Is my Medicare plan ending in Oshkosh, WI?
Medicare plans are set by county. Oshkosh is in Winnebago County, so the plans listed as leaving Winnebago County for 2027 apply to Oshkosh residents.
Quick answer for Oshkosh
14 Medicare plans are from 7 companies listed in Winnebago County for 2026 but not for 2027, covering at least 2,737 people enrolled today. If you live in Oshkosh 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 Winnebago County
| Company | Plans leaving | People enrolled (at least) |
|---|---|---|
| Network Health | 1 | 1,921 |
| Anthem (Elevance Health) | 2 | 396 |
| UnitedHealthcare | 2 | 368 |
| Marshfield Clinic Health System | 5 | 52 |
| Cigna HealthSpring (HCSC) | 2 | not listed |
| Humana | 1 | not listed |
| Aetna (CVS Health) | 1 | not listed |
Plans going away in Winnebago County
| Plan going away | Company | People enrolled (at least) |
|---|---|---|
| Network Health Zero (PPO) H5215-012 | Network Health | 1,921 |
| Anthem Full Dual Advantage (HMO D-SNP) H9525-003 | Anthem (Elevance Health) | 238 |
| AARP Medicare Advantage CareFlex from UHC WI-18 (HMO-POS) H5253-198 | UnitedHealthcare | 234 |
| Anthem Full Dual Advantage 2 (HMO D-SNP) H9525-018 | Anthem (Elevance Health) | 158 |
| UHC Dual Complete WI-D003 (HMO-POS D-SNP) H5253-024 | UnitedHealthcare | 134 |
| Esteem Rx (HMO-POS) H5211-012 | Marshfield Clinic Health System | 41 |
| Essence Rx (HMO-POS) H5211-002 | Marshfield Clinic Health System | 11 |
| Compass (HMO-POS) H5211-003 | Marshfield Clinic Health System | 10 or fewer |
| Humana USAA Honor Giveback (PPO) H5216-258 | Humana | 10 or fewer |
| Legacy Rx (HMO-POS) H5211-004 | Marshfield Clinic Health System | 10 or fewer |
| Spirit (HMO-POS) H5211-001 | Marshfield Clinic Health System | 10 or fewer |
What to do if you live in Oshkosh
- 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 Oshkosh are covered by any plan you consider.
- Free, unbiased help: Wisconsin Medigap Helpline at 800-242-1060, or Medicare.gov, 1-800-MEDICARE.
Is my Medicare plan ending in Oshkosh?
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 Oshkosh?
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.
Oshkosh 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 Oshkosh: Oshkosh health insurance · Winnebago County · All Wisconsin plans ending for 2027 · Oshkosh population 66,184 (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.