Is my Medicare plan ending in Centennial, CO?
Medicare plans are set by county. Centennial is in Arapahoe County, so the plans listed as leaving Arapahoe County for 2027 apply to Centennial residents.
Quick answer for Centennial
20 Medicare plans are from 7 companies listed in Arapahoe County for 2026 but not for 2027, covering at least 2,991 people enrolled today. If you live in Centennial and have one of these plans, you can choose a new plan from October 15 to December 7, and coverage starts January 1.
Companies with plans leaving Arapahoe County
| Company | Plans leaving | People enrolled (at least) |
|---|---|---|
| UnitedHealthcare | 1 | 1,727 |
| Aetna (CVS Health) | 4 | 540 |
| Humana | 4 | 252 |
| Intermountain Health Care | 3 | 185 |
| Cigna HealthSpring (HCSC) | 5 | 145 |
| Kaiser Permanente | 1 | 142 |
| Group 1001 | 2 | not listed |
Plans going away in Arapahoe County
| Plan going away | Company | People enrolled (at least) |
|---|---|---|
| UHC Dual Complete CO-S4 (HMO-POS D-SNP) H0624-006 | UnitedHealthcare | 1,727 |
| Aetna Medicare Signature (HMO-POS) H4711-008 | Aetna (CVS Health) | 429 |
| Humana Full Access H5216-333 (PPO) H5216-333 | Humana | 143 |
| Kaiser Permanente Senior Advantage Choice DM (PPO) H3138-001 | Kaiser Permanente | 142 |
| HealthSpring Preferred (HMO) H0672-024 | Cigna HealthSpring (HCSC) | 120 |
| Select Health Medicare + Kroger (HMO) H1994-030 | Intermountain Health Care | 104 |
| Aetna Medicare Dual Care (HMO D-SNP) H4711-012 | Aetna (CVS Health) | 89 |
| Select Health Medicare Flex (HMO) H1994-031 | Intermountain Health Care | 69 |
| HumanaChoice H5216-437 (PPO) H5216-437 | Humana | 57 |
| Humana Value Plus H5216-195 (PPO) H5216-195 | Humana | 36 |
| Aetna Medicare Eagle (HMO-POS) H4711-010 | Aetna (CVS Health) | 22 |
| HumanaChoice SNP-DE H5216-468 (PPO D-SNP) H5216-468 | Humana | 16 |
| HealthSpring TotalCare Plus (HMO D-SNP) H0672-010 | Cigna HealthSpring (HCSC) | 14 |
| Select Health Medicare Active (HMO) H1994-035 | Intermountain Health Care | 12 |
| HealthSpring TotalCare (HMO D-SNP) H0672-009 | Cigna HealthSpring (HCSC) | 11 |
See all 17 plans leaving Arapahoe County →
What to do if you live in Centennial
- Read the notice from your plan. It names the plan that is ending and your choices.
- Compare 2027 options 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 pharmacy near Centennial are covered by any plan you consider.
- Free, unbiased help: Colorado State Health Insurance Assistance Program (SHIP) at 303-894-7552, or Medicare.gov, 1-800-MEDICARE.
Is my Medicare plan ending in Centennial?
Medicare plans are offered by service area, usually county by county. Check the list above for your plan name or plan ID. A plan can be listed because it was renumbered or replaced, so your plan notice is the final word.
What happens if I do nothing in Centennial?
If your plan is not renewing and you do not choose a new one, you may be moved to Original Medicare, which does not include drug coverage. Compare options before December 7 and confirm your dates with Medicare.gov or your plan notice.
Do I have to enroll if I call?
No. Calling is a conversation about your options, and you are never required to enroll.
Centennial residents: 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 timeMore for Centennial: Centennial health insurance · Arapahoe County · All Colorado plans ending for 2027 · Centennial population 106,883 (Census Bureau).
Source: CMS Medicare Advantage and Part D landscape files for 2026 and 2027, and CMS enrollment data from September 2026.
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.