How to Compare Medicare Part D Plans for January 2027 Coverage

Scenario: "My 2027 ANOC moved Eliquis to tier 4. Do I only shop drug plans?"

Maybe you only need to shop drug plans. Maybe you need to rethink your whole Medicare Advantage contract. If doctors and hospitals still fit on your 2027 plan ID, standalone Part D or MA-PD formulary work may be enough. If the medical network also changed, drug-only math will not fix January bills.

Your 2027 Annual Notice of Change (ANOC) should be open on the table during AEP. This walkthrough is for comparing January 2027 drug coverage after you read what changed from 2026.

Build your medication list, run 2027 formularies and pharmacy pricing in Medicare Plan Finder, check utilization management, then decide whether to change standalone Part D only or reconsider your entire Medicare Advantage plan. For a broader step-by-step guide to choosing Part D any time of year, see our Medicare Part D plan guide.

Formulary context: Part D costs before AEP. Regional ANOC hub: Southeast 2027 plan changes.

Many retirees open six Part D mailers in October and still never answer the first question: is your drug list the problem, or is your whole coverage path the problem? I hear this confusion on consult calls every week.

During AEP, the first question is whether you are changing only your drug coverage or reconsidering your entire Medicare Advantage plan. Someone on Original Medicare with Medigap whose doctors are stable but formulary tiers jumped needs standalone Part D shopping. Someone whose MA-PD plan lost their cardiologist needs medical network work first. Drug comparison alone will not fix a broken provider roster.

The goal is to figure out whether you need a new Part D plan, a different Medicare Advantage plan, or no change at all. I would not shop Part D from mailers alone. Enter the drug list in Plan Finder first, then compare paths. See also formulary change spikes, Part D penalty rules, and the AEP checklist.

How do I compare Part D plans during AEP?#

Start with your 2027 ANOC. Look for anything that changed from this year before you compare new plans. Then list every drug with dose and monthly fills, enter them in Medicare Plan Finder for your residential county, and compare estimated annual drug cost across three to five plan IDs: premium, deductible, tiers, pharmacy status, and prior authorization rules together.

Do not file the ANOC without reading it.

On both standalone Part D and MA-PD contracts, scan premium, deductible, and drug tiers first. Tier jumps often show up before the premium line moves.

Then read formulary changes, prior authorization, step therapy, and quantity limits for anything that touches your maintenance list. Confirm pharmacy network and preferred pharmacy updates, plus any coverage changes affecting your medications, because those rows feed the January 1, 2027 effective date on the contract you keep or replace.

Build the drug list from pill bottles, not memory. Include drug name, strength, quantity per fill, and how often you refill. Plan Finder uses that data to estimate annual cost on each 2027 plan ID in your county (Medicare Plan Finder). See also our Medicare guides hub, Medicare tools hub, and Medicare glossary.

Workflow I use on consult calls:

1. Gather every prescription.
2. Record drug name, strength, quantity, and frequency.
3. Enter the list in Medicare Plan Finder for your home ZIP.
4. Compare 2027 plans side by side on estimated annual drug cost.
5. Check tier placement, prior authorization, step therapy, and quantity limits on finalists.
6. Re-run pricing at your preferred pharmacy, a standard pharmacy if you use one, and mail order when you would actually use it.

Read your ANOC formulary change table before you assume the current plan still wins. Carriers move drugs between tiers every year. A plan that looked strong on drug cost in 2026 can land mid-pack in 2027 on the same ZIP code.

I compare at least three plan IDs every time: your renewing contract, the Plan Finder front-runner on estimated annual drug cost, and one middle option with a different pharmacy network design. Premium alone is a trap. A low-premium plan with a higher deductible and higher-tier maintenance drugs can cost more than a higher-premium plan with lower tiers at your usual pharmacy.

If you have employer or union coverage, check with the benefits administrator before making a Medicare or Part D change.

Should I compare Part D even if I have Medicare Advantage?#

Yes. Most Medicare Advantage plans bundle Part D (MA-PD). Your ANOC includes drug formulary changes even when the carrier name stays the same.

Original Medicare + Medigap: prescription coverage usually means comparing standalone Part D plans during AEP. Medical coverage stays on Medigap while the drug contract can swap January 1, 2027.

Medicare Advantage (MA-PD): the drug benefit is part of the Advantage contract. Changing drug coverage often means comparing the entire MA plan: medical network, cost sharing, supplemental benefits, and Part D together. MA-PD comparison is not simply a Part D comparison because those pieces are connected.

Bundled drug coverage means your ANOC carries a formulary section even if you chose Advantage for the medical network, not the pharmacy. Tier moves, step therapy additions, and quantity limits all apply to MA-PD contracts the same way they apply to standalone PDP plans.

You cannot keep your current Advantage plan and attach a separate Part D policy. Part D is either bundled inside your MA-PD contract or sold as a standalone plan alongside Original Medicare. If the bundled formulary deteriorates but the medical network still fits, your choices are: accept the tier changes, switch to another MA-PD with verified medical networks, or leave Advantage entirely for Original Medicare plus standalone Part D plus optional Medigap.

If you leave Medicare Advantage for Original Medicare, you may need medical underwriting to buy a Medigap policy unless you have a guaranteed-issue right or another protected enrollment situation. Drug frustration alone rarely justifies that path unless the medical side is broken too.

What drug list details matter most in Part D comparison?#

Enter every prescription with exact dose, quantity, and preferred pharmacy. Tier placement, step therapy, quantity limits, and preferred vs standard pharmacy pricing drive annual cost more than the monthly premium line.

The details that can change the comparison include tier number, prior authorization, step therapy, quantity limits, and whether your pharmacy is preferred or standard on that plan ID.

Compare estimated annual drug cost (not just premium): include deductible, tier copays or coinsurance, and pharmacy status. Run your list at the pharmacy you actually use. Mail-order vs retail pricing diverges on maintenance drugs. A 90-day mail supply may cost less than filling the same prescription at retail, depending on the plan and pharmacy. If you refuse mail-order, run retail pricing only and accept that your winner may differ from your neighbor's.

Specialty drugs and some brand-name drugs can carry higher tier placement or additional utilization requirements, depending on the plan. One tier move on a monthly specialty fill can exceed an entire year of premium savings from staying put.

Should I recheck my doctor and hospital network before the AEP deadline?#

Yes for MA-PD shoppers. Directory rows change even when the carrier logo on your card stays the same.

Part D comparison on MA-PD is never drug-only. If you switch Advantage plans for formulary savings, you must re-verify every must-keep physician, hospital campus, and specialist group on the new plan ID. Baptist Health, Piedmont, and WakeMed do not contract as one block across carriers.

Call billing with the 2027 contract year before December 7. A clean directory screenshot from October is not proof in January when claims reject.

Which AEP comparison path fits your situation?#

The table maps situations to enrollment types, not carrier winners. Know which kind of change you are making before you click enroll.

Common Part D comparison mistakes during AEP#

Comparing premiums without entering your drug list. Plan Finder exists for a reason. Use it.

Ignoring pharmacy network status. A plan cheap at CVS may cost more at your independent pharmacy on the same county roster.

Switching MA-PD without medical reverification. A lower drug cost does not help much if the new Advantage plan drops a doctor or hospital you need.

Waiting until December 6. Rejected enrollments need time to fix. Carrier queues back up the final week.

Choosing from the premium line alone after you already ran drugs. If two plans look close, re-check pharmacy pricing and utilization rules once more before December 7 locks January 2027 coverage.

Extra Help and LIS: compare with your subsidy tier#

Low-Income Subsidy (Extra Help) changes how Part D premiums and copays calculate on standalone PDP and MA-PD plans. If you qualify for Extra Help, make sure your current subsidy status is reflected when you compare plans so you are not comparing full-cost estimates with subsidized costs.

Do not assume last year's Plan Finder drug-cost leader stays in front after LIS tier adjustments. Formulary changes can push your maintenance drugs into cost-sharing bands that subsidy rules treat differently than full-pay beneficiaries see on the same plan.

Call 1-800-MEDICARE if subsidy status changed mid-year through Medicaid or SSA. Compare plans after confirming your current LIS level so you are not reading full-pay copays on a subsidized profile.

Standalone Part D vs. MA-PD: enrollment mechanics#

Standalone Part D changes during AEP do not require touching Medigap. Your supplement continues unchanged while the drug contract swaps January 1, 2027. In that situation, the medical coverage stays the same and only the drug plan changes.

MA-PD changes require full Advantage enrollment. Disenrolling from one MA-PD and joining another is one coordinated move, not a drug-only patch. If you leave MA-PD for standalone Part D plus Original Medicare, you are changing medical coverage too. Confirm you want that path before you drop the Advantage plan ID.

In Northwest Florida, I see two very different comparison situations. Someone with Medigap may only need to compare standalone Part D plans, while someone on Medicare Advantage has to consider the drug benefit and medical network together.

Next Steps#

Build your drug spreadsheet tonight. Run Plan Finder for your home county with your 2027 ANOC open beside you. If medical networks need review too, read verify doctor in-network before you finalize. For enrollment timing, see Medicare open enrollment 2026 dates. Schedule a consultation or call (850) 613-0057.

Licensed in Florida, Alabama, Georgia, and North Carolina. Independent, not tied to one carrier.

Plan availability, networks, drug formularies, and benefits vary by county and year. For all options in your area, contact Medicare.gov or 1-800-MEDICARE (TTY: 1-877-486-2048).