Top 11 Supplemental Insurance Companies

Medicare supplement plans, also known as Medigap plans, are sold through private insurance companies to cover gaps in your Medicare coverage. While choosing the right Medigap plan for you may feel daunting, it’s helpful to note that these plans are standardized across most states. This means that despite the variety of supplemental insurance companies, the benefits attached to those plans will always be constant. While the benefits remain constant, however, the rates and customer experience can differ across private insurance companies.

What To Look For In The Best Medigap Companies

When looking for the best Medicare supplemental insurance company for you, you’ll want to consider things like the company’s financial security, insurance premiums, rate increase history, customer service quality, and overall reputation. You’ll also want to know if they offer the specific plan you’re looking for and operate in the state in which you live.

Top 11 Companies

Here are some of the most reputable supplemental insurance companies on the market today. We hope this information helps you pick the right company for your needs. If you need further assistance, you can schedule an agent call or complete a brief survey to receive a FREE Medigap premium comparison report for your area and preferred plans.

* NOTE: The following is not a complete list of all supplemental insurance companies. Your comparison report will be tailored to your specific plan and area. We work to recommend the best companies and premiums for your specific needs.

United Health Care (AARP)

United Health Care (AARP) is perhaps the most widely known Medigap insurance company, offering some of the most popular Medigap plans in the country. When it comes to rates, they tend to be more middle-of-the-road to expensive. Their unique United Healthcare Medicare Supplement plans are available exclusively to AARP members.

Plans offered: A, B, C, F, G, K, L, N

Mutual of Omaha

Mutual of Omaha has handled the Medicare system since the beginning, and has extensive experience with Medigap plans. Mutual of Omaha comprises subsidiary companies like United of Omaha, and currently has an AA-rating by A.M. Best. They offer several benefits including a 12 percent household discount, no policy fees, guaranteed renewable and a 30-day look period. They’re known for the unique and exclusive benefits they offer to their customers.

Plans offered: A, F, G, N


Aetna has been in the Medicare supplement business for over a decade, and has an A rating with A.M. Best. Aetna offers discounts for fitness programs, as well as a household discount, which can lower your premiums. Their program also has a 12-month rate lock and 30-day free look period.

Plans offered: A, B, C*, F, G, N

* Plan C available in Michigan only


Cigna is a good all-around insurance company, covering over 15 million customers around the world with health and life insurance, as well as supplemental insurance. Cigna prides itself on its quality customer service. They are quick to process claims and answer questions. With its A.M. Best A rating, Cigna offers highly competitive rates and a variety of plans. This is a reputable company to start your search.

Plans offered: A, F, G, N


Blue Cross Blue Shield is one of the nation’s leading insurance companies, covering nearly one in three Americans and offering more supplemental insurance plan options than mostly every other provider. With BCBS’s model, the state you live in will impact which options are available to you. Each state has a BCBS-specific site that will outline the supplemental policies available to you.

Plans offered: A, F, G, N


Transamerica is known as one of the nation’s top life insurance companies, as evidenced by its A+ A.M. Best rating. They make customer service a top priority. Members are able to view and update their insurance policies and print claims forms any time through their convenient online Customer Service Center. Transmerica plans are available in 10 states across the country.

Plans offered: A, F, G, K, N


Thrivent is the highest-rated Medigap company, with an A++ with A.M. Best. They also have a variety of Medigap plan options. And because they’re newer to the market, rate increases in the near future are less likely.

Plans offered: A, B, C, D, F, G, K, L, M, N

Combined Insurance Co

Combined Insurance Co is unique in that it specializes in supplemental insurance. Combined Insurance Co has been around since 1922 and has an A- A.M. Best rating.

Plans offered: A, C, D, F, G, N

CSI Life Insurance Co

CSI Life Insurance Co is a member of the Berkshire Hathaway Insurance Group and has excellent financial strength with an A.M. Best A+ Superior rating. Best known for its Medigap plans, CSI offers competitive plans in 48 states and is recognized as a trusted insurer for seniors looking for the right policy.

Plans offered: A, B, C, F, G, N

Liberty Bankers Life Insurance Co

Liberty Bankers offers life insurance in 46 states though its main company and two wholly owned subsidiaries, Capitol Life (CLIC) and American Benefit Life (ABL). Medicare supplement plans are also available.

Plans offered: A, F, G, N

Philadelphia American Life / New Era

New Era offers the most popular Medigap plans (F, G and N) through its subsidiaries. Its subsidiaries include New Era Life Insurance Company, Philadelphia American Life Insurance Company, and New Era Life Insurance Company of the Midwest. New Era also offers several benefits to customers, including a 30-day free look period and guaranteed renewable for life.

Plans offered: F, G, N

Compare Medigap Premiums For FREE

Compare Medigap Insurance makes it easy to find the best Medicare supplement policies at the most affordable rates. After filling out a brief survey, you can get a free, personalized report to compare Medigap insurances companies by rate, plans, and coverage. Your FREE report allows you to see all of your options for companies serving your area and specific needs. You’ll have all the information you need to help you select the best Medicare supplemental insurance plan.