Medicare 2026

Medigap vs. Advantage: Why the Dec. 7 Deadline Matters

LITTLE ROCK, Ark. — For Medicare shoppers in Little Rock, the choice between Original Medicare paired with a Medigap policy and a Medicare Advantage plan is not just about coverage design. It is also about the calendar. The two paths follow different enrollment rules, and missing a window on one side can quietly close a door on the other.

With the Annual Enrollment Period running now through Dec. 7, here is how the timing works — and why the date you pick a lane can matter as much as the lane itself.

The two structures, in one minute

Original Medicare is the federal program — Part A (hospital) and Part B (doctor and outpatient). You can add a stand-alone Part D drug plan, and many people add a Medigap (Medicare Supplement) policy sold by a private insurer to help with the out-of-pocket costs Original Medicare leaves behind.

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 Part D drug coverage built in. These plans use networks and their own rules for things like referrals and prior authorization.

Little Rock is in Pulaski County, where multiple Medicare Advantage and Part D plans are offered each year. The exact count changes annually, and you can see the current lineup on medicare.gov's Plan Finder.

The deadline that trips people up: Medigap's six-month window

Here is the timing rule most new enrollees don't hear about until it's too late. When you first sign up for Part B at age 65 or later, a six-month Medigap Open Enrollment Period begins. During that window, insurers in Arkansas must sell you any Medigap policy they offer at their standard rate, regardless of your health history.

After those six months pass, that guarantee generally goes away. Insurers can ask health questions, charge more, or decline to sell you a Medigap policy at all. There are a few limited "guaranteed issue" situations later on — for example, if a Medicare Advantage plan leaves your area — but they are exceptions, not the rule.

That is why the choice between the two paths is partly a timing decision. Picking Medicare Advantage first and then trying to switch to Original Medicare plus Medigap a few years later is possible, but you may face underwriting when you shop for the Medigap side.

The two windows everyone shares: Oct. 15 and Jan. 1

Two annual dates apply to almost every Medicare beneficiary in Little Rock:

• Annual Enrollment Period (AEP): Oct. 15 – Dec. 7. During this window you can join, switch, or drop a Medicare Advantage plan, and you can join, switch, or drop 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 this window to jump from Original Medicare into an Advantage plan.

Notice what MA OEP does not do: it does not restart your Medigap guaranteed-issue rights. Dropping an Advantage plan in February is allowed, but a Medigap insurer in Arkansas can still ask health questions before selling you a supplement.

What happens if you miss a window

Missing AEP usually means waiting until next Oct. 15 to make a routine change, unless you qualify for a Special Enrollment Period — for example, moving out of a plan's service area, losing other coverage, or qualifying for Extra Help.

Missing your initial Part B enrollment window can trigger a lifelong Part B late-enrollment penalty. Missing Part D creditable coverage for 63 or more days in a row can trigger a Part D late-enrollment penalty that follows you as long as you have drug coverage. These are separate from the Medigap timing issue above.

A few 2026 and 2027 numbers to keep in mind

Whichever path you take, the drug side of Medicare has some fixed rules. Figures below are labeled by year:

• The Part D out-of-pocket cap is $2,100.
• The Part D maximum deductible is $615.
• 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 your drug costs across the year in monthly payments instead of paying at the pharmacy counter.
• IRMAA income surcharges on Part B and Part D begin above $109,000 for a single filer in 2026.

These figures apply whether your drug coverage comes through a stand-alone Part D plan alongside Original Medicare or through a Medicare Advantage plan that includes drugs.

How to line up your decision with the calendar

A simple way to think through timing:

1. If you are new to Medicare, know your six-month Medigap window and decide within it whether you want the Original Medicare + Medigap structure. 2. If you are already in Medicare, use AEP (through Dec. 7) for any change to your Advantage or Part D plan for the coming year. 3. If you are in an Advantage plan on Jan. 1 and want out, MA OEP gives you one more move by March 31 — but check Medigap underwriting rules in Arkansas before you leap.

Star Ratings, published by Medicare each fall, can help you compare Advantage and Part D plan quality on medicare.gov's Plan Finder. They are one input among several, not a substitute for looking at how a plan handles your doctors, hospitals, and prescriptions.