Medicare Star Ratings 2027: How Houston Should Judge an Advantage Plan Before AEP

Every fall, as the Houston heat finally starts to break and the AEP mailers pile up on kitchen tables from Katy to Clear Lake, you are handed a decision that shapes an entire year of your health care: which Medicare Advantage plan to carry into January. The brochures all look reassuring. The premiums look manageable. The extra benefits — dental, vision, a grocery card — look generous. What almost none of that glossy paper tells you plainly is whether the plan actually delivers good care, answers the phone when you call, gets your prescriptions right, and keeps its members healthy. There is, however, a single government scorecard built to answer exactly that question, and it is sitting right there on the Medicare Plan Finder next to every plan: the Star Rating.

The Centers for Medicare & Medicaid Services (CMS) rates every Medicare Advantage (MA) and Part D drug plan on a scale of 1 to 5 stars, refreshes those ratings each fall, and displays them during the Annual Enrollment Period (AEP, October 15–December 7). The set released in October 2026 — the “2027 Star Ratings” — is the one you will see when you shop for coverage that begins January 1, 2027. Used well, these stars are one of the most honest quality signals in all of Medicare. Used carelessly, they can be misleading, because a 5-star plan is not automatically the right plan for your doctors and your medications. This guide, written for Houston and Harris County beneficiaries getting ready for AEP, explains what the stars measure, how they are built, what “high” and “low-performing” really mean, the special 5-star enrollment right almost no one uses, and how Wise Insurance Agency reads ratings alongside your own care to help you choose. Start anytime at our Medicare hub.

1. What a Medicare Star Rating actually measures

A Star Rating is CMS’s answer to a simple question that every Houston beneficiary deserves to ask before enrolling: Is this plan any good at the things a health plan is supposed to do? Rather than leave you guessing, CMS scores each Medicare Advantage and Part D contract on dozens of specific quality and performance measures, then rolls them up into an overall rating from 1 to 5 stars (in half-star increments). Five stars means excellent; one star means poor. A plan that keeps its members healthy, answers the phone quickly, resolves complaints, and gets prescriptions right earns high marks; a plan that generates complaints, drops the ball on preventive care, or mishandles drug safety does not.

Crucially, the rating is not a measure of how low a plan’s premium is, how big its provider directory looks, or how attractive its dental benefit sounds. Those things matter, but they are not what the stars capture. The stars capture quality and member experience — the parts of a plan you usually only discover after you have been a member for a year. That is what makes them so valuable at enrollment time: they let you learn from the experience of hundreds of thousands of current members before you sign anything.

2. The 2027 Star Ratings: timing and the year framing

The single most confusing thing about Star Ratings is the year label, so let us be precise. CMS releases each new set of ratings in the fall, just before the Annual Enrollment Period begins. The ratings released in October 2026 are named the “2027 Star Ratings” — the year refers to the plan year the ratings apply to, not the year they were published. Those are the ratings displayed on Medicare Plan Finder during the AEP that runs October 15 through December 7, 2026, for coverage that begins January 1, 2027.

So when you sit down to compare plans this fall, the star number attached to each plan is the 2027 rating — the freshest measure of that plan’s quality available. Behind the scenes, CMS finalized how these ratings work in the Contract Year 2027 Medicare Advantage and Part D final rule, issued April 2, 2026. Among other changes, CMS streamlined the measure set by removing 11 measures focused on administrative processes and areas where plans no longer meaningfully differ, and set the weight of the CAHPS member-experience measures at 3 for the 2027 Star Ratings.

3. How the stars are built — the five domains and weighting

The overall star number looks simple, but it is assembled from dozens of individual measures grouped into broad categories, or domains. Understanding those domains helps you see why a plan earned its rating — and whether the reasons matter to you. For a Medicare Advantage plan with drug coverage, the measures fall into roughly these families:

• Staying healthy (clinical quality / HEDIS): Are members getting recommended screenings, vaccines, and preventive tests? These come largely from HEDIS clinical data.
• Managing chronic conditions: How well does the plan help members control diabetes, blood pressure, and other long-term conditions?
• Member experience (CAHPS surveys): What do members themselves say about getting care, getting appointments, and their overall satisfaction? This comes from the annual CAHPS survey.
• Member complaints and plan performance: How often do members file complaints or leave the plan, and is the plan improving or declining?
• Customer service: How well does the plan handle calls, appeals, and requests?
• Drug safety and pricing accuracy (Part D): Does the plan manage medications safely — for example, appropriate use of certain drugs — and price them accurately?

Not every measure counts equally. CMS assigns each measure a weight, so that the things that matter most to beneficiaries move the overall score the most. In broad terms, routine process measures carry a weight of 1, member-experience (CAHPS) measures carry a weight of 3 for the 2027 Star Ratings, outcome and intermediate-outcome measures carry a weight of 3, and improvement measures carry a weight of 5. The practical takeaway: what members actually experience — and whether the plan produces good health outcomes — drives the rating far more than paperwork does.

Member experience deserves special attention. Over recent years, CMS has repeatedly adjusted how heavily the CAHPS member-experience survey counts — a signal of how seriously the agency takes what members actually report. For the 2027 Star Ratings, those CAHPS measures carry a weight of 3, meaning a plan that frustrates its members on the phone or at the appointment desk cannot hide behind good paperwork. That is good news for you: it means the rating reflects the lived experience of people already in the plan.

4. “High” vs. “low-performing”: what the numbers mean

Not all stars are created equal, and CMS gives you two shortcuts for reading them quickly. At the top, plans rated 4 stars or higher are generally considered high-performing — they meet CMS’s bar for above-average quality, and they qualify for quality bonus payments that many plans reinvest into richer benefits. A 5-star plan is the highest rating CMS awards, and it comes with a special enrollment right we cover in the next section.

To give you a sense of scale: for the 2025 Star Ratings, CMS reported that about 40% of MA-PD contracts earned 4 stars or higher, but because higher-rated plans tend to be larger, roughly 62% of MA-PD enrollees were in contracts rated 4 stars or higher. In other words, most people who look for a highly rated plan can find one where they live — and Harris County, with its dense and competitive Medicare market, is no exception.

At the bottom of the scale is a warning you should never ignore. CMS marks certain plans with a low-performing icon — a caution symbol on Medicare Plan Finder — for any contract that scored a summary rating of fewer than 3 stars for 3 consecutive years. This is not a one-bad-year fluke; it is a plan that has struggled with quality year after year. Federal rules (42 C.F.R. §§ 422.510 and 423.509) even give CMS authority to terminate a plan’s contract after three straight years below 3 stars. If you see that icon next to a plan, treat it as a stop sign.

5. The 5-star Special Enrollment Period

Here is a right most Houston beneficiaries have never heard of, and it exists only because of Star Ratings. Normally you can only change your Medicare Advantage or Part D plan during set windows — the fall AEP, or the Medicare Advantage Open Enrollment Period from January through March. But CMS created a special reward for top quality: if a 5-star Medicare Advantage plan, Part D drug plan, or Medicare Cost Plan is available in your area, you can use the 5-star Special Enrollment Period (SEP) to switch into it outside the normal windows.

Per Medicare.gov, you can use this SEP once between December 8 and November 30 the following year to move to a plan with an overall 5-star quality rating. For the 2027 Star Ratings released in October 2026, that window runs December 8, 2026 through November 30, 2027. It is a genuinely useful tool: if a 5-star plan opens up where you live, you are not locked out until next fall — you can move to it during most of the year.

There is one trap to avoid, and it is exactly the kind of detail we watch for. If you move from a Medicare Advantage plan that includes drug coverage to a 5-star Medicare Advantage plan that does not, you can lose your prescription drug coverage — and you may have to wait until your next enrollment opportunity to get it back, and possibly owe a Part D late-enrollment penalty. That is why using the 5-star SEP is not a step to take on a whim; it is a step to take with a clear-eyed look at whether the 5-star plan actually covers your drugs and doctors.

6. Why last year’s stars matter for this year’s choice

A fair question: if the 2027 Star Ratings are based on data a plan generated in prior years, why should a rating from the past guide a decision about the future? The answer is that quality is sticky. A plan that has invested in good customer service, strong provider relationships, and effective care management does not usually reinvent itself overnight, and a plan that has struggled tends to keep struggling. That is precisely why CMS built a three-year lookback into the low-performing icon — consistent patterns, not single years, are what tell the real story.

So the stars you see this AEP are the strongest available predictor of the service you can expect next year: how easily you will get an appointment, whether your appeals will be handled promptly, whether the plan will help you stay on top of a chronic condition. They are not a guarantee — ratings can rise or fall — but for a decision you have to make now, with imperfect information, a plan’s track record is far more trustworthy than a brochure’s promises. Confirm your Medicare eligibility and enrollment timing first, then let the stars help you sort what is left.

7. Why stars are a starting point, not the whole answer

Now the honest part that the star number alone will never tell you: a 5-star plan is not automatically the right plan for you. The rating measures a plan’s overall quality across its entire membership. It does not know whether your cardiologist at the Texas Medical Center is in that plan’s network, whether your specific insulin or blood thinner sits on its formulary at an affordable tier, or whether the plan’s pharmacy network includes the H-E-B or CVS you actually use. A brilliantly rated plan that does not cover your doctor or your drug is, for you, the wrong plan.

This is where the stars become one input among several rather than the final word. The right way to use a Star Rating is as a quality filter: start by favoring higher-rated plans and steering clear of the low-performing icon, then run the finalists through the questions that are personal to you. Which plan keeps your doctors in network? Which covers your prescriptions at the lowest total cost? Which fits how you actually use care — travel, specialists, hospital preferences? A high star rating tells you a plan is likely to treat you well; your own doctors and drugs tell you whether it will treat you at all.

8. How Wise Insurance Agency uses ratings in Houston

Here is exactly how we put all of this together for Houston and Harris County beneficiaries every AEP. We do not hand you a list of 5-star plans and wish you luck. We start with the 2027 Star Ratings as a quality screen — favoring 4-and-5-star Medicare Advantage plans and flagging anything carrying the low-performing icon — and then we do the personal work the stars cannot: we load your actual doctors and your actual prescriptions into the comparison and see which highly rated plans truly fit your life.

That means checking whether your primary care physician and specialists are in each plan’s network, confirming your medications are covered at a tier you can afford, and looking at your total expected cost for the year — not just the premium. If a 5-star plan fits, wonderful; if a 4-star plan fits your doctors and drugs better than a 5-star plan that does not, we will tell you so plainly. And if the 5-star Special Enrollment Period is a live option for you, we make sure you use it without accidentally dropping your drug coverage. Explore your Medicare plan options, compare with a Medicare Supplement approach if Original Medicare fits you better, or reach us through our contact page or by email at sara@wisehealthins.com.

Frequently asked questions

Wise Insurance Agency is a licensed insurance agency in the State of Texas. The information here is general guidance and not a substitute for plan-specific advice. We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov, 1-800-MEDICARE, or your local State Health Insurance Assistance Program (SHIP) to get information on all of your options. Star Ratings, measures, weights, enrollment windows, and program rules change and are subject to federal action; the ratings framework, dates, and figures in this article reflect CMS and Medicare.gov guidance for the 2027 Star Ratings (released October 2026) and the most recent published Star Ratings data as of the date it was written. Verify current ratings and rules on Medicare Plan Finder, with CMS, or with a licensed agent before making any decision.