Medicare Advantage

If you got a non-renewal letter in Riverside, here are the 17 Medicare Advantage plans ending in 2027

Riverside County has 88 Medicare Advantage plans for 2027. Compared with 2026, 17 plans are not coming back, 14 are new, and 52 continuing plans changed in some way you should check before December 7, 20 of them under a new name. This guide covers what those numbers mean for Riverside, not which plan to pick.

Riverside, Calif. — Some Medicare Advantage members in Riverside are opening a letter this fall that starts with words like "important notice about your plan." It is called a non-renewal letter, and it means the plan a person is on today will not be offered in 2027. In Riverside County, 17 Medicare Advantage plans are not coming back for the new plan year, according to the CMS Landscape Source Files for 2026 and 2027.

If your plan is on the list below, you have time and you have options — but you do need to act, because doing nothing has a specific result on January 1.

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

Seventeen Medicare Advantage plans sold in Riverside County in 2026 are not in CMS's 2027 file for the county. Riverside sits in Riverside County, and Medicare plan availability is set at the county level, so these changes apply countywide.

Here are the plans, in alphabetical order by carrier, exactly as CMS lists them:

• Alignment Health Honor+ Plan (HMO) — Alignment Health Plan
• Alignment Health My Choice Select (HMO) — Alignment Health Plan
• Alignment Health the ONE (HMO) — Alignment Health Plan
• Astiva Health Premier Plan (HMO) — Astiva Health
• Wellcare Giveback (HMO) — Centene (WellCare)
• Central Health Classic Care Plan I (HMO) — Central Health Medicare Plan
• Central Health Embrace Care Plan (HMO C-SNP) — Central Health Medicare Plan
• Central Health Embrace Choice Plan (HMO C-SNP) — Central Health Medicare Plan
• Central Health Medicare Plan (HMO) — Central Health Medicare Plan
• Central Health Part B Savings Plan (HMO) — Central Health Medicare Plan
• Central Health Valor Care Plan (HMO) — Central Health Medicare Plan
• Champion Select (HMO-POS C-SNP) — Champion Heath Plan
• Humana Gold Plus H5619-148 (HMO) — Humana
• Kaiser Permanente Dual Complete South P1 (HMO D-SNP) — Kaiser Permanente
• Molina Medicare Choice Care (HMO) — Molina Healthcare of California
• SCAN Affirm partnered with Included LGBTQ+ Health (HMO) — SCAN Health Plan
• SCAN MyChoice (HMO) — SCAN Health Plan

For 2027, 88 Medicare Advantage plans from 18 carriers will be offered in Riverside County, down from 91 plans and 19 carriers in 2026.

How can I tell if my Medicare Advantage plan is ending in Riverside in 2027?

Your carrier is required to tell you in writing. If your Medicare Advantage plan is leaving Riverside County for 2027, you should receive a plan non-renewal notice in the mail by early October 2026. The letter will say the plan will not be offered in your area in 2027 and will explain your choices.

A few things to look for and do:

• Check the mail carefully in September and October 2026, including anything that looks like plan paperwork.
• Compare the plan name on the letter to the name on your member ID card — they should match exactly.
• Keep the letter. You will need it as proof of a Special Enrollment Period if you miss the Dec. 7 deadline.

If you only received an Annual Notice of Change (ANOC) booklet, that is different — the ANOC means your plan is renewing with changes for 2027. The non-renewal letter is a separate notice.

What happens if I do nothing when my Medicare Advantage plan is non-renewed?

If your Medicare Advantage plan ends and you do not pick a new plan by Dec. 31, 2026, you will be returned to Original Medicare (Part A and Part B) on January 1, 2027. You keep Medicare — you do not lose coverage — but a few things change automatically:

• You will not have a Part D prescription drug plan attached, even if your old Advantage plan included drug coverage. Most people need to add a stand-alone Part D plan to avoid a late-enrollment penalty later.
• You will not have the extra benefits an Advantage plan may have included.
• You will pay the standard Original Medicare cost shares (Part A and Part B deductibles and coinsurance) unless you add a Medicare Supplement (Medigap) policy.

This default is predictable, but it is rarely the ending most people want. That is why the letter arrives in time to make a choice during Annual Enrollment.

What are my choices during the 2027 Annual Enrollment Period in Riverside?

You have two main paths, and the Annual Enrollment Period runs October 15 – December 7, 2026, with coverage starting January 1, 2027.

1. Pick a different Medicare Advantage plan. Riverside County will have 88 Medicare Advantage plans from 18 carriers available for 2027. The table on this page lists every one. You can compare them on the Medicare Plan Finder at medicare.gov or by calling 1-800-MEDICARE. 2. Move to Original Medicare and add a stand-alone Part D plan. You can also add a Medicare Supplement (Medigap) policy to help cover Part A and Part B cost sharing. California has its own Medigap rules — the California Department of Insurance can explain them.

Because your plan is being non-renewed, Medicare gives you a Special Enrollment Period that runs from Dec. 8, 2026 through the end of February 2027. During that window you can still join a new Medicare Advantage plan or a stand-alone Part D plan if you did not act by Dec. 7.

Non-renewal also triggers a Medigap guaranteed-issue right at the federal level, meaning certain Medigap plans must be sold to you without medical underwriting within a set window. California layers on additional protections; confirm the details with the California Department of Insurance before you shop.

What Part D numbers should I know when I compare plans for 2027?

Two program-level drug coverage figures are already set by CMS for 2027:

• The Part D out-of-pocket cap will be $2,400 in 2027 (up from $2,100 in 2026).
• The Part D maximum deductible will be $700 in 2027 (up from $615 in 2026).

The 2027 Part B standard premium and deductible and the 2027 IRMAA income brackets have not been announced yet; CMS typically publishes them in the fall, usually in November. The optional Medicare Prescription Payment Plan, which spreads drug costs across the year in monthly bills, is still available in 2027 for people who want it.