Comparing Medicare Advantage and Part D prescription drug plans can mean sorting through dozens of options in a single ZIP code, each with its own premium, copays, drug coverage, and provider network. Medicare’s free comparison tool, the Medicare Plan Finder, is built to make that easier, but it only works well if you know how to use it.
This guide walks through the tool step by step: what to have ready before you start, how to enter your information, and the common mistakes that can lead someone toward a plan that looks affordable on the surface but costs more over the course of a year. For help deciding between plans once you have results in hand, Senioridy’s guide to choosing and switching Medicare Advantage plans covers that next step in more depth.
What Is the Medicare Plan Finder
The Medicare Plan Finder is the official online tool built and maintained by the Centers for Medicare & Medicaid Services (CMS). It lets you compare Original Medicare, Medicare Advantage (MA) plans, and Part D prescription drug plans side by side, using your ZIP code, your actual medications, and your actual doctors. It’s free, government-run, and doesn’t require an account just to browse.
The tool is only as useful as the information entered into it. A search done without a medication list or provider information will generally return premiums and star ratings, but it won’t show the real cost picture for the specific plan a person would actually use.
Before You Start: What to Have Ready
Gathering a few things ahead of time makes the search faster and far more accurate:
- Medicare number, if already enrolled (found on the red, white, and blue Medicare card)
- ZIP code for the address where the person lives
- A complete list of current medications, including dosage and how often each is taken
- The names of doctors, specialists, and hospitals used regularly
- The preferred pharmacy, or pharmacies, used for prescriptions
- Current plan details, if the goal is comparing against an existing Medicare Advantage or Part D plan
Step-by-Step: Using the Tool
Step 1: Start the Search at Medicare.gov
Go directly to Medicare.gov rather than a search engine result or a third-party site made to look like it. The official tool is the only place tied directly to CMS’s current plan data. From the homepage, look for the option to find health and drug plans.
Step 2: Enter Location and Medicare Details
The tool will ask for a ZIP code and some basic information about current Medicare coverage: whether the person already has Medicare, has a Medicare number handy, or is searching ahead of turning 65. Answering accurately here affects which plans show up as available.
Step 3: Add Medications
This step is easy to skip and probably the single most important one for accuracy. Entering every medication, including dosage and frequency, lets the tool estimate actual out-of-pocket drug costs under each plan rather than just showing the monthly premium. Two plans with identical premiums can produce very different annual costs once a person’s specific prescriptions are factored in.
Step 4: Add Doctors, Hospitals, and Pharmacies
Searching by provider name shows whether a specific doctor, specialist, or hospital is in a plan’s network. As of 2026, Medicare Plan Finder includes Medicare Advantage provider network information directly in the results for many plans, a feature that wasn’t previously available on the tool itself. Adding a preferred pharmacy at this step also helps the tool estimate prescription costs more precisely, since some plans offer lower copays at preferred pharmacy networks.
Step 5: Compare Plans Side by Side
The results page typically lists dozens of plans by estimated annual cost. Selecting two or three plans for a side-by-side comparison makes it easier to see differences in premium, deductible, drug coverage tiers, and out-of-pocket maximum in one view, rather than clicking between plans one at a time.
Step 6: Check Star Ratings and Extra Benefits
Each Medicare Advantage plan carries a CMS star rating from 1 to 5, based on quality measures like preventive care, chronic disease management, and member experience. The tool also displays supplemental benefits, extras like dental, vision, hearing, or fitness programs that go beyond what Original Medicare covers. As of 2026, this supplemental benefits display shows more detail than in past years, including cost-sharing and any limits that apply.
What’s New for 2026
CMS made several changes to the Medicare Plan Finder for the 2026 plan year that are worth knowing about before searching:
- Provider network data. For the first time, many Medicare Advantage plans display in-network provider information directly in the tool, rather than requiring a separate visit to each plan’s own website.
- Expanded supplemental benefits detail. Instead of a simple “some coverage / no coverage” label, the tool now shows cost-sharing, authorization requirements, and plan limits for a wider range of supplemental benefits.
- A new drug search feature. CMS has been rolling out a separate, more personalized drug cost search tool on Medicare.gov to help people find lower-cost pharmacy options for their specific medications.
Details on these updates are available directly from CMS’s technical guidance on the Plan Finder rollout.
Common Mistakes That Lead to the Wrong Plan
- Comparing premiums alone. A low or $0 premium doesn’t mean a plan is inexpensive overall. Copays, deductibles, and drug costs can add up to far more over a year.
- Leaving out medications. Skipping this step means the tool can’t estimate real drug costs, which are often the biggest variable between plans.
- Not confirming the plan year. The tool defaults to the current plan year, but during the transition period around fall enrollment, it’s easy to accidentally be looking at the wrong year’s data. Checking the year shown on the results screen avoids that mix-up.
- Assuming network status without double-checking. Provider directory data is improving, but it isn’t perfect for every plan yet. Calling the doctor’s office directly to confirm they accept a specific plan is a reasonable extra step before enrolling.
- Waiting until the last few days of an enrollment window. Rushed comparisons tend to skip steps like the medication and provider search that make the results meaningful.
When to Use This Tool
The Medicare Plan Finder is available year-round, but changing plans is generally only possible during specific enrollment windows, including the Annual Enrollment Period each fall, a one-time switch window early in the year for people already in a Medicare Advantage plan, the seven-month window around first becoming eligible for Medicare, and certain Special Enrollment Periods triggered by qualifying life events. Senioridy’s guide to choosing and switching Medicare Advantage plans covers these windows and when each one applies in more detail. Even outside an active enrollment window, using the tool ahead of time to research options can make the actual decision faster once a window opens.
Getting Help If You Want It
The Plan Finder provides the data, but it doesn’t offer personalized guidance. For free, unbiased help working through the results, a State Health Insurance Assistance Program (SHIP) counselor can walk through options over the phone or in person at no cost. Find a local SHIP counselor at shiphelp.org.
Whatever plan a family ultimately chooses, having the right care providers in place matters just as much as understanding the coverage. Search Senioridy’s in-home senior care directory or skilled nursing facility directory to find providers in your area.
This article is for informational purposes only and does not constitute legal, financial, or medical advice. Medicare Advantage and Part D plan details, costs, and availability are set by CMS and individual insurers and are subject to change. For free, personalized Medicare guidance, contact your State Health Insurance Assistance Program (SHIP) counselor at shiphelp.org, available in every state at no cost. Always confirm current plan details directly with Medicare.gov or the plan itself before enrolling.