Medicare plans ending in Colorado for 2027
Which companies have Medicare plans leaving Colorado, where, and what to do if yours is one of them.
Quick answer
53 Medicare plans from 7 companies are listed in at least one Colorado county for 2026 but not for 2027. If your plan is one of them, you will get a letter from your plan, and you can choose a new plan during the Annual Enrollment Period, October 15 to December 7. New coverage starts January 1.
Companies with plans leaving Colorado
| Company | Plans leaving | People enrolled (at least) |
|---|---|---|
| UnitedHealthcare | 16 | 25,795 |
| Aetna (CVS Health) | 12 (1 leave all of Colorado) | 11,857 |
| Humana | 10 | 7,334 |
| Intermountain Health Care | 5 | 4,385 |
| Cigna HealthSpring (HCSC) | 5 (2 leave all of Colorado) | 2,553 |
| Kaiser Permanente | 3 | 1,310 |
| Group 1001 | 2 | not listed |
Where the most people are affected
- Mesa County · 4,270
- Larimer County · 4,262
- Weld County · 4,164
- El Paso County · 4,075
- Denver County · 3,282
- Arapahoe County · 2,991
- Pueblo County · 2,802
- Jefferson County · 2,477
- Adams County · 2,236
- Boulder County · 2,108
What to do if your plan is ending
- Read the letter from your plan. It names the plan that is ending and your choices.
- Compare options for 2027 before December 7: another Medicare Advantage plan, or Original Medicare with a Medicare Supplement and a Part D drug plan.
- Check that your doctors, hospitals and prescriptions are covered by any plan you consider.
- Get free, unbiased help from Colorado State Health Insurance Assistance Program (SHIP) at 303-894-7552, or Medicare.gov, 1-800-MEDICARE.
How do I know if my plan is ending in Colorado?
Your plan must tell you. You should get a notice by October 2 if your plan is not renewing. You can also look for your plan on this page by company, or check your county page.
Can I keep my doctors if my plan ends?
Not automatically. Each new plan has its own network, so check your doctors and prescriptions against any plan you consider.
Do I have to enroll if I call?
No. Calling is a conversation about your options, and you are never required to enroll.
Plan ending in Colorado? Call 855-367-1095
Call Lander LLC to go over your options. There is no cost to call or to speak with an agent, and you are never required to enroll in anything.
Call 855-367-1095 Open 8 AM-10 PM Eastern timeSource: CMS Medicare Advantage and Part D landscape files for 2026 and 2027, and CMS enrollment data from September 2026. A plan can be listed because it was renumbered or replaced, not only because a company is leaving, so check your plan notice.
Reviewed by Richard Lander, licensed insurance agent (NPN 21255551), Lander LLC. Last updated October 3, 2026. This page is educational and is not a quote, an offer of coverage, or legal or tax advice.