Plans ending in 2027 · Colorado
Medicare Advantage Plans Ending in Colorado for 2027, County by County
22 general Medicare Advantage plans sold in Colorado in 2026 do not appear anywhere in the CMS 2027 plan file. 54 of 64 counties lose at least one plan. Pick your county below for the exact list, the members on each plan, what remains, and the calendar.
Sources: CMS CY2026 and CY2027 landscape files, compared by Contract Plan ID; CMS CPSC enrollment, September 2026. General = MA and MA-PD rows with SNP indicator No. Colorado has 8 stand-alone drug plans for 2027.
By county
| County | Plans gone | Discontinued | Left the county | Members on ending plans | Plans 2026 → 2027 |
|---|---|---|---|---|---|
| Larimer County | 14 | 13 | 1 | 3,177 | 34 → 24 |
| Weld County | 16 | 14 | 2 | 2,843 | 37 → 25 |
| Mesa County | 10 | 10 | 0 | 2,618 | 21 → 13 |
| El Paso County | 12 | 12 | 0 | 1,731 | 33 → 25 |
| Boulder County | 13 | 11 | 2 | 1,494+ | 42 → 33 |
| Douglas County | 16 | 16 | 0 | 1,446+ | 43 → 32 |
| Jefferson County | 12 | 12 | 0 | 1,306+ | 44 → 37 |
| Denver County | 12 | 12 | 0 | 1,227 | 43 → 35 |
| Las Animas County | 10 | 4 | 6 | 1,213 | 14 → 5 |
| Arapahoe County | 11 | 11 | 0 | 1,134 | 40 → 33 |
| Elbert County | 19 | 11 | 8 | 985+ | 33 → 16 |
| Montezuma County | 3 | 3 | 0 | 915 | 4 → 2 |
| Montrose County | 4 | 4 | 0 | 808 | 11 → 7 |
| Morgan County | 12 | 9 | 3 | 790+ | 16 → 4 |
| Adams County | 11 | 11 | 0 | 783 | 43 → 36 |
| Delta County | 11 | 10 | 1 | 767+ | 20 → 10 |
| Eagle County | 2 | 2 | 0 | 741 | 2 → 0 |
| Alamosa County | 7 | 3 | 4 | 688+ | 7 → 0 |
| Pueblo County | 13 | 12 | 1 | 675+ | 33 → 23 |
| Rio Grande County | 4 | 2 | 2 | 672 | 4 → 0 |
| La Plata County | 7 | 7 | 0 | 631+ | 12 → 7 |
| Chaffee County | 4 | 2 | 2 | 618 | 8 → 5 |
| Archuleta County | 9 | 6 | 3 | 487+ | 12 → 3 |
| Clear Creek County | 22 | 12 | 10 | 484+ | 37 → 18 |
| Summit County | 4 | 4 | 0 | 453+ | 7 → 8 |
| Conejos County | 9 | 6 | 3 | 321+ | 16 → 10 |
| Park County | 15 | 11 | 4 | 270+ | 28 → 15 |
| Huerfano County | 10 | 7 | 3 | 260+ | 17 → 8 |
| Grand County | 9 | 9 | 0 | 258+ | 19 → 11 |
| Logan County | 5 | 5 | 0 | 235+ | 9 → 4 |
| Broomfield County | 12 | 11 | 1 | 208+ | 41 → 32 |
| Teller County | 15 | 12 | 3 | 199+ | 34 → 21 |
| Custer County | 10 | 7 | 3 | 185+ | 17 → 8 |
| Fremont County | 9 | 9 | 0 | 175+ | 29 → 23 |
| Gilpin County | 17 | 13 | 4 | 141+ | 30 → 15 |
| Saguache County | 7 | 4 | 3 | 119+ | 14 → 8 |
| Lake County | 5 | 5 | 0 | 116+ | 7 → 7 |
| Otero County | 3 | 3 | 0 | 84 | 7 → 4 |
| Washington County | 11 | 8 | 3 | 77+ | 18 → 8 |
| Yuma County | 2 | 2 | 0 | 67 | 2 → 0 |
| Phillips County | 2 | 2 | 0 | 55 | 2 → 0 |
| Lincoln County | 9 | 6 | 3 | 43+ | 16 → 8 |
| Ouray County | 3 | 3 | 0 | 41+ | 9 → 9 |
| Crowley County | 10 | 7 | 3 | 23+ | 18 → 9 |
| Gunnison County | 3 | 3 | 0 | 21+ | 9 → 9 |
| San Miguel County | 3 | 3 | 0 | 18+ | 6 → 3 |
| Rio Blanco County | 3 | 3 | 0 | 17+ | 6 → 3 |
| Jackson County | 10 | 7 | 3 | fewer than 11 each | 17 → 8 |
| Bent County | 3 | 3 | 0 | fewer than 11 each | 10 → 8 |
| Costilla County | 3 | 3 | 0 | fewer than 11 each | 11 → 9 |
| Dolores County | 3 | 3 | 0 | fewer than 11 each | 6 → 3 |
| Hinsdale County | 3 | 3 | 0 | fewer than 11 each | 9 → 9 |
| Mineral County | 3 | 3 | 0 | fewer than 11 each | 9 → 9 |
| San Juan County | 3 | 3 | 0 | fewer than 11 each | 9 → 9 |
No general plan leaves these counties for 2027: Baca County, Cheyenne County, Garfield County, Kiowa County, Kit Carson County, Moffat County, Pitkin County, Prowers County, Routt County, Sedgwick County.
The discontinued plans, statewide
| Plan (2026) | Plan ID | Type | Counties sold in | Members, September 2026 |
|---|---|---|---|---|
| Aetna Medicare Signature Aetna Medicare | H3931-153 | HMO-POS | 12 | 2,981 (+1 county under 11) |
| AARP Medicare Advantage from UHC CO-0013 UnitedHealthcare | H2406-104 | PPO | 12 | 2,753 |
| Humana Full Access H5216-333 Humana | H5216-333 | PPO | 50 | 2,686 (+14 counties under 11) |
| Aetna Medicare Signature Aetna Medicare | H3931-154 | HMO-POS | 17 | 2,345 (+2 counties under 11) |
| HealthSpring Preferred HealthSpring | H0672-024 | HMO | 18 | 2,319 (+2 counties under 11) |
| Aetna Medicare Signature Aetna Medicare | H4711-008 | HMO-POS | 30 | 1,696 (+12 counties under 11) |
| AARP Medicare Advantage from UHC CO-0017 UnitedHealthcare | H2406-110 | PPO | 12 | 1,333 (+1 county under 11) |
| Select Health Medicare + Kroger Select Health | H1994-030 | HMO | 16 | 1,232 (+4 counties under 11) |
| HumanaChoice H5216-437 Humana | H5216-437 | PPO | 46 | 1,037 (+24 counties under 11) |
| Select Health Medicare Flex Select Health | H1994-031 | HMO | 18 | 974 (+6 counties under 11) |
| Humana Value Plus H5216-195 Humana | H5216-195 | PPO | 51 | 910 (+23 counties under 11) |
| Kaiser Permanente Senior Advantage Choice DM Kaiser Permanente | H3138-001 | PPO | 11 | 844 (+4 counties under 11) |
| Select Health Medicare + Kroger Select Health | H1994-034 | HMO | 2 | 490 |
| Kaiser Permanente Senior Advantage Choice South Kaiser Permanente | H3138-002 | PPO | 4 | 371 |
| Erickson Advantage Signature UnitedHealthcare | H5652-001 | HMO-POS | 1 | 284 |
| Aetna Medicare Eagle Aetna Medicare | H4711-010 | HMO-POS | 30 | 202 (+23 counties under 11) |
| Select Health Medicare Active Select Health | H1994-035 | HMO | 18 | 180 (+8 counties under 11) |
| Erickson Advantage Liberty UnitedHealthcare | H5652-008 | HMO-POS | 1 | 142 |
| Kaiser Permanente Senior Advantage Choice North Kaiser Permanente | H3138-003 | PPO | 2 | 95 |
| Erickson Advantage Freedom UnitedHealthcare | H5652-006 | HMO-POS | 1 | 94 |
| Erickson Advantage Liberty no Rx UnitedHealthcare | H5652-002 | HMO-POS | 1 | 72 |
| Clear Spring Health BrightPath Advantage Clear Spring Health | H6379-001 | HMO | 24 | fewer than 11 each |
Plans with no row anywhere in the CMS 2027 file. Members are summed across the Colorado counties where CMS reports a count. Plans re-issued under a new ID appear here and as "new" on the county pages.
What a member of an ending plan does next
- Keep the letter. A non-renewing plan must notify you by mail at least 90 days before it ends (42 CFR § 422.506), on or about October 2 for December 31.
- Choose between October 15 and December 7 so new coverage starts January 1 (Medicare.gov): another Advantage plan, or Original Medicare with a drug plan and, if you want it, Medigap.
- The Medigap door is open: Plan A, B, D, G, K or L with no health questions, from 60 days before to 63 days after the plan ends, November 1, 2026 through March 4, 2027 (Medicare.gov).
- If you miss December 7, a discontinued plan gives you a Special Enrollment Period through February 28 (42 CFR § 422.62), with January spent in Original Medicare.
Holding a letter in Colorado?
Brian Penner is licensed in Colorado and works by phone. Bring the letter, your doctors and your prescriptions, and we will compare the plans we offer in your county against all three doors. No cost, no pressure. We do not offer every plan available in your area.
Book a phone appointment →How we know all this: the Medicare On Main Data Desk built these pages from the CMS CY2026 and CY2027 landscape files compared by Contract Plan ID, CMS's September 2026 county-level enrollment report, and the federal rules and Medicare.gov pages on non-renewal notices, enrollment periods and Medigap guaranteed-issue rights. Carrier names are factual reporting, not endorsement or criticism. This is education, not advice; confirm plans, costs and eligibility with a licensed agent or Medicare.gov.
Frequently asked questions
Which Medicare Advantage plans are ending in Colorado for 2027?
22 general (non-Special-Needs) Medicare Advantage plans sold somewhere in Colorado in 2026 have no row anywhere in the CMS 2027 plan file and are being discontinued, led by Aetna Medicare Signature (H3931-153), AARP Medicare Advantage from UHC CO-0013 (H2406-104), Humana Full Access H5216-333 (H5216-333). Other plans continue elsewhere but left particular counties. The county pages list each one with its 2026 premium, cap, star rating and September 2026 enrollment.
How many Colorado counties are affected?
54 of the 64 counties with a Medicare Advantage plan in 2026 or 2027 lose at least one general plan for 2027; 54 lose a plan that is discontinued everywhere. 10 counties keep every 2026 plan.
How many people in Colorado are on a plan that is ending?
Summing CMS's September 2026 county enrollment for every ending plan in every county gives 31,619 members, not counting counties where CMS suppresses a plan's count because it is under 11. The figure includes employer-group members, so the number of individuals choosing a new plan is somewhat lower.
What should I do if my plan is on the list?
Keep the non-renewal letter dated on or about October 2. Choose 2027 coverage between October 15 and December 7: another Medicare Advantage plan, or Original Medicare with a stand-alone drug plan and, if you want it, a Medigap policy. A plan leaving Medicare or your area gives you a guaranteed-issue right to Medigap Plan A, B, D, G, K or L from 60 days before to 63 days after it ends, November 1, 2026 through March 4, 2027.
Can Medicare On Main help in Colorado?
Yes, by phone. Brian Penner is licensed in Colorado; see our license verification page. We do not offer every plan available in your area, and we will say so when Medicare.gov, 1-800-MEDICARE or your State Health Insurance Assistance Program is the better next call.