Medicare Part D

In Waterbury, why the same Part D prescription can ring up differently across town

WATERBURY, Conn. — You hand the same prescription card to two pharmacies a few miles apart, and the amount you pay is not the same. That is not a mistake at the register. It is how Medicare Part D pharmacy networks are built, and it is worth understanding before your next refill.

Waterbury is in New Haven County, where dozens of stand-alone Part D drug plans and Medicare Advantage plans with drug coverage are sold each year. Every one of those plans decides which pharmacies are in its network — and, within that network, which pharmacies get the "preferred" label. That label is where a lot of the price difference comes from.

What a Part D pharmacy network actually is

Every Part D plan — whether it is a stand-alone drug plan or the drug side of a Medicare Advantage plan — contracts with a list of pharmacies. That list is the plan's network.

Inside the network, plans usually split pharmacies into two groups:

• Preferred (or "preferred cost-sharing") pharmacies. The plan has negotiated lower cost-sharing at these counters. Your copay or coinsurance is generally lower here.
• Standard (or "standard cost-sharing") pharmacies. Still in-network, still covered — but you typically pay more for the same drug than you would at a preferred pharmacy.

If you go to a pharmacy that is not in the network at all, your plan may not cover the prescription except in limited situations, such as an emergency away from home.

Why the same pill can ring up two different prices

The price you pay at the counter is not just the cost of the drug. It is the drug's tier in your plan's formulary, combined with the cost-sharing rules the plan has set for that tier — and those rules can be different at a preferred pharmacy than at a standard one.

So the same tablet, on the same plan, filled the same day, can cost one amount at a preferred pharmacy on one side of Waterbury and a different amount at a standard pharmacy on the other side. Nothing has gone wrong. The plan is doing exactly what it said it would do in its documents.

Two other things also move the price:

• Which phase of Part D you are in. In 2025 the coverage gap was eliminated, so Part D now has three phases: deductible, initial coverage, and catastrophic. What you pay in each phase can differ.
• Whether the drug is generic, brand, or specialty. Tiers matter as much as the pharmacy choice.

Where mail order fits in

Most Part D plans also offer a mail-order pharmacy, usually run by the plan's pharmacy benefit manager. Mail order is its own lane inside the network, with its own cost-sharing rules — often geared toward a 90-day supply of drugs you take regularly.

Mail order can be convenient for maintenance medications like blood pressure or cholesterol pills. It is usually less useful for a short-course antibiotic you need this afternoon. The key point: mail-order cost-sharing is set separately from retail preferred and standard cost-sharing, so it is a third price to compare, not a shortcut.

How to check before you fill a prescription

You do not have to guess. Medicare's official Plan Finder lets you enter your drugs and your ZIP code and see, plan by plan, which pharmacies near you are preferred, which are standard, and what mail order looks like.

A few practical steps:

1. Go to medicare.gov/plan-compare and enter your Waterbury ZIP code. 2. Add each of your prescriptions, with the exact dose and quantity. 3. Look at the pharmacy list the tool builds. Preferred pharmacies are labeled. 4. Compare estimated yearly drug costs at a preferred pharmacy versus a standard one — the tool shows both. 5. If you use mail order or think you might, check that line separately.

You can also call 1-800-MEDICARE (1-800-633-4227), 24 hours a day, or reach Connecticut's State Health Insurance Assistance Program (SHIP), called CHOICES, for free one-on-one help. SHIP counselors do not sell plans.

A few numbers worth knowing for 2027

These apply no matter which pharmacy you choose:

• The Part D out-of-pocket cap is $2,100 for 2026 and $2,400 for 2027. Once you hit it, you pay nothing for covered Part D drugs the rest of the year.
• The Part D maximum deductible is $615 in 2026 and $700 in 2027. Plans can set a lower deductible, but not a higher one.
• The Medicare Prescription Payment Plan lets you spread your yearly drug costs across monthly bills instead of paying big amounts at the pharmacy counter. It is optional and free to opt into through your plan.
• IRMAA surcharges on Part B and Part D premiums start above $109,000 in income for a single filer in 2026.

When you can change plans

If you look at the numbers and decide a different Part D plan would fit your pharmacy habits better, mark two windows on the calendar:

• Annual Enrollment Period: October 15 through December 7, for coverage that starts January 1.
• Medicare Advantage Open Enrollment Period: January 1 through March 31, for people already in a Medicare Advantage plan who want to switch to another Medicare Advantage plan or return to Original Medicare with a stand-alone Part D plan.