Medicare Advantage

14 Medicare Advantage Plans Not Returning in Oklahoma for 2027: The List

OKLAHOMA CITY — Fourteen Medicare Advantage plans currently offered somewhere in Oklahoma are not listed in the federal government's 2027 Medicare Advantage Landscape file for any county in the state, according to a side-by-side comparison of the 2026 and 2027 Centers for Medicare & Medicaid Services (CMS) Landscape Source Files. For 2027, Oklahoma seniors will have 81 Medicare Advantage plans available statewide from nine carriers.

The non-renewals come from five carriers: Aetna (CVS Health), Blue Cross Blue Shield of Oklahoma (HCSC), Centene (WellCare), Humana, and UnitedHealthcare. Because each Medicare Advantage plan is sold county by county, a plan on this list may never have been offered where you live — or it may have been your plan.

Which Medicare Advantage plans are not returning in Oklahoma for 2027?

Fourteen Medicare Advantage plans offered in Oklahoma for 2026 are not in CMS's 2027 Landscape file for any Oklahoma county. The full list, with carrier, plan type and the number of Oklahoma counties each one served in 2026, is in the table on this page.

The 14 plans come from five carriers: one plan from Aetna (CVS Health), eight plans from Blue Cross Blue Shield of Oklahoma (HCSC), three plans from Centene (WellCare), one plan from Humana, and one from UnitedHealthcare. For 2027, 81 Medicare Advantage plans from nine carriers are set to be offered somewhere in Oklahoma.

Which non-returning Oklahoma plans served the most counties in 2026?

Several of the plans not returning for 2027 had very wide footprints in Oklahoma in 2026. UHC Dual Complete OK-S002 (HMO-POS D-SNP) from UnitedHealthcare was offered in 72 Oklahoma counties, and Blue Cross Medicare Advantage Balance (PPO) and Blue Cross Medicare Advantage Optimum (PPO) from Blue Cross Blue Shield of Oklahoma were each offered in 58 counties.

HumanaChoice SNP-DE H5216-469 (PPO D-SNP) served 50 Oklahoma counties. Four other Blue Cross PPOs — Classic, Dental Premier, Health Choice, and Protect — were each in 44 counties, and three WellCare PPO plans (Dual Access Open, Patriot Giveback Open, and Simple Open) were each in 30 counties. A plan's county count tells you where it was sold in 2026; it does not mean it was offered everywhere in Oklahoma.

How can an Oklahoma member tell if their Medicare Advantage plan is leaving for 2027?

There are two reliable signals. First, a carrier whose plan is not returning must mail each affected member a non-renewal notice, generally referred to as an Annual Notice of Non-Renewal, before the Annual Enrollment Period begins. Second, you can compare the exact plan name printed on your member ID card against the list of 14 plans on this page.

Match the name letter for letter, including the plan type in parentheses — "(PPO)," "(HMO)," "(HMO D-SNP)," "(PPO D-SNP)," or "(HMO-POS D-SNP)." Many carriers sell several plans with similar names, and only the specific plan names shown here are not returning.

What happens to an Oklahoma enrollee who does nothing before January 1, 2027?

If your Medicare Advantage plan is not renewed and you make no other choice, you return to Original Medicare (Parts A and B) on January 1, 2027. You will not have Medicare Part D prescription drug coverage unless you actively enroll in a stand-alone Part D plan or a new Medicare Advantage plan that includes drug coverage.

Original Medicare will pay for covered hospital and medical services starting January 1, but it does not include the extra benefits a Medicare Advantage plan may have offered. If you want drug coverage or Medicare Advantage coverage for 2027, you need to pick a plan.

Is there a Special Enrollment Period in Oklahoma if a Medicare Advantage plan is non-renewed?

Yes. When a Medicare Advantage plan leaves the market, CMS gives affected members a Special Enrollment Period that runs through the end of February 2027. During that window you can enroll in another Medicare Advantage plan or move to Original Medicare and add a stand-alone Part D plan.

Members losing Medicare Advantage coverage because a plan is discontinued also typically qualify for a federal Medigap guaranteed-issue right, which lets you buy certain Medigap policies without medical underwriting within a limited window. The specific Medigap plans available and the exact rules in Oklahoma are set at the state level; the Oklahoma Insurance Department is the authoritative source for those details.

How do I check the 2027 Medicare Advantage lineup for my Oklahoma county?

Use the Medicare Plan Finder at medicare.gov and enter your ZIP code, or call 1-800-MEDICARE (TTY 1-877-486-2048), available 24 hours a day, seven days a week. The Plan Finder shows every Medicare Advantage and Part D plan available in your county for 2027, with premiums, drug coverage, provider networks and star ratings in one place.

Statewide, 81 Medicare Advantage plans from nine carriers will be offered somewhere in Oklahoma for 2027, but the lineup in any given county is almost always smaller. Only the Plan Finder — or the plan's own Evidence of Coverage and provider and pharmacy directories — can confirm what is sold where you live.

What should Oklahoma Medicare members do before December 7, 2026?

Between October 15 and December 7, 2026, review your current plan's Annual Notice of Change or non-renewal letter, then compare your options in the Medicare Plan Finder for Annual Enrollment 2027. A choice you make in that window takes effect January 1, 2027.

If your plan is on the list of 14 non-renewing plans, you have the Annual Enrollment Period and, after that, the Special Enrollment Period through the end of February 2027. Taking action during Medicare Open Enrollment 2027 means your new coverage starts without a gap on January 1.

Where can Oklahoma seniors get free help choosing a plan?

Free, unbiased help is available directly from Medicare. Call 1-800-MEDICARE (TTY 1-877-486-2048) any time, or use the Plan Finder and plan comparison tools at medicare.gov.

You can also call the carrier listed on your current member ID card to confirm whether your specific plan is being renewed, discontinued, or replaced with a different plan for 2027.