Medicare Part D

How the Part D Coverage Gap Ends for Naperville Medicare

NAPERVILLE, Ill. — The way you pay for prescription drugs under Medicare Part D changed in a big way on Jan. 1, 2026, when a hard yearly ceiling on out-of-pocket costs took effect. For 2027, that ceiling is $2,400.

That number matters. It's the biggest shift in Part D since the program began, and it affects every person with a stand-alone Part D plan or a Medicare Advantage plan that includes drug coverage. Here in Naperville — and across DuPage County — the Annual Enrollment Period (Oct. 15 through Dec. 7) is the moment to make sure your 2027 coverage still fits.

What's actually new in 2027

For 2027, Medicare's Part D rules set a few clear numbers:

• $2,400 is the maximum you'll pay out of pocket for covered Part D drugs in a calendar year in 2027 (it is $2,100 in 2026).
• $700 is the highest allowed Part D deductible in 2027 ($615 in 2026). Plans can charge less, but none can charge more.
• Once you hit the $2,100 cap, you pay $0 for the rest of the year on your plan's covered drugs.

That cap resets every January. It applies to your share of costs on covered drugs — not to premiums, and not to drugs that aren't on your plan's formulary.

The "donut hole" is really gone

For years, people on Part D dreaded the coverage gap — the middle stretch where you suddenly paid more before catastrophic coverage kicked in. That gap was eliminated in 2025.

In 2027, Part D has just three phases:

1. Deductible phase — you pay full negotiated cost until you meet the plan's deductible (up to $700 in 2027). 2. Initial coverage phase — you pay a copay or coinsurance for each prescription. 3. Catastrophic phase — once your out-of-pocket spending hits the yearly cap ($2,400 in 2027), you pay nothing more for covered drugs that year.

No more confusing middle stage. No more "why did my pill suddenly cost triple in July?"

The Medicare Prescription Payment Plan — the "smoothing" option

Here's the part a lot of people miss: even with the yearly cap, you could still get hit with a big bill early in the year if you take an expensive drug. Imagine picking up a prescription in January that costs a large amount at the counter. Under the old rules, you'd owe it all right then.

Medicare's new Prescription Payment Plan lets you spread that cost across the remaining months of the calendar year instead. You still owe the same total amount — nothing is forgiven — but you pay your Part D plan in monthly installments rather than all at once at the pharmacy.

A few things to know:

• It's optional. You have to opt in through your Part D or Medicare Advantage drug plan.
• It doesn't lower your costs; it changes the timing.
• It's most useful for people with high drug costs early in the year. If your drug costs are low and steady, it may not help.
• You can sign up before the plan year starts or any month during the year.

If this sounds like it might fit your situation, call your plan directly and ask how to enroll.

Common mistakes to avoid this fall

The rules changed. Your plan's formulary, tier structure, and pharmacy network may have changed too. Here's what trips people up:

• Assuming last year's plan still works. Every fall, plans send an Annual Notice of Change (ANOC). Read it. Drugs move tiers. Pharmacies drop in and out of networks.
• Ignoring the payment plan option when a big early-year cost would be a real hardship.
• Thinking the yearly cap covers everything. It covers Part D drugs. It does not cover Part B drugs (like many infusions given in a doctor's office), dental, or over-the-counter items.
• Missing Dec. 7. That's the deadline to change your Part D or Medicare Advantage plan for 2027. Medicare Advantage members get a second window — Jan. 1 through March 31 — but stand-alone Part D changes are locked in after Dec. 7 for most people.
• Forgetting about IRMAA. Higher-income enrollees pay a surcharge on top of the standard Part D premium. For 2026, IRMAA surcharges begin above $109,000 in income for a single filer (based on your 2024 tax return).

Where Naperville fits in

Naperville is in DuPage County, and Medicare plan availability is set at the county level. That means the menu of Part D and Medicare Advantage plans you can choose from is the same whether you live near downtown Naperville or elsewhere in DuPage. When comparing options for 2027, use the Plan Finder at Medicare.gov and enter your ZIP code and your current medication list. The tool will show you what each plan would cost you based on your drugs.