Overall, Cigna offers the best Medicare Supplement plans in Colorado, with rates 2.5% below average for the most popular plan in the nation (Plan G). However, you should also look into Anthem and UnitedHealthcare for affordable plans, as pricing differs widely by policy letter.
Best Medicare Supplement Plans in Colorado
Cigna, Anthem and UnitedHealthcare offer the best Medicare Supplement plans in Colorado with up to 2.5% savings on Plan G policies.

Updated: May 28, 2025
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Key Takeaways
Cigna offers the best and cheapest Medicare Supplement plans for the most popular policy in the state, Plan G, for $139 per month.
Medicare Supplement plans in Colorado can cost, on average, between $50 and $210 per month, depending on your chosen policy.
To find the plan you need, check plan availability, restrictions and benefits, and compare quotes from multiple companies.
Compare Health Insurance Rates
Ensure you're getting the best rate for your health insurance. Compare quotes from the top insurance companies.
Who Are the Best Cheap Medicare Supplement Plan Companies in Colorado?
Cigna | $139 | $1,669 |
Anthem | $142 | $1,704 |
UnitedHealthcare | $147 | $1,763 |
*Pricing shown is for Medicare Supplement Plan G for 65-year-olds.
Compare Personalized Best Cheap Medicare Supplement Companies in Colorado
The top companies for the most popular plans nationwide are listed above, but your needs might differ. Check out the filterable table below to find the best and most affordable company for you.
Anthem | $124 | $1,483 |
Cigna | $195 | $2,338 |
UnitedHealthcare | $107 | $1,283 |
Colorado Medicare Supplement Plan Cost
The typical Medicare Supplement plan, Plan G, costs around $143 monthly or $1,712 per year on average in Colorado. However, your rates can vary widely, ranging from $50 to $210 monthly based on the provider and plan you select.
A | $142 | $208 |
B | $144 | $247 |
C | $210 | $340 |
F | $173 | $281 |
G | $143 | $219 |
K | $50 | $86 |
L | $95 | $164 |
N | $117 | $182 |
Colorado Medicare Supplement Coverage Guide
Choosing the right Medicare Supplement plan and company can be challenging with numerous options and considerations. This guide details what coverage is available, how to choose which plan you need, and how to get the best cheap company for you.
Colorado Medicare Supplement Plan Comparison Chart
All Medicare Supplement plans, regardless of your state, have standardized coverage. The table below summarizes what each Medicare Supplement (Medigap) plan letter covers.
Plan Letter | Co-Insurance and Copayment Coverage | Deductibles and Other Coverages |
---|---|---|
A |
|
|
B |
|
|
C |
|
|
D |
|
|
F |
|
|
G |
|
|
K |
|
|
L |
|
|
M |
|
|
N |
|
|
How to Decide Which Medicare Supplement Plan You Need
Choosing a Medicare Supplement plan depends on your eligibility, financial situation, age, health condition and lifestyle. Consider these factors to make the best choice.
Eligibility
New enrollees have access to all plans except C or F. Those eligible for Medicare before 2020 can choose from all 10 plans.
Age, condition and lifestyle
Your age, pre-existing conditions and lifestyle help determine your needed coverage. Consider how likely you'll use different coverage items and consult a medical professional or Medicare Supplement specialist.
Financial status
Your ability to pay for coverage matters, regardless of risk factors and coverage needs. Find plans that match your risk profile and remain affordable.
How to Find the Best Colorado Medicare Supplement Company
Once you've decided what plan is right for you, it's time to compare companies. Here are the key things to look for in a Medicare Supplement provider in Colorado.
- 1
Customer satisfaction and complaints
Insurance companies can sometimes receive complaints about service issues. To find a reliable provider, check customer ratings from J.D. Power and the NAIC.
- 2
Plan pricing
Costs for identical plans can differ between companies. Compare plans side by side. Look for the most affordable options without compromising coverage and service quality.
- 3
Added benefits
Some insurers offer discounts on related products, such as gym memberships, which can enhance the value of your policy, whether you have Medicare Supplemental insurance or other types.
Best Medigap Plans in Colorado: Bottom Line
The top three providers for the best Medicare Supplement insurance in Colorado are Cigna, Anthem and UnitedHealthcare. Compare reputations, benefits and pricing to find your ideal plan.
Medicare Supplement Plans Colorado: FAQ
Here are answers to frequently asked questions about Medicare Supplement insurance in Colorado.
What is the best Medicare Supplement provider in Colorado?
Cigna is the best health insurance provider for the most popular Medigap plan in Colorado. Its pricing is 2.5% lower than the state average, making it the most affordable company in the state.
What is the cost of Medicare Supplement plans in Colorado?
Depending on your plan selection, pricing for Medicare Supplement plans in Colorado can range anywhere from $602 to $4,082 per year. For the most popular plan in the state, Plan G, average costs can range from $1,712 to $2,626 per year.
How We Decided the Best Medicare Supplement Companies in Colorado
MoneyGeek collected data from the biggest Medicare Supplement/Medigap providers in Colorado for 65-year-olds and 75-year-olds. Plans qualified as "best" only when accurate online quotes were available. The analysis used Medicare Supplement Plan G, the most popular plan nationwide, to determine the best and most affordable providers.
About Mark Fitzpatrick

Mark Fitzpatrick, a Licensed Property and Casualty Insurance Producer, is MoneyGeek's resident Personal Finance Expert. With over five years of experience analyzing the insurance market, he conducts original research and creates tailored content for all types of buyers. His insights have been featured in publications like CNBC, NBC News and Mashable.
Fitzpatrick holds a master’s degree in economics and international relations from Johns Hopkins University and a bachelor’s degree from Boston College. He's also a five-time Jeopardy champion!
Passionate about economics and insurance, he aims to promote transparency in financial topics and empower others to make confident money decisions.