Medicare Plan Finder Tool 2027: How to Compare Plans Step by Step

Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) — Last updated September 20, 2026

The Medicare Plan Finder is the official comparison tool on Medicare.gov, and for most people it is the only place that shows every Medicare Advantage plan sold in their county side by side. It is genuinely useful. It is also the single most common source of Medicare buyer’s remorse, because the way most people use it produces a confident-looking answer to the wrong question.

This guide covers what the tool does for the 2027 plan year, when the 2027 data actually appears, the handful of settings that change your results more than anything else, and the gaps the tool leaves that you have to close yourself before you enroll.

Plan information for 2027 becomes viewable in the Plan Finder on October 1, 2026. Before that date, everything the tool shows you is a 2026 plan, with 2026 premiums, 2026 drug tiers and 2026 networks. Pricing a plan in August tells you very little about what that plan will cost you in January.

The 2027 Star Ratings publish separately, in early October, and load into the tool at roughly the same time. Until they do, the star numbers you see next to each plan are the 2026 ratings. If you are shopping in the first days of October it is worth checking whether the ratings shown are current, because a plan’s rating can move a full star between years.

The Plan Finder is only as good as what you put into it, and almost everyone starts without the information that makes the results meaningful. Ten minutes of preparation changes the quality of the answer more than an hour of clicking.

• Your Medicare number, if you want the tool to pull your current plan and drug list automatically. This is optional but it saves real time.
• Every prescription you take, with the dose and how many you get per fill. Not just the drug names.
• The pharmacy you actually use, by name and location. The same plan prices differently at different pharmacies.
• The names of your doctors and any specialists you see regularly, for the network check you will do afterward.
• Your ZIP code, and the county if your ZIP crosses a county line. Plan availability is set at the county level.

That last point catches people out. Some ZIP codes span two counties, and the plans available on one side of the line may not be available on the other. If the tool asks you to choose a county, the choice matters.

Most people who already have a Medicare Advantage plan never open the Plan Finder again after the year they enrolled. That is the single most expensive habit in Medicare, because plans are not static. Premiums move, drug tiers get reshuffled, networks lose hospitals and benefits get trimmed, and none of it requires your consent. A plan that was the right answer two years ago may not be the right answer now, and the only way to find out is to look.

Your plan is required to send you an Annual Notice of Change by September 30 each year, spelling out what is different about your coverage for the coming year. It arrives in a thick envelope that most people put on the counter and never open. Open it. Then take the changes it describes and check them against what else is available in your county.

Doing nothing is a decision. If you take no action during enrollment, you are automatically kept in your current plan under its new terms for the coming year, whatever those terms turn out to be. Twenty minutes in the Plan Finder each October is what turns that from a default into a choice.

Two people in the same ZIP code can pull completely different plan lists out of the same tool. These are the inputs responsible.

The tool is accurate about what it covers. The difficulty is how much sits outside it, and every gap below is something people tend to discover only after they have already enrolled.

The Plan Finder has been rebuilt more than once and it still frustrates people every October. Most of the frustration comes from a handful of predictable places, and knowing them in advance turns a wasted afternoon into a manageable task.

None of this makes the tool unusable. It does mean treating its output as a well informed first draft rather than a verdict, which is the right posture for any comparison tool covering forty plans you have never heard of.

The Plan Finder handles the general case well and specialized situations poorly. A few circumstances need more than the tool can give you.

• If you have both Medicare and Medicaid, or a chronic condition a plan is built around, a Special Needs Plan may fit better than anything the standard comparison surfaces.
• If you travel, spend part of the year in another state, or want out of network flexibility, compare Medicare Advantage PPO plans specifically rather than filtering on price alone.
• If you are weighing carriers rather than individual plans, our roundup of the best Medicare Advantage plans for 2027 compares the national carriers on ratings, networks and cost structure.
• If you are new to Medicare Advantage entirely, start with our overview of Medicare Advantage plans for 2027 before opening the tool at all.

A shortlist is not a decision, and the gap between the two is where most of the real work sits. Once the Plan Finder has narrowed things down, four steps close it out.

• Call your doctors. Name the exact plan and ask whether they take it for the coming year and whether they are accepting patients under it. This is the call that prevents the most regret, and it takes five minutes per office.
• Check the hospital, not just the doctor. Networks can include your primary care physician while excluding the hospital system they admit to. Ask which hospitals the plan contracts with in your area.
• Read the Summary of Benefits for the maximum out of pocket. Premiums and copays are what you notice monthly. The out of pocket maximum is what matters in the year something goes seriously wrong.
• Ask about prior authorization for anything you rely on. If you have a regular specialist, an infusion, imaging or durable medical equipment, ask the plan directly whether it requires approval first and how long decisions take.

Enrollment itself can be done through the Plan Finder, directly with the carrier, or through a licensed broker. The cost to you is identical in all three cases, because commissions are paid by the carrier and are set by federal rules rather than by which door you walk through. What differs is how much of the verification work above someone does on your behalf.