Medicare Part D in Utah: why the cheapest plan is usually the wrong one

How does a Part D plan actually decide what I pay?

By putting each medication into a tier. Every Part D plan publishes a formulary — its list of covered drugs — and sorts them into a small number of tiers, typically five. Your copay or coinsurance is set by the tier, not by the drug, and every plan tiers the same drugs differently.

That last point is the whole game. The same medication can be tier 2 on one plan and tier 4 on another. On tier 2 you might pay a modest fixed copay; on tier 4 you might pay a percentage of a much larger price. Nothing about the drug changed. Only the plan's classification of it did.

There is a second layer beyond price: restrictions. A plan can cover a drug and still make you work for it. Prior authorisation means your prescriber has to justify the prescription before the plan will pay. Step therapy means you must try a cheaper alternative first. Quantity limits cap how much you can get at once. None of these show up in a premium comparison, and all of them can delay treatment.

What happened to the donut hole?

It is gone. The coverage gap that used to sit in the middle of every Part D year — where your costs jumped sharply after your drug spending passed a threshold, and stayed high until catastrophic coverage kicked in — was eliminated by the Inflation Reduction Act. In its place, Part D now has a hard annual cap on what you can pay out of pocket.

This is the most consequential change to Part D since the programme began, and a surprising number of people are still budgeting around a structure that no longer exists. If you have been avoiding a medication because you remember what happened in the donut hole, that arithmetic is out of date.

There is also a payment-smoothing option now, usually called the Medicare Prescription Payment Plan. It does not reduce what you pay across the year; it spreads it into monthly instalments instead of landing it all at the pharmacy counter in January. For someone with a specialty medication whose annual exposure arrives in the first two months, that can be the difference between filling the prescription and not.

Why can two plans with similar premiums cost me thousands apart?

Because the premium is a small, fixed number and the tier costs are large, variable ones. Consider a household taking four medications — three common generics and one brand-name drug. The generics behave predictably across plans. The brand drug does not, and it dominates the outcome.

Plan A is the cheapest plan on the premium column and the most expensive plan for this household by more than $2,000. Plan C is priced in the middle and still costs $1,350 more than Plan B, purely because the household fills prescriptions at a pharmacy the plan does not treat as preferred. Nothing in the plan listings makes any of this obvious.

What if my medication is not on the formulary at all?

Then the plan pays nothing and you pay the full retail price, and none of that spending counts toward your annual out-of-pocket cap. This is categorically different from a drug on an expensive tier. An expensive tier is a bad price; an absent drug is no coverage.

You are not without options, but each one takes time and none is guaranteed. Knowing the routes before you need them is worth the five minutes.

1. Ask about a therapeutic alternative. Often a covered drug in the same class works equally well, and your prescriber can switch you.
2. Request a formulary exception. Your prescriber submits a statement explaining why the covered alternatives are not appropriate for you. Plans must have a process for this.
3. Appeal a denial. There is a defined multi-level appeals process with deadlines the plan has to meet, including an expedited track when waiting would harm you.
4. Check the manufacturer's assistance programme. Many brand manufacturers run patient assistance for people who meet income criteria.
5. Change plans at the next opportunity. During Annual Enrollment, pick a plan whose formulary actually includes what you take.

Does it matter which pharmacy I use?

Yes, and more than most people expect. Part D plans build pharmacy networks with tiers of their own: preferred pharmacies, standard in-network pharmacies, and out-of-network. The same plan, the same drug, the same day — different price depending on where you fill it.

In Salt Lake County this is usually a mild inconvenience; there is almost always a preferred pharmacy within a reasonable drive. Across the rest of Northern Utah it can be a genuine constraint. In Box Elder and Morgan counties, and in the smaller towns generally, the number of pharmacies is limited enough that "just use a preferred pharmacy" may mean a substantially longer drive, or none at all.

What is Extra Help, and would I qualify?

Extra Help — formally the Low-Income Subsidy — is a federal programme that pays most or all of a Part D plan's premium, deductible and cost-sharing for people whose income and resources fall below set limits. For those who qualify it is transformative, frequently reducing a four-figure annual drug cost to a small fraction of it.

It is also badly under-claimed. Two things cause that. First, people assume the limits are far lower than they actually are and never check. Second, the resource test excludes the two assets most people think would disqualify them.

• Your home does not count toward the resource limit
• Your vehicle does not count
• Personal possessions and household goods do not count
• What counts is chiefly savings, investments and real estate other than your home
• Income limits are set as a percentage of the federal poverty level and are adjusted annually

If you receive Medicaid, Supplemental Security Income, or help from a Medicare Savings Program, you are generally deemed eligible automatically and do not need to apply separately. Everyone else applies through the Social Security Administration, and the application is free. There is no downside to being told no.

What if I take no prescriptions at all?

Enrol in an inexpensive plan anyway. Part D carries a late enrolment penalty of 1% of the national base beneficiary premium for every month you go without creditable drug coverage after your Initial Enrollment Period ends — and it is permanent, added to your premium for as long as you have Part D.

The people who get caught by this are precisely the healthy ones. They take nothing at 65, see no reason to buy drug coverage, and enrol at 70 when something is prescribed. By then they have accumulated sixty months of penalty, which they will then pay every month for the rest of their life.

How do I compare plans properly without losing a weekend?

With a list and a method. The comparison is genuinely mechanical once you have the inputs, and it takes about half an hour rather than a weekend — but skipping the inputs is what turns it into guesswork.

1. Write down every medication with the exact strength and the monthly quantity. "Blood pressure pill" is not enough; the strength changes the tier.
2. Write down your pharmacy — the one you actually use, not the one nearest your house.
3. Enter both into Medicare's Plan Finder at medicare.gov, which prices every available plan against your specific list.
4. Sort by estimated total annual cost, never by premium.
5. Open the top three and check each drug individually: is it on the formulary, on which tier, and with what restrictions?
6. Check restrictions specifically — prior authorisation, step therapy and quantity limits do not appear in the cost estimate but will appear in your life.
7. Confirm the pharmacy is preferred on the plan you are about to choose, and price the mail-order alternative.
8. Repeat every autumn. Formularies, tiers and pharmacy networks all reset on 1 January.

When can I change my Part D plan?

The main window is Annual Enrollment, 15 October to 7 December, with the new plan effective 1 January. That is when most people should be reviewing, because it is also when the plan you already have is quietly changing underneath you.

One more thing worth saying plainly: doing nothing is a decision. If you take no action during Annual Enrollment, you keep your current plan under next year's formulary, next year's tiers, next year's pharmacy network and next year's premium. That is sometimes fine. It should still be a choice you make rather than one that happens to you.

The bottom line

Part D rewards half an hour of preparation more than almost any other insurance decision. Write down every medication with its strength and quantity, name the pharmacy you actually use, price plans on total annual cost rather than premium, and check the tier and the restrictions on each drug individually. If your income is modest, check Extra Help before you assume it is not for you. And if you take nothing at all, enrol in something cheap anyway — the penalty for waiting lasts the rest of your life.