Best Medicare Advantage Plans in Colorado 2025
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Over 1 million people in Colorado are signed up for Medicare, putting it in the top half of U.S. states for Medicare beneficiaries.
Medicare is the government health care program for people age 65 and older. Medicare Advantage is a bundled alternative to Medicare sold by private insurance companies. It offers all the same benefits and usually some extras, such as cost help with dental and vision coverage.
Medicare Advantage plans offer more benefits than Original Medicare, and they're often cheaper than paying for Medicare and a Medicare Supplement plan. However, they offer less flexibility since you’ll need to get care from within the plan’s network of providers. Weigh your options to determine what plan best suits your needs.
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Compare the best Medicare Advantage plans in Colorado
Top-rated Medicare Advantage plans in Colorado
Each year, the Centers for Medicare & Medicaid Services (CMS) awards every Medicare Advantage plan a star rating on a scale of 1 to 5, with 5 being a top-rated plan. Below are companies with plans that received top marks in Colorado for the 2025 plan year. (Check out more information about Medicare star ratings.)
4.5-star plans
There are no 5-star Medicare Advantage plans in Colorado in 2025. The companies below offer plans in Colorado that are rated 4.5 stars out of 5 by CMS:
4-star plans
The companies below offer plans in Colorado that are rated 4 stars out of 5 by CMS:
Select Health.
UnitedHealthcare.
This list doesn’t include special needs plans, which restrict membership to people with certain diseases or characteristics, such as having a chronic illness or living in a nursing home.
What to know about Medicare in Colorado
With nearly 1 in 6 people in Colorado being 65 and older, the state offers a variety of Medicare and Medicare Advantage plans.
The average monthly premium in 2025 for a Medicare Advantage plan in Colorado is $12.20. (It was $15.11 in 2024.)
There are 120 Medicare Advantage plans available in Colorado in 2025. (There were 132 plans in 2024.)
Of Medicare-eligible people in Colorado, 99.7% have access to a $0-premium Medicare Advantage plan.
Medicare resources in Colorado
Senior Health Care & Medicare Assistance: Free guidance and counseling for Medicare enrollees.
Colorado Division of Insurance: For questions about your insurance.
Health First Colorado: For questions about Medicaid benefits or eligibility.
Find the right Medicare Advantage plan
It’s important to do your research before selecting a Medicare Advantage plan for yourself. Here are some questions to consider asking:
What are the plan’s costs? Do you understand what the plan’s premium, deductibles, copays and/or coinsurance will be? Can you afford them?
Is your doctor in-network? If you have a preferred medical provider or providers, make sure they participate in the plan’s network.
Are your prescriptions covered? If you’re on medication, it’s crucial to understand how the plan covers it. What tier are your prescription drugs on, and are there any coverage rules that apply to them?
Is there dental coverage? Does the plan offer routine coverage for vision, dental and hearing needs?
Are there extras? Does the plan offer any extra benefits, such as fitness memberships, transportation benefits or meal delivery?
Looking for more insurance in Colorado? Check out these resources:
Medicare Advantage review methodology
The Medicare Advantage marketplace is concentrated among just a handful of companies; in many places, one insurer serves more than half of the market. NerdWallet reviewed 26 Medicare Advantage brands, with some insurers having more than one brand under their umbrella. (For example, Blue Cross Blue Shield includes the brands Anthem and Highmark.) At the national level, these reviews include nine of the 10 largest brands by enrollment. At the state level, our research includes at least one major insurer in 47 of the 49 states that offer Medicare Advantage plans, and includes the top two insurers in 35 of those states. (Alaska doesn't offer Medicare Advantage plans.) We also look at online search volume to identify regional and other notable players in the space.
NerdWallet’s Medicare Advantage reviews are based on ratings data from the Centers for Medicare & Medicaid Services, as well as pricing, plan availability by state, plan types available, consumer experience, extra benefits offered and more. These reviews are a guide, but we encourage you to shop around and compare several plans to find the best coverage and rate for you. NerdWallet does not receive compensation for any reviews. Read our editorial guidelines for additional information.
This roundup includes only insurers that sell Medicare Advantage in Colorado.
