
Of all the parts of Medicare, Part D — prescription drug coverage — is probably the one that causes the most quiet frustration. People sign up, premiums get deducted, and then they get to the pharmacy and pay more than they expected. Or a drug they’ve taken for years suddenly costs three times what it used to.
If that sounds familiar, there’s a good chance your plan and your prescriptions aren’t as well-matched as they could be.
Why Part D Is Confusing by Design
Each Medicare Part D plan has what’s called a formulary — a list of covered drugs, organized into pricing tiers. A drug on Tier 1 might cost you a couple of dollars. That same drug on Tier 3 at a different plan could cost $40 or $50. And insurance companies are legally allowed to change their formularies every January.
That’s important: what your plan covered well last year may have shifted. Your drug might have moved to a higher tier, or it might have been dropped from the formulary entirely.
Most people don’t find out until they’re already at the counter.
The Annual Review Window You Might Be Ignoring

Every year from October 15 through December 7, Medicare holds what it calls the Annual Enrollment Period. During this window, you can switch Part D plans without penalty — your new coverage takes effect January 1.
The mistake most Ohio retirees make is assuming their current plan is fine because it was fine last year. Part D plans can change premiums, deductibles, formularies, and pharmacy networks every year, and many people are paying more than necessary simply because they haven’t compared options recently.
If you take more than one prescription medication, it’s worth running a comparison every fall. We do this for clients regularly, and it’s not unusual to find $500 or even $1,000 in annual savings just from switching to a better-matched plan.
Mail Order, Local Pharmacies, and Preferred Networks
Part D plans don’t all cover pharmacies equally. Most plans have preferred pharmacy networks, where your copays are lower, and standard networks, where you pay more for the same drug. Some plans heavily favor mail-order delivery for maintenance medications, while others work well with local pharmacies in the Dayton area.
If you’re loyal to a specific pharmacy — or if you need to pick up prescriptions quickly and can’t wait for mail delivery — that’s worth checking before you choose a plan.
What About the Coverage Gap?
You may have heard of the “donut hole” — a coverage gap that used to hit Medicare beneficiaries hard. It’s been largely closed under recent legislation, but Part D costs still vary based on your total drug spending throughout the year, and the specifics depend on which plan you have.
High-cost medications — biologics, specialty drugs, some cancer treatments — are where beneficiaries tend to feel this most. If you’re on any expensive drugs, understanding your full-year cost exposure under different plan options is important.
One Thing Worth Knowing Before Open Enrollment
There’s a Medicare tool called the Plan Finder (available at medicare.gov) that lets you enter your prescriptions and compare plans based on your actual drug list. It’s useful, but it can be overwhelming, and the results don’t always account for nuances like preferred pharmacy networks or upcoming formulary changes.
Working with a local advisor who knows the plans available in Ohio — and can walk through your specific prescription list — tends to yield better results than trying to sort it out on your own.
At Medicare & Retirement Solutions Group, Part D reviews are something we do regularly for clients throughout the Miami Valley. If you haven’t compared your plan options in the last year or two, it’s worth a conversation.
Schedule a free consultation or call us at 937-416-2991. Open Enrollment comes around once a year — it’s the one time you have full flexibility to make a change.
Sources
- Medicare.gov — Part D plan comparison tool
This article is general educational information, not individualized financial, tax, or insurance advice. Medicare and tax figures are adjusted annually — confirm current-year amounts with the agency or your plan documents before acting on them.
