If you’re on a Medicare Advantage plan in Orange County, keep an eye on your mailbox this October. Humana has confirmed it will not renew Medicare Advantage plans covering roughly 600,000 members nationwide for the 2027 plan year — part of a broader pullback across the industry as insurers respond to tighter federal reimbursement. Federally required non-renewal notices are going out in early October, and if one lands in your mailbox, a 30-day clock and a much more important 63-day clock both start ticking the moment you read it.
Why this matters even if your plan isn’t a Humana plan
Humana’s cuts made the news first, but they’re a symptom of a wider trend. Medicare Advantage insurers across the country have been trimming unprofitable service areas and consolidating plans for several years running, as CMS reimbursement growth has slowed and star-rating bonus payments have gotten harder to earn. When a carrier decides a plan is no longer financially viable in a given service area, federal rules require it to send enrollees a formal non-renewal notice before the fall — giving members time to choose a new plan during Medicare’s Annual Enrollment Period, which runs October 15 through December 7.
Humana has not yet published a county-by-county list of which plans are affected, so we can’t tell you today whether a specific Orange County Humana plan is on the list. What we can tell you is this: any Medicare Advantage enrollee in Orange County, on any carrier, could receive a non-renewal letter this fall — Humana is simply the insurer that’s made the news first this cycle. The single most useful thing you can do right now isn’t to panic about Humana specifically. It’s to understand what your rights are the moment a non-renewal letter of any kind arrives.
The clock most people miss: your 63-day Medigap guaranteed-issue window
Everyone talks about the Medicare Annual Enrollment Period (October 15 – December 7) because it’s the window most seniors already know. But if your Medicare Advantage plan is non-renewed, you get a second, separate right that AEP alone doesn’t give you: a federally guaranteed 63-day window to buy a Medicare Supplement (Medigap) policy with no medical underwriting — meaning an insurer cannot deny you coverage or charge you more because of a pre-existing condition, including heart disease, diabetes, cancer history, or a recent hospitalization.
Outside of this guaranteed-issue window, insurers in most states can medically underwrite Medigap applications, which means a health condition can get you turned down or quoted a much higher premium. For an Orange County senior managing a chronic condition, that difference can be the deciding factor in whether a switch to traditional Medicare plus a Medigap plan is even realistic. The 63-day clock starts from the date your Medicare Advantage coverage actually ends — not the date the letter arrives — so tracking your own dates carefully matters more than trusting memory alone.
Medicare Advantage vs. Original Medicare + Medigap after a non-renewal
| Question | If you re-enroll in a new MA plan | If you switch to Original Medicare + Medigap |
|---|---|---|
| Underwriting | None — MA plans can’t deny you for health history | None during your 63-day guaranteed-issue window only |
| Provider network | Limited to the new plan’s network | Any provider nationwide who accepts Medicare |
| Extra benefits (dental, vision, hearing) | Often included | Not included — would need a separate plan |
| Monthly premium | Often $0-$50 | Medigap premiums typically run higher, but predictable |
| Out-of-pocket predictability | Annual maximum, but copays vary by service | Very predictable with a comprehensive Medigap plan |
| Need Part D separately? | Usually bundled in | Yes, a standalone Part D plan is required |
Mark the date your coverage actually ends — your 63-day guaranteed-issue window is counted from that date, not the letter’s postmark.
What to do the day your non-renewal letter arrives
The letter itself will name the last day your current plan covers you and will point you toward your options. Here’s the order that actually protects you:
1. Confirm the end date and write it down
Your 63-day guaranteed-issue window is calculated from your last day of Medicare Advantage coverage — usually December 31 of the current year for a non-renewal, but confirm the exact date printed in your letter rather than assuming.
2. Decide: new Medicare Advantage plan, or Original Medicare + Medigap
If you have specialists you don’t want to lose, ongoing treatment that benefits from nationwide provider access, or a health condition you’d rather not have re-underwritten later, this is the moment to seriously weigh Original Medicare with a Medigap policy — because the no-underwriting window won’t reopen once it closes.
3. Call California’s free counseling line before you call an insurance agent
California’s State Health Insurance Assistance Program (SHIP), known locally as HICAP (Health Insurance Counseling and Advocacy Program), offers free, unbiased Medicare counseling — including help confirming whether your specific plan change qualifies for guaranteed issue. An insurance agent earns a commission on what they sell you; a HICAP counselor doesn’t.
4. If you choose Medigap, apply inside the 63-day window — don’t wait for AEP to start
You do not need to wait until October 15 to apply for a Medigap policy under guaranteed issue. In fact, applying as soon as your non-renewal is confirmed reduces the risk of a coverage gap between your old plan ending and new coverage starting.
5. If you or a parent needs extra support managing the transition, ask for help
Comparing plans, gathering provider lists, and filling out enrollment paperwork is a lot to manage — especially for a senior juggling appointments, medications, and daily routines at the same time. A trusted caregiver or in-home support can make the difference between a smooth transition and a missed deadline.
A quick call to HICAP before enrolling anywhere can confirm your guaranteed-issue rights in minutes.
Your non-renewal action checklist
Click each item as you complete it.
Quick quiz: do you know your rights?
Frequently asked questions
Humana has not published a county-by-county list yet, so we can’t confirm which specific OC plans are affected. Watch your mail in early October — your letter, not a news article, is the authoritative source for your own plan.
If your plan isn’t being discontinued, you won’t receive one, and your coverage continues as normal into 2027 unless you choose to change it during AEP. If you’re ever unsure, call your plan’s member services line directly or contact HICAP to confirm your plan’s status.
No — they’re separate and can overlap. AEP (Oct 15 – Dec 7) is when anyone can change Medicare plans. The 63-day guaranteed-issue window is a special right triggered specifically by events like a plan non-renewal, and it protects you from medical underwriting on a Medigap application.
No — if your plan isn’t renewed and you don’t choose a new one, you’ll default back to Original Medicare with no drug coverage and no supplemental protection, which can mean higher out-of-pocket costs if you need care. Choosing a new plan before your coverage end date is strongly recommended.
Medicare Advantage and Medigap changes affect your medical coverage, not IHSS (which is a separate Medi-Cal program). But if your household relies on paid in-home support, it’s worth reviewing your full care plan whenever your medical coverage changes, since some MA plans include supplemental in-home benefits that Original Medicare does not.
HICAP counselors serve Orange County residents at no cost and can walk through your specific plan options over the phone. Medicare.gov’s Plan Finder tool is also free and lets you compare plans by ZIP code and prescription list.
If your family is navigating a Medicare Advantage change alongside a loved one’s daily care needs, you’re not alone — and you don’t have to sort it out by yourself. Related reading: our guide to Medicare Part D changes for 2027 covers what else is shifting in your ANOC letter this fall, and our piece on personalized home care looks at how the right in-home support can ease a stressful transition.
Managing a Medicare change and a loved one’s care at the same time?
At Home VA Staffing helps Orange County families coordinate compassionate, personalized in-home care during exactly these kinds of transitions. Call us at (213) 326-7452 to talk through your options.
Talk to Our TeamThis article is for general informational purposes only and is not medical, legal, or insurance advice. Medicare rules and guaranteed-issue rights can vary by individual circumstance. Always confirm your specific situation with California’s HICAP program, Medicare.gov, or a licensed Medicare counselor before making enrollment decisions.
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