A Medicare plan can look appealing in a brochure and still be a poor fit if your doctor is out of network or a prescription is priced unexpectedly. That is why learning how to use Medicare Star Ratings can be helpful – as long as you treat them as one part of the decision, not the whole decision.
Medicare Star Ratings give you a quick look at how Medicare Advantage and Part D prescription drug plans have performed in areas such as member experience, customer service, preventive care, and medication safety. A higher rating can signal a plan that has served its members well. But the plan that will work for you still needs to fit your personal doctors, prescriptions, health needs, and budget.
What Medicare Star Ratings Measure
The Centers for Medicare & Medicaid Services, often called CMS, assigns Medicare Advantage and Part D plans a rating from 1 to 5 stars. Five stars is the highest rating. Medicare updates these ratings each year, generally in the fall, so they can help people compare plans during Medicare’s Annual Enrollment Period.
For Medicare Advantage plans, the rating reflects many measures, including how members rate their care and customer service, whether the plan helps members receive screenings and preventive services, how well chronic conditions are managed, and how often members have problems getting needed care. Prescription drug plans are also evaluated on items such as customer service, member complaints, drug safety, and the accuracy of information provided to Medicare.
These ratings are based on real plan performance data, member surveys, and Medicare records. That makes them useful. They are more meaningful than a flashy advertisement or a sales pitch that focuses on one extra benefit.
Still, a rating does not tell the whole story. It cannot tell you whether your cardiologist in Des Moines is in the plan’s network, whether your specific inhaler is covered at a reasonable cost, or whether the plan’s hospital network is convenient for your family. Those details deserve equal attention.
How to Use Medicare Star Ratings in a Plan Comparison
Start by looking at the overall star rating. In general, a plan with 4 or 5 stars has demonstrated stronger performance than a plan with fewer stars. If two plans appear similar in cost, provider access, and drug coverage, the star rating can be a useful tie-breaker.
Then look beyond the overall number. Medicare may show ratings for separate areas, such as member experience, customer service, and staying healthy. A plan’s overall score is helpful, but the categories may reveal what is driving that score. For example, someone who values easy access to help when a bill or claim is confusing may pay close attention to customer service performance.
It also helps to compare plans available in your county, not plans advertised broadly on television. Medicare Advantage and Part D availability, networks, premiums, and formularies can differ by location. A plan rated highly in one area may not be offered where you live, and a highly rated plan that is available may not include the providers you want to see.
Think of Star Ratings as a quality checkpoint. First confirm that a plan handles the practical details of your healthcare. Then use the rating to better understand how the plan has performed for its members over time.
Check your doctors and hospitals first
For many people, provider access is the first question. With a Medicare Advantage plan, you need to understand whether your current doctors, specialists, preferred hospital, and clinics participate in the network. You should also ask how referrals work and whether seeing an out-of-network provider is covered in a non-emergency situation.
A 5-star plan may be impressive, but it may not work well if it requires you to leave trusted physicians or travel farther for care. On the other hand, a plan with a slightly lower rating may have the local provider network that makes more sense for you. There is no single right answer for everyone.
Run your prescription list through the plan
Prescription coverage can change from year to year. Do not assume that because a plan covered your medications last year, it will cover them the same way next year. Each Part D plan and Medicare Advantage plan with drug coverage has a formulary, which is its list of covered medications.
Check whether every prescription is covered, what tier it is on, whether prior authorization or step therapy applies, and what you could pay at your preferred pharmacy. The premium alone does not show the full picture. A lower premium can sometimes come with higher costs for the medications you take regularly.
Star Ratings can tell you something about a drug plan’s service and safety performance, but they do not replace a personalized drug comparison. Your medication list is personal. It should be reviewed that way.
Compare total costs, not just the monthly premium
A plan with a $0 premium may still involve copays, coinsurance, deductibles, and other out-of-pocket costs when you use care. Review the plan’s maximum out-of-pocket limit for medical services, specialist visit costs, hospital costs, diagnostic testing, and any services you expect to use.
This is where your health situation matters. A person who rarely sees a doctor may weigh costs differently from someone managing diabetes, heart disease, or a planned surgery. Star Ratings can help you assess plan quality, but they cannot predict your individual healthcare spending.
What a High Star Rating Does Not Guarantee
A high rating is a positive sign, not a promise. Ratings look at plan performance across a large group of members and over a period of time. Your own experience may differ based on the providers you use, the care you need, and changes the plan makes for the coming year.
Ratings also may not capture the features you care about most. One person may want strong dental or vision allowances. Another may care more about transportation, a particular hospital system, or predictable specialist copays. Those priorities are valid, even when they are not fully reflected in a star score.
Be cautious about making a quick switch based only on a plan’s rating or a new benefit advertised in the mail. Before changing coverage, compare the plan’s Evidence of Coverage and Annual Notice of Change with your current plan. Pay attention to network changes, prescription changes, and shifts in cost-sharing.
Medicare Star Ratings and Medicare Supplement Plans
Medicare Star Ratings apply to Medicare Advantage and Part D drug plans. They do not apply to Medicare Supplement insurance, also called Medigap.
Medicare Supplement plans work differently. These plans help pay certain out-of-pocket costs left by Original Medicare, and standardized plan benefits are set by the federal government. For example, a Plan G from one company provides the same core standardized benefits as a Plan G from another company. The differences often come down to premium, rate history, company service, underwriting rules, and how the policy fits alongside a separate Part D plan.
If you are considering Original Medicare with a supplement, use a different comparison process. Look closely at the monthly cost, the insurance company’s history and service reputation, your ability to see providers who accept Medicare, and the Part D plan that fits your prescription needs.
When to Pay Extra Attention to Star Ratings
Star Ratings can be especially useful during Annual Enrollment, which runs from October 15 through December 7. That is when many Medicare beneficiaries review Medicare Advantage and Part D coverage for the following year. Plans can change their premiums, drug formularies, networks, and benefits annually, so a review is worthwhile even if you have been comfortable with your coverage.
They can also help when you are choosing Medicare coverage for the first time. If you are turning 65 or retiring and losing employer coverage, it is easy to feel buried in plan materials. A rating gives you one reliable data point while you work through the larger questions.
There is one special situation to understand: people enrolled in a Medicare Advantage or Part D plan with a 5-star rating may have a one-time opportunity to change to another 5-star plan during much of the year, if one is available in their area. The rules are specific, and availability varies, so it is wise to confirm whether that option applies before making a move.
Put the Rating in Its Proper Place
A practical way to compare coverage is to put your priorities in this order: confirm your doctors and hospitals, review every prescription, estimate your total costs, understand the plan rules, and then consider Star Ratings as a measure of plan performance. That order keeps a strong rating from distracting you from the details that affect your daily care.
You do not have to sort through those details alone. A no-pressure conversation with an independent Medicare advisor can help you compare the plans available to you without treating a star rating as the final word. At Kelderman Insurance, the goal is simple: clear answers, a careful comparison, and coverage you can feel confident using when you need it.