Top Medicare Supplement Insurance Providers in 2025

According to extensive research conducted by Investopedia, AARP/UnitedHealthcare is considered the top Medicare Supplement insurance provider.

This recognition is based on its strong customer satisfaction ratings, robust financial stability, diverse plan offerings, and competitive pricing. However, if you prioritise the highest ratings for customer satisfaction and financial strength, State Farm may be a better choice. Additionally, Anthem stands out for offering some of the lowest premiums in certain states.

Medicare supplement insurance, also known as Medigap, is required to provide a standardised set of benefits across most states. While every lettered plan offers the same core coverage, regardless of the insurance provider, companies differentiate themselves through lower pricing, additional benefits, and user-friendly tools for plan management.

Customer complaint levels can also vary significantly between providers, so it’s essential to compare options before choosing the right plan. The following top picks are based on a thorough evaluation of cost, value, customer satisfaction, and other factors.

Best Medicare Supplement (Medigap) Insurance Providers

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Here’s a summary of the top companies for Medigap coverage:

1. Best Overall and Best Plan G: AARP/UnitedHealthcare
   AARP/UnitedHealthcare is praised for its affordability, extensive plan options, and high customer satisfaction, making it a strong all-around choice.
2. Best for Low Costs: Anthem
   Anthem offers some of the lowest premiums available, particularly in certain states, making it a fantastic option for budget-conscious consumers.
3. Best for Variety and Best Plan F: Blue Cross Blue Shield
   With a wide range of plans to choose from, Blue Cross Blue Shield is ideal for those seeking flexibility, and it shines with its offerings for Plan F.
4. Best for Financial Strength and Customer Satisfaction: State Farm
   For those looking for a provider with unparalleled financial strength and excellent customer service, State Farm is the top choice.
5. Best High-Deductible Plan G: Humana
   Humana excels in providing high-deductible Plan G options, catering to individuals seeking lower monthly premiums while maintaining comprehensive coverage.