Medicare Advantage

27 New Medicare Advantage Plans in Colorado for 2027: The List

DENVER — Colorado's Medicare Advantage menu is growing again for 2027. According to the CMS Medicare Advantage Landscape Source Files for 2026 and 2027, 27 of the 104 Medicare Advantage plans offered statewide for 2027 are new — meaning they were not offered in Colorado for 2026. The newcomers span seven carriers and show up unevenly across the state, because every Medicare Advantage plan is sold county by county.

New for 2027Colorado

Here is what Colorado shoppers should know before the Annual Enrollment Period closes on December 7, 2026.

How many Medicare Advantage plans are new in Colorado for 2027, and which carriers offer them?

Colorado has 27 new Medicare Advantage plans for 2027, out of 104 plans offered statewide, per the CMS 2027 Landscape Source File. Seven carriers are bringing those new plans to the state: Aetna (CVS Health) with 5, Devoted Health with 8, Elevance Health (Anthem) with 1, HealthSpring with 6, Humana with 2, Select Health with 2, and UnitedHealthcare with 3.

Each plan is counted once statewide. Because carriers file plans county by county, a single plan on this list might appear in dozens of Colorado counties or in just a handful. The full plan-by-plan table on this page shows the carrier, plan type, drug coverage status and county reach for each one.

Which new 2027 Medicare Advantage plans in Colorado reach the most counties?

The widest county footprint among the new 2027 plans belongs to UnitedHealthcare's UHC Dual Complete CO-S4 (HMO-POS D-SNP), listed in 37 Colorado counties in the CMS 2027 Landscape file. Several other newcomers also reach a large share of the state:

• DEVOTED C-SNP GIVEBACK EXTRAS 017 CO (HMO C-SNP) — 18 counties
• DEVOTED GIVEBACK EXTRAS 020 CO (HMO) — 18 counties
• HealthSpring TotalCare (HMO D-SNP) — 18 counties
• HealthSpring TotalCare Plus (HMO D-SNP) — 18 counties
• A second UHC Dual Complete CO-S4 (HMO-POS D-SNP) plan — 18 counties

Many of the widest-reach new plans are Dual-Eligible Special Needs Plans (D-SNPs) or Chronic Condition Special Needs Plans (C-SNPs), which have their own eligibility rules. Others, such as Aetna Medicare Prime (HMO), Aetna Medicare Signature (HMO), DEVOTED CORE 014 CO (HMO), DEVOTED GIVEBACK 015 CO (HMO), several HealthSpring Preferred (HMO) plans, Humana Total Complete (HMO), and Select Health Medicare Essential (HMO), are general-enrollment HMOs with smaller county footprints. The full list on this page shows the exact reach for each.

What does it mean that a Medicare Advantage plan is "new" in Colorado for 2027?

A "new" plan is one filed with CMS for 2027 that was not offered in Colorado in 2026. As a factual matter, a brand-new plan does not yet have a CMS Star Rating and has no claims history in Colorado for members or doctors' offices to point to. CMS typically assigns Star Ratings only after a plan has enough data; new contracts and plans are commonly shown without a rating in their first year.

That is not a judgment for or against new plans. It is just information to keep in mind when you compare a 2027 newcomer with a plan that has been in the Colorado market for several years.

How do I check whether a new 2027 plan is offered in my Colorado county and covers my doctors and drugs?

Use the Medicare Plan Finder at medicare.gov and enter your ZIP code; the tool will show only the Medicare Advantage plans available in your specific Colorado county for 2027. You can also call 1-800-MEDICARE (TTY 1-877-486-2048), which is open 24 hours a day, 7 days a week.

Once you see a plan in your county, confirm three things directly before enrolling:

1. Your doctors, specialists and preferred hospital are in the plan's 2027 network — check the plan's own provider directory. 2. Your prescriptions are on the plan's 2027 formulary at a tier and cost you can live with — check the plan's drug list. 3. The plan's 2027 Summary of Benefits and Evidence of Coverage match what you need, including rules for referrals, prior authorization and travel coverage.

Networks, formularies and extra benefits are set by each carrier and can change from year to year. The authoritative source is always the plan's own 2027 documents, not a summary.

What should Colorado Medicare shoppers do before December 7, 2026?

The Annual Enrollment Period for 2027 coverage runs October 15 – December 7, 2026, and whatever you choose during that window takes effect January 1, 2027. If you do nothing, you generally stay in your current plan — but your current plan's 2027 costs, network and drug list may not be the same as its 2026 version, so a quick review is worth the time.

A simple checklist:

• Read the Annual Notice of Change (ANOC) your current plan mailed in September 2026.
• On medicare.gov, run Plan Finder with your Colorado ZIP code and your actual prescription list.
• If a new 2027 plan interests you, pull up its Summary of Benefits, provider directory and formulary before enrolling.
• Make any change by December 7, 2026, for a January 1, 2027 effective date.

There is a separate Medicare Advantage Open Enrollment Period from January 1 to March 31, 2027, with narrower rules, but AEP is the broadest window.

Where can Coloradans get free help comparing 2027 Medicare Advantage plans?

Free, unbiased help is available directly from Medicare. The Medicare Plan Finder at medicare.gov lets you compare every Medicare Advantage plan available in your Colorado county for 2027 side by side, including the new plans listed above. 1-800-MEDICARE (TTY 1-877-486-2048) is staffed around the clock and can walk you through enrollment, confirm what is offered in your ZIP code, and explain how a change would take effect.