays in one state. What matters is whether the plan covers both regions, or whether you understand how "out-of-network" visits work in the second state. Medicare Advantage plans often have local networks. What works in Niles doesn't always work in Naples. Original Medicare with Medigap gives more freedom across states, but costs differently. Changing the registered address full-time to the second state can open an SEP. The fall AEP is a good moment to review whether the current plan fits your parent's real lifestyle.

Late retirement after 65

Your parent keeps working until 67, 68, or later with employer coverage. After retirement, a Special Enrollment Period opens, usually 8 months for Part B (to avoid the lifetime penalty) and 2 months to join a Medicare Advantage plan or Part D from the date employer coverage ends. This window works year-round, independent of AEP. The key piece is a letter from the employer confirming creditable coverage and the end date. Without that document, Social Security may decline penalty-free enrollment.

First enrollment for a parent who doesn't speak English

Adult children often help parents through the first enrollment. This usually involves the IEP, the seven-month window around the 65th birthday. Worth remembering that Social Security and CMS accept a translator, but the forms must be filled out in English. The Medicare card arrives by mail at the registered address. Some people in the Polish-American community have Marketplace (Obamacare) health insurance and don't know that they need to switch to Medicare after 65. Marketplace is not creditable coverage for Part B. Missing that transition triggers the same lifetime 10% penalty for every 12 months late.

What to avoid during AEP season

Every fall, media (television, radio, Polish-language channels) fill with Medicare plan ads. CMS allows them, but with strict rules. A few practical rules that protect your parent's interest:

• Your parent shouldn't enroll in a plan "on the spot" over the phone with someone who called them first. A legitimate sale requires a prior consent (scope of appointment) signed before any plan-specific conversation.
• Don't buy a plan because "someone from Medicare called." Federal Medicare doesn't make sales calls, doesn't go door to door, and doesn't sell plans. All Advantage and Part D plans are sold by private companies through their licensed agents.
• Don't drop the current plan before the new one is confirmed. The application is not the confirmation. The approval letter usually arrives a few weeks later.
• Don't rush the decision. AEP runs seven weeks. There's time to compare two or three plans calmly.

What we actually do during AEP

Our work during AEP season isn't about "finding your parent the best plan," because "best" depends on their doctors, drugs, location, and budget. It's about comparing available options in a way that's understandable. In practice, it looks like this:

1. We write down your parent's doctors, specialists, and preferred hospitals.
2. We list all regularly taken medications with dosages.
3. We ask about lifestyle. Whether they winter elsewhere, how often they travel, what the care budget looks like.
4. We check which plans in their area include their doctors in network and their drugs on the list.
5. We compare annual costs (not just monthly premiums) and explain what each column means.
6. We present 2 or 3 best-fitting options with the differences spelled out. The final decision is your parent's.