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HomeMedicare 2026IowaSioux CitySioux City Medicare AEP: 2027 Coverage Choices

Medicare 2026

Sioux City Medicare AEP: 2027 Coverage Choices

Sioux City, Iowa — The clock is ticking on Medicare's Annual Enrollment Period. From now through December 7, people with Medicare in Woodbury County can review their coverage, switch plans, or make changes that will take effect January 1, 2027. After that date, most options close until next fall.

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2027 PLAN ALERT

Medicare Advantage plans in your area are changing or leaving for 2027.

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Annual Enrollment: Oct 15 – Dec 7

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BEFORE YOU ENROLL

Found a plan you like online?

One free call confirms it's actually right for you — online directories are wrong more often than you'd think.

  • Your doctors — confirmed in-network for 2027
  • Your prescriptions — checked against the plan's 2027 drug tiers
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Key takeaways

  • The Medicare Annual Enrollment Period runs from October 15 through December 7, and any changes made take effect January 1, 2027.
  • If you do nothing, your current plan generally renews automatically, but premiums, drug lists, and provider networks can still change.
  • Reviewing your Annual Notice of Change (ANOC) letter and checking your doctors, prescriptions, and income against the 2026 IRMAA threshold of $109,000 for single filers can help you spot changes that matter.
  • After December 7, most people must wait for the Medicare Advantage Open Enrollment Period from January 1 to March 31, 2027, which allows only one plan switch or a return to Original Medicare.

Here is what you can actually do during this window, and how to think it through without rushing.

What the Annual Enrollment Period Is

The Annual Enrollment Period (AEP) runs every year from October 15 through December 7. It's the main time each year when anyone with Medicare can:

Any change you make during AEP takes effect January 1, 2027. If you do nothing, your current coverage generally renews automatically — but that doesn't mean it stays the same. Premiums, drug lists, and provider networks often change from year to year, which is why a quick review matters.

Why This Year's Review Is Worth the Time

A few things are different heading into 2027, and they affect what your drug coverage looks like:

These are program-wide rules set by the Centers for Medicare & Medicaid Services (CMS) — they apply no matter which plan you choose.

Read Your Annual Notice of Change

If you're already in a Medicare Advantage or Part D plan, you should have received an Annual Notice of Change (ANOC) by late September. It's usually a thick envelope. Don't toss it.

The ANOC spells out what's changing in your plan for 2027 — premium, deductible, copays, drug tier changes, and any changes to the provider or pharmacy network. Comparing this year's ANOC to what you have now is the single most useful thing you can do in an hour on the couch.

How to Decide if a Change Makes Sense

There's no one-size-fits-all answer, but a good checklist looks like this:

1. Are your doctors still in network? Call your clinic or check the plan's provider directory. Networks in Sioux City and the surrounding Siouxland region can shift year to year. 2. Are your prescriptions still covered? Look at the plan's 2026 formulary. Sometimes a drug moves to a higher tier or gets removed. 3. Do you travel or spend time out of state? That affects whether Original Medicare plus a standalone drug plan might fit better than a network-based plan. 4. Has your health changed? More appointments, new specialists, or a new diagnosis can shift which structure works. 5. Is your income near an IRMAA threshold? In 2026, higher Part B and Part D premiums start above $109,000 in income for a single filer (higher for joint filers). If your income has dropped due to a life event like retirement, you can ask Social Security to reconsider.

Where to Get Unbiased Help in Sioux City

You don't have to figure this out alone, and you don't have to talk to a salesperson to get answers.

Sioux City sits at the corner of Iowa, Nebraska, and South Dakota, so if you live across the river, each state has its own SHIP program that provides the same kind of free help.

What Happens if You Miss December 7

If December 7 passes and you didn't make changes, your current plan generally continues into 2027 as-is.

You still have one more limited window: the Medicare Advantage Open Enrollment Period, January 1 – March 31, 2027. During those months, people already enrolled in a Medicare Advantage plan can switch to a different Medicare Advantage plan or drop back to Original Medicare (and add a Part D plan). It's narrower than AEP — you can only make one change, and it doesn't apply to people on Original Medicare who want to join Advantage for the first time.

Outside those windows, you generally need a Special Enrollment Period, which requires a qualifying event like moving or losing other coverage.

By the numbers

Medicare Part B premium, 2006–2026

The standard monthly Part B premium has climbed from $88.50 in 2006 to $202.90 in 2026. Hover any point for that year’s premium.

$0$50$100$150$200200820122016202020242026

Source: CMS. Standard premium shown; in some hold-harmless years many existing enrollees paid less. Confirm at Medicare.gov.

By the numbers

How people get Medicare in Woodbury County

46% are on Medicare Advantage
(MA penetration in Woodbury County)
46%
54%
Medicare Advantage Medicare Supplement (Medigap) Original Medicare only
U.S. average

MA penetration from CMS enrollment data; Medigap share is an estimate. U.S. average is about 54% Medicare Advantage. These are area-level figures, not plan-specific.

Key dates

Medicare enrollment periods at a glance

  • Around your 65thInitial Enrollment PeriodA 7-month window around the month you turn 65 — your first chance to sign up.
  • October 15 – December 7Annual Enrollment PeriodAnyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan.
  • January 1 – March 31Medicare Advantage Open EnrollmentIf you're already in a Medicare Advantage plan, you can make one change.
  • January 1 – March 31General Enrollment PeriodFor people who missed their first chance to sign up for Part B.
  • VariesSpecial Enrollment PeriodTriggered by life events like moving or losing other coverage.

Dates are set by Medicare and apply nationwide. Confirm your personal windows at Medicare.gov or 1-800-MEDICARE.

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Medicare Advantage companies in Woodbury County

By local enrollment size · informational, not a ranking
CompanyLocal enrollmentPlans offeredLocal agentsAction
Aetna (CVS Health)National—Yes
Blue Cross Blue Shield of Michigan Mutual Ins CoRegional—Yes
HumanaNational—Yes
UnitedHealthcareNational—Yes
Centene (WellCare)National—Yes
Siouxland Pace INCRegional—Yes
Enrollment data: CMS Medicare Advantage enrollment by company (county level). Figures shown are illustrative sample data pending the current CMS file. Listed by enrollment size, largest first — this is not a ranking, recommendation, or endorsement of any company or plan.

Provided by licensed insurance partners; MyMedicarePlans.org may be compensated. Not a ranking or endorsement of any plan.

Explore

When can you enroll? An interactive year

JFMAMJJASOND
October 15 – December 7 — anyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan. Changes take effect January 1.

Enrollment windows are federal and the same nationwide. Confirm your personal dates at Medicare.gov or 1-800-MEDICARE.

Explore

The parts of Medicare

Part A covers inpatient hospital stays, skilled nursing facility care, hospice, and some home health care. Most people pay no premium for Part A.

Good to know

Frequently asked questions

Do I have to do anything during AEP if I like my plan?
No. If you're happy with your coverage and your ANOC doesn't show changes that concern you, you can stay put. Just make sure you've actually read the ANOC — "no news" isn't the same as "no changes."
Can I switch Medigap (Medicare Supplement) plans during AEP?
AEP is for Medicare Advantage and Part D. Medigap has its own rules and is regulated at the state level. In Iowa, you can apply for a Medigap policy at any time, but outside your one-time initial open enrollment, insurers can use medical underwriting. SHIIP can walk you through the details.
What are Star Ratings?
CMS rates Medicare Advantage and Part D plans on a 1-to-5 scale based on things like customer service, member complaints, and preventive care. They're one data point among many — not a substitute for checking whether your doctors and drugs are covered.
Sources & further reading
  • CMS — Medicare enrollment periods (medicare.gov)

For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.

Medicare plans in your area changing for 2027 — check yoursCall