Medicare 2026

Why Medicare Enrollment Dates Matter for Memphis Readers

MEMPHIS, Tenn. — Choosing between Original Medicare with a Medigap policy and Medicare Advantage is not just a coverage question. It is a calendar question. The two paths are built differently, and the windows to move between them close on specific dates. Miss one, and your options can narrow for years.

That timing piece is what trips up most Memphis readers who write in. So this guide focuses on the deadlines that shape the choice — and what happens when they pass.

The two paths, in one minute

Original Medicare is the federal program: Part A (hospital) and Part B (doctor and outpatient). It pays a share of your care, and you owe the rest. A Medigap policy — sold by private insurers — helps pay those leftover costs. Drug coverage (Part D) is a separate plan you add.

Medicare Advantage (Part C) is different. A private plan, approved by Medicare, delivers your Part A and Part B benefits in one package, usually with a network and often with drug coverage built in.

You are in one path or the other. That is why the switch dates matter so much.

The deadlines that actually shape your choice

Three windows do most of the heavy lifting:

Initial Enrollment Period. A seven-month window around your 65th birthday. This is when most people first sign up for Part A and Part B and pick a path.

Annual Enrollment Period (AEP): Oct. 15 – Dec. 7. During AEP, anyone with Medicare can join, switch, or drop a Medicare Advantage plan or a Part D drug plan. Changes take effect Jan. 1.

Medicare Advantage Open Enrollment Period (MA OEP): Jan. 1 – March 31. If you are already in a Medicare Advantage plan on Jan. 1, you get one chance during this window to switch to a different Advantage plan or drop back to Original Medicare (and add a Part D plan). You cannot use MA OEP to jump from Original Medicare into an Advantage plan.

The Medigap window is the one people miss

Here is the deadline that quietly causes the most regret in Shelby County: the Medigap Open Enrollment Period. It is a one-time, six-month window that starts the month you are 65 and enrolled in Part B.

During those six months, insurers must sell you any Medigap policy they offer at their standard price, regardless of your health history. Once that window closes, in most states — Tennessee included — insurers can use medical underwriting. That means they can look at your health and either charge more or turn you down.

So a Memphian who picks Medicare Advantage at 65 and later wants to move to Original Medicare + Medigap can usually make the Advantage switch during AEP or MA OEP — but getting a Medigap policy to go with it is not guaranteed. That is the deadline interaction most people don't see coming.

What happens if you miss a window

• Miss your Initial Enrollment Period for Part B? You may face a late enrollment penalty added to your Part B premium — often for as long as you have Medicare.
• Miss Part D when first eligible and go without other creditable drug coverage? A Part D late enrollment penalty can apply for life.
• Miss AEP? Your current Advantage or Part D plan usually rolls into 2027 with the changes in its Annual Notice of Change. You generally wait until October 2027 to change it, unless you qualify for a Special Enrollment Period (a move, loss of other coverage, Medicaid eligibility, and similar life events).
• Miss your Medigap Open Enrollment Period? You can still apply later, but approval and price are no longer guaranteed.

How this plays out in Memphis

Memphis is in Shelby County, where — as in most metro counties — multiple Medicare Advantage and Part D plans are offered each year. The number changes annually, and the official plan lineup for the coming year is posted on medicare.gov ahead of AEP each October.

That is the moment to compare. Plans can change their networks, formularies, and cost-sharing from one year to the next, and the notice your current plan mails you in the fall (the Annual Notice of Change) spells out what is shifting for Jan. 1.

A quick note on 2026 numbers worth knowing

Whichever path you are on, a few program-level figures apply:

• Part D has a new $2,100 out-of-pocket cap on covered drugs in 2026.
• The Part D maximum deductible is $615 in 2026 and $700 in 2027.
• The old coverage gap ("donut hole") is gone as of 2025; Part D now has three phases.
• The Medicare Prescription Payment Plan lets you spread drug costs across the year in monthly bills instead of paying at the pharmacy counter.
• IRMAA surcharges on Part B and Part D premiums start above $109,000 in income for a single filer in 2026.