Every fall, Medicare Advantage and Part D plans get assigned a star rating from 1 to 5, and these ratings show up prominently when you compare plans. But what do they actually measure, and how much should they influence your decision? Here’s how to use star ratings the right way — as one useful data point, not the whole picture.
What Star Ratings Actually Measure
Medicare’s star rating system evaluates plans across several categories, which vary somewhat between Medicare Advantage and Part D plans but generally include things like: how members rate their overall experience with the plan, how well the plan manages chronic conditions, how responsive customer service is, complaints and appeals data, and specific quality measures like whether members received recommended screenings and vaccinations. Plans are rated annually, and the overall star rating is a composite of dozens of individual measures, not a single score.
A Higher Rating Doesn’t Guarantee It’s Right for You
This is the most important thing to understand: star ratings measure how a plan performs on average across its whole membership, not how it will perform for your specific situation. A 5-star plan with a network that doesn’t include your cardiologist isn’t a good fit for you personally, even though it’s objectively a strong-performing plan overall. Star ratings are a useful screen for plan quality, but they can’t tell you whether your specific doctors are in-network or whether your specific medications are well-covered.
The 5-Star Special Enrollment Period
One genuinely useful feature tied to star ratings: if a 5-star Medicare Advantage or Part D plan is available in your area, you generally have a one-time Special Enrollment Period each year to switch into it, even outside the normal enrollment windows. This can be a valuable option if a top-rated plan becomes available in your area and your current plan isn’t serving you well, though it’s still worth confirming network and formulary fit before making the switch, for the same reasons noted above.
How Ratings Can Change Year to Year
Star ratings aren’t fixed — a plan’s rating can go up or down from one year to the next based on updated performance data. A plan you chose partly because of a strong rating a few years ago may have a different rating now, which is one more reason annual plan review matters, even if you’re generally happy with your coverage. Checking your plan’s current rating during your annual review takes just a few minutes and can flag a meaningful shift you’d otherwise miss.
Low-Performing Plan Icons
On the other end, Medicare flags plans with consistently low ratings — generally below 3 stars for three consecutive years — with a low-performing icon on Medicare’s plan comparison tools. If your plan carries this designation, it’s worth taking seriously as a signal to review your options more closely, even if your personal experience with the plan has been fine so far.
How to Weigh Star Ratings Against Other Factors
A practical approach: use star ratings as a tiebreaker, not a starting filter. Build your plan shortlist based on your non-negotiables first — your doctors, your medications, your total cost picture — and then use star ratings to help choose between the remaining, genuinely comparable options. This keeps the rating in its proper role: a helpful quality signal, not the primary basis for a decision that also depends heavily on your personal healthcare needs.
Where to Check Current Ratings
Star ratings are published annually and are available through Medicare’s official plan comparison tools, along with detailed information on which specific categories a plan scores well or poorly in. Looking at the category breakdown, not just the overall star number, can tell you more about whether a plan’s strengths align with what matters most to you — for example, a plan that scores well on chronic condition management specifically, if that’s relevant to your situation.
If you’d like help interpreting star ratings alongside your specific needs, our post on comparing Medicare Advantage plans walks through a broader framework, and you can schedule time to review your options together.
Bottom Line
Star ratings are a legitimate, useful measure of overall plan quality, and they come with a real benefit in the form of the 5-star Special Enrollment Period. But they work best as a tiebreaker among plans that already fit your specific doctors, medications, and budget — not as the first or only factor in your decision.
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Have questions? Schedule a free review with Kayla Price, a licensed insurance agent at Price Services Group. Call 866-648-1578 or visit priceservicesgroup.com/schedule.