What ratings mean and where they come from

There is no single "highest rated" Medicare supplement company because different rating systems measure different things. The National Association of Insurance Commissioners (NAIC) tracks complaint rates. J.D. Power measures customer satisfaction. AM Best and Moody's rate financial strength. A company might have low complaints but mediocre satisfaction scores, or strong finances but slower claims processing.

When you search for ratings, you are usually seeing one of these four sources. NAIC complaint data is public and free. J.D. Power surveys actual customers about their experience. Financial ratings tell you whether the company can pay claims. Customer review sites like Trustpilot or Google aggregate individual experiences but are not regulated and can include fake reviews.

The most useful approach is to check complaint rates first (NAIC data), then look at financial strength (AM Best), then read what actual customers say about the specific plan you are considering. A company's overall rating matters less than how it performs on the plan you would buy.

Key Takeaways

  • NAIC complaint data is the most reliable public source for comparing how often customers report problems with each company.
  • Financial strength ratings from AM Best or Moody's tell you whether a company can pay your claims, but do not measure customer service quality.
  • J.D. Power customer satisfaction scores reflect actual policyholder experience but are based on surveys, not complaints filed with regulators.
  • The same company may have different ratings on different plans, so check ratings for the specific plan you are considering, not just the company name.
  • Complaint rates vary by state, so a company with low complaints in one state may have higher rates elsewhere.

How to find NAIC complaint data for your state

The NAIC publishes complaint ratios that show how many complaints each company received per 1,000 policies sold. This is the most standardized way to compare companies. You can access this data through your state insurance commissioner's office website, which usually has a link to NAIC reports or maintains its own complaint database.

To use NAIC data correctly, divide the total complaints by the number of policies in force, then multiply by 1,000. A company with 500 complaints and 100,000 policies has a ratio of 5 per 1,000. A company with 50 complaints and 5,000 policies also has a ratio of 10 per 1,000 — the smaller company actually has more complaints relative to its size. The ratio matters more than the raw number.

Complaint data lags by several months, so the most recent available is usually from the previous year. Check your state insurance commissioner's website first; if they do not maintain a searchable database, call their consumer services line and ask for the latest complaint ratio report for Medicare supplement companies in your state.

Financial strength ratings and what they tell you

AM Best and Moody's rate insurance companies on their ability to pay claims. These ratings do not measure customer service or how fast claims are processed — they measure solvency. An A+ rating from AM Best means the company has strong reserves and low risk of failure. A lower rating does not mean the company will fail, but it carries higher financial risk.

Most major Medicare supplement companies carry A or A+ ratings. If a company's rating drops below A-, that is a signal to investigate why. You can check AM Best ratings free on their website by company name. Moody's ratings are also public but require more navigation through their site.

Financial strength matters because if a company becomes insolvent, your state's insurance guaranty fund may cover claims up to a limit (usually $300,000 to $500,000 per claim, varying by state). This protection exists, but it is better not to need it. If you are comparing two companies and one has a significantly lower financial rating, that is worth asking about before you buy.

J.D. Power customer satisfaction scores

J.D. Power conducts annual surveys of Medicare supplement customers and publishes satisfaction scores. These scores reflect how customers rate their experience with claims, customer service, and billing. The survey is voluntary, so companies with very low satisfaction may not participate, which can skew the results.

J.D. Power scores range from around 700 to 850 on a 1,000-point scale. A score above 800 is considered good. The survey asks about specific experiences — whether claims were paid on time, whether customer service was helpful, whether the bill was clear. This is different from complaint data, which only captures people who filed a formal complaint.

You can view J.D. Power Medicare supplement rankings on their website, though some detailed results require a subscription. The free version usually shows overall rankings and top performers by region. Keep in mind that satisfaction scores reflect the experience of people who responded to a survey, not all customers.

Companies that consistently appear in top ratings

Across NAIC complaint data, financial strength ratings, and J.D. Power surveys, certain companies appear repeatedly in the top tier. United Healthcare, AARP (underwritten by UnitedHealthcare), Humana, Cigna, and Anthem are among the largest and most frequently rated well. Smaller regional companies like Physicians Mutual and Security National also appear in top complaint-ratio rankings in their service areas.

Size matters here. Larger companies have more resources for customer service and claims processing, but they also have more total complaints because they have more customers. A company with 10,000 complaints and 2 million policies may have a better complaint ratio than a smaller company with 100 complaints and 15,000 policies. Always look at the ratio, not the raw number.

The companies that perform well tend to have invested in digital claims submission, clear billing, and accessible customer service. They also tend to have higher premiums than smaller or newer companies. There is usually a trade-off between price and service quality, though not always.

What to do if a company has poor ratings

If you are considering a company with a high complaint ratio or low financial rating, ask your insurance agent or the company directly what the complaints were about. Some complaints are about billing disputes that were resolved. Others reflect systemic problems with claims processing. The nature of the complaints matters as much as the count.

You can request a copy of the company's complaint file from your state insurance commissioner. This file usually includes summaries of complaints and how they were resolved. It takes a few days to receive, but it gives you specific information about what went wrong for other customers.

If you have already bought a policy from a company with poor ratings and you are unhappy with your experience, you can file a complaint with your state insurance commissioner. This creates a record and may trigger an investigation if multiple complaints point to the same problem. You can also switch to a different company during the annual open enrollment period (October 15 to December 7) without penalty.

How ratings change and why you should check again

Company ratings shift year to year. A company might have excellent ratings one year and poor ones the next if there is a major service disruption, a leadership change, or a surge in complaints about a specific issue. NAIC data is updated annually. J.D. Power surveys are published each year. Financial ratings can change if a company's reserves decline or if there is a merger.

If you have held a Medicare supplement policy for several years, it is worth checking the current ratings of your company and comparing them to competitors. You are not locked into your current company. You can switch during open enrollment or, in some cases, if you have a may have access to life event. Ratings from three years ago do not predict current performance.

Set a reminder to check ratings every two years, or whenever you receive a premium increase notice. A significant rate hike combined with declining ratings might be a signal to shop around. Conversely, a company with improving ratings and stable premiums is probably a good choice to stay with.

Frequently Asked Questions

Can I switch Medicare supplement companies if I am unhappy with my current one?

Yes, during the annual open enrollment period (October 15 to December 7) you can switch to any other company without medical underwriting. Outside that window, you may face medical underwriting or waiting periods for pre-existing conditions, depending on your state and how long you have held your current policy. Some states allow switching without underwriting if you have held a policy for a certain length of time.

What is the difference between a complaint ratio and a satisfaction score?

A complaint ratio is the number of formal complaints filed with regulators per 1,000 policies. A satisfaction score is based on surveys of customers who voluntarily answered questions about their experience. Complaint data is more objective but only captures people who filed a formal complaint. Satisfaction scores reflect broader experience but depend on who responds to the survey.

Does a high financial strength rating mean the company will never raise my premiums?

No. Financial strength rating measures solvency, not pricing strategy. A company with an A+ rating can still raise premiums if claims costs increase or if the company decides to increase profits. Premium increases are regulated by state insurance commissioners, but they are not prevented by high financial ratings.

Should I choose the company with the lowest complaint ratio even if the premiums are higher?

Not necessarily. A low complaint ratio is valuable, but it does not mean the company is the best choice for you. Compare premiums, coverage options, and whether the company's service area includes your doctors and hospitals. A company with slightly higher complaints but significantly lower premiums and better coverage for your needs might be the better choice.

Where can I find ratings for Medicare supplement companies in my specific state?

Start with your state insurance commissioner's website, which usually has complaint data and links to NAIC reports. You can also visit the NAIC website directly and search by state. For J.D. Power scores, go to their website and select Medicare supplement rankings. For financial strength ratings, visit AM Best's website and search by company name.