Medicare Supplement
Switching Medigap in Slidell: the federal rights and state rules that decide your window
SLIDELL, La. — If you have a Medicare Supplement (Medigap) policy and you have been wondering whether you can move to a different one, the answer is almost always "yes, but the timing matters." When you switch, and where you live, decides whether an insurer can ask about your health — or has to take you no matter what.
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Click to call 855-729-3240Key takeaways
- Outside your one-time Medigap Open Enrollment Period, insurers in most states can use medical underwriting when you apply to switch.
- Federal guaranteed-issue rights protect you in specific situations, like losing other coverage or a plan leaving your area.
- Some states add a birthday rule, an anniversary rule, or year-round open enrollment — check with Louisiana's SHIP before you assume.
- Slidell is in St. Tammany Parish; local plan availability is set at the parish level, not the city level.
Here in Slidell, the rules that shape a Medigap switch come from two places: federal law, which gives every person on Medicare certain "guaranteed-issue" rights, and Louisiana state law, which can add extra windows on top. Knowing which one applies to you is the difference between a smooth change and a surprise denial.
The one window everyone gets: Medigap Open Enrollment
The strongest protection is your six-month Medigap Open Enrollment Period. It starts the month you are 65 or older AND enrolled in Medicare Part B. During those six months, any Medigap insurer selling policies in Louisiana must sell you one at the same price a healthy person pays. They cannot turn you down or charge more because of your health history.
This window happens once. After it closes, the rules change — and that is where many Slidell readers get tripped up.
What "medical underwriting" really means
Once your one-time open enrollment ends, most Medigap applications are subject to medical underwriting. That means the insurer can ask health questions, look at your prescriptions, and decide whether to accept you, charge you more, or say no.
Underwriting is not automatic denial. Plenty of people pass it. But if you have certain conditions, you may not — which is why it is smart to know your rights before you drop your current policy. Never cancel Plan A until Plan B has said yes in writing.
Federal guaranteed-issue rights
Federal law lists specific situations where an insurer must sell you a Medigap policy without underwriting, even outside your open enrollment window. These "guaranteed-issue" rights generally apply when:
- Your Medicare Advantage plan leaves your service area or you move out of its area.
- You joined Medicare Advantage when you first became eligible and want to switch back within 12 months (a "trial right").
- Your employer or union coverage is ending.
- Your Medigap insurer goes bankrupt or misled you.
Each situation has its own time limit — often 63 days — and its own list of which Medigap plans you can pick from. Medicare.gov keeps the current list of these rights, and it is worth reading before you assume you qualify.
The state layer: birthday, anniversary and year-round rules
Some states have added their own consumer protections that go beyond federal law. You may have heard of a "birthday rule" (a short window around your birthday to switch to an equal or lesser plan without underwriting), an "anniversary rule" (a window tied to your policy's renewal), or continuous open enrollment (you can switch any time of year).
These rules vary widely. A birthday rule in one state may last 30 days; in another, 60. Some apply only to switching between the same lettered plan; others are broader.
Because state Medigap rules can change, and because we do not want to guide you off outdated information, the safest step for a Slidell reader is to confirm what Louisiana currently allows before you apply. Two free places to check:
- Louisiana SHIIP (Senior Health Insurance Information Program), the state's SHIP, offers free one-on-one counseling.
- Louisiana Department of Insurance, which regulates Medigap policies sold in the state.
Both can tell you, in plain language, whether a state rule opens a door for your situation.
A sensible order of operations
If you are thinking about a switch here in St. Tammany Parish, a calm sequence helps:
1. Write down why you want to change — price, service, a plan letter that fits you better. 2. Check whether a federal guaranteed-issue right applies to your situation. 3. Ask Louisiana SHIIP whether any state rule gives you an extra window. 4. If neither applies, ask an insurer to underwrite you before you cancel anything. 5. Only cancel your old policy after the new one is approved and in force.
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.
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 St. Tammany Parish
(MA penetration in St. Tammany Parish)
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.
Explore
The parts of Medicare
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When can you enroll? An interactive year
Enrollment windows are federal and the same nationwide. Confirm your personal dates at Medicare.gov or 1-800-MEDICARE.
Good to know
Frequently asked questions
Can I switch Medigap plans any time of year?
Does the Medicare Annual Enrollment Period (Oct. 15 – Dec. 7) apply to Medigap?
If I switch from Medicare Advantage back to Original Medicare, can I get a Medigap policy?
Who can I call for free help in Slidell?
- CMS — Medicare Supplement Insurance (Medigap) rules (medicare.gov)
For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.
Also for Slidell
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This page was last updated: September 2026.