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Medicare Advantage in Gretna, Louisiana (2027): How It Works

For Gretna, 64 Medicare Advantage plans are available across Jefferson Parish for 2026. This guide cuts through the noise: how Medicare Advantage works, how it differs from Original Medicare plus Medigap, and what to weigh — not which plan to pick.

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Quick answer

In Gretna (Jefferson Parish), 66 Medicare Advantage plans are offered for 2027, compared with 64 for 2026.

For 2027, 10 of the Medicare Advantage plans offered in Jefferson Parish for 2026 are leaving and 12 are new, while 16 continuing plans change premium, drug deductible, plan type or name.

In Jefferson Parish, which includes Gretna, about 72% of people with Medicare were in a Medicare Advantage plan in 2026.

Medicare Advantage in Gretna: key facts (2027)
FactFigureSource
Medicare Advantage plans offered in Jefferson Parish, 202766CMS MA Landscape Source Files, CY2026 and CY2027
Medicare Advantage plans offered in Jefferson Parish, 202664CMS MA Landscape Source Files, CY2026 and CY2027
Plans leaving after 202610CMS MA Landscape Source Files, CY2026 and CY2027
Plans new for 202712CMS MA Landscape Source Files, CY2026 and CY2027
Continuing plans that change for 202716CMS MA Landscape Source Files, CY2026 and CY2027
People with Medicare in Jefferson Parish, 202694,678CMS county data and Census ACS (2026)
Share in Medicare Advantage in Jefferson Parish, 202672%CMS State/County MA Penetration (2026)

Medicare Advantage chart

Gretna (Jefferson Parish) Medicare Advantage plans comparison chart (2027)

How many Medicare Advantage plans are offered in Gretna (Jefferson Parish), by plan type, for 2027. Counts only: no plan is ranked, and premiums and benefits are not shown (compare those for your ZIP code with the plan finder above or on Medicare.gov).

Gretna (Jefferson Parish) Medicare Advantage plans by type, 2027
Plan type2027
All Medicare Advantage plans66
What changes in Gretna (Jefferson Parish) from 2026 to 2027
ChangeCount
Medicare Advantage plans offered for 202664
Medicare Advantage plans offered for 202766
Offered for 2026, not offered for 2027 (leaving)10
New for 202712
Continuing with a different premium, drug deductible, plan type or name16

Source: CMS MA Landscape Source Files, CY2026 and CY2027. — = not in the source data.

By ZIP code

Medicare plans by ZIP code in Gretna

Gretna covers 1 ZIP code in Jefferson Parish, where 66 Medicare Advantage plans are offered for 2027 (64 for 2026). Medicare plans are offered county by county, so every ZIP code in a county has the same Medicare Advantage lineup. Enter your ZIP code in the plan finder at the top of this page to compare the plans offered there.

Gretna, Louisiana ZIP codes and their county
ZIP codeCounty
70053Jefferson Parish

Sources: ZIP codes, GeoNames US postal codes (CC BY 4.0), limited to Census ZCTAs. Counts only; no plan is ranked.

Good to know

Medicare Advantage in Gretna: questions (2027)

How many Medicare Advantage plans are available in Gretna for 2027?
In Gretna (Jefferson Parish), 66 Medicare Advantage plans are offered for 2027, compared with 64 for 2026. For 2027, 10 of the Medicare Advantage plans offered in Jefferson Parish for 2026 are leaving and 12 are new, while 16 continuing plans change premium, drug deductible, plan type or name. Plans are approved by county, so the count is the same across Jefferson Parish.
Are Medicare Advantage plans different by ZIP code in Gretna?
Medicare Advantage plans are approved county by county, so ZIP codes in the same county have the same plans. The ZIP code table on this page lists Gretna's ZIP codes and their county; enter yours in the plan finder to compare the plans offered there.
What does Medicare cost in Gretna for 2027?
Program-level costs are the same everywhere: the standard Part B premium is $202.90/month for 2026 (2026 amount; 2027 figure will be posted when CMS releases it), and Part D drug costs are capped at $2,400 out of pocket for the year in 2027. What an individual plan charges varies by plan; we don't publish those figures or rank plans.
When can I enroll or switch in Gretna?
Enrollment windows are federal and the same nationwide — most changes happen during the Annual Enrollment Period each fall (October 15 – December 7). See the calendar on this page for the full schedule.
23 Medicare Advantage plans here are rated 4 stars or higher for 2027, of the 66 offered in Jefferson Parish (2027 CMS Star Ratings). See top-rated plans in Jefferson Parish →Every year, Medicare evaluates plans based on a 5-star rating system.

Here's the Gretna picture in plain terms. Your county sets your Medicare options, and Gretna sits in Jefferson Parish (part of Gretna area) — so that's the lens for everything below.

Insurers offer 64 Medicare Advantage plans across 8 organizations for 2026. Roughly 72% of people with Medicare in the county have chosen Medicare Advantage over Original Medicare. Those are factual, area-level counts — we don't rank plans.

Expect the companies active locally, a jargon-free walkthrough of how Medicare works, the 2027 costs, the enrollment calendar, and free help when you want a person to talk to.

Medicare Advantage companies in Jefferson Parish

By local enrollment size · informational, not a ranking
CompanyLocal enrollmentPlans offeredLocal agentsAction
HumanaNational—Yes
UnitedHealthcareNational—Yes
Aetna (CVS Health)National—Yes
Louisiana Health Service & Indemnity CompanyRegional—Yes
Centene (WellCare)National—Yes
Devoted Health IncRegional—Yes
Enrollment data: CMS Medicare Advantage enrollment by company (county level). Listed by enrollment size, largest first — this is not a ranking, recommendation, or endorsement of any company or plan.

How your Medicare choices fit together

Almost everyone starts with Original Medicare — Part A (hospital) and Part B (medical), run by the federal government. From there, you generally choose one of two directions, and understanding the fork is the whole game.

The Medicare Advantage path (Part C). You get your Part A and Part B benefits through a private plan approved by Medicare, usually with drug coverage included. Plans work within networks and service areas set at the county level, which is why availability in Gretna, Louisiana depends on your county, not just your state.

The Original Medicare path. You stay with the government program and can add a stand-alone Part D drug plan, and often a Medigap policy to help with the out-of-pocket costs Original Medicare leaves behind — trading bundled extras for broad provider freedom.

Neither path is universally better; the right fit depends on your doctors, your prescriptions, your budget, and how you like to handle care. This guide explains how each works in Gretna, Louisiana so you can decide for yourself. We don't rank or recommend specific plans.

By the numbers

How people get Medicare in Jefferson Parish

58% are on Medicare Advantage
(MA penetration in Jefferson Parish)
58%
18%
24%
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.

MM
ED
AI
By MyMedicarePlans Data Desk · Plan Landscape & Data✓ Verified Team
✓ Reviewed for the 2027 plan year·● Gretna, LA
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Photo: Gustavo Fring on Pexels

What Medicare costs in 2027

It helps to separate the costs everyone shares from the costs that vary by plan. The program-level numbers here are set nationally — the same whether you're in a big city or a rural county.

Part B premium. Most people pay the standard Part B premium of $202.90 a month in 2026 (2026 amount; 2027 figure will be posted when CMS releases it). Part A is premium-free for most people who worked and paid Medicare taxes long enough.

Part D drug costs. In 2027, a Part D plan's yearly deductible can be no more than $700, and a $2,400 cap limits what you pay out of pocket for covered prescriptions across the year — a real change for anyone with high drug costs.

Higher earners pay more for Parts B and D through an income-related adjustment called IRMAA, which for 2026 starts above $109,000 in annual income for an individual and is based on your 2024 tax return. Most people fall below that line and pay the standard amounts. The 2027 brackets will be posted when CMS releases them.

Plan-specific costs. What an individual plan charges — its premium, deductible, copays, and what it covers — varies by plan and changes yearly. We don't publish those figures or rank plans; Medicare's Plan Finder shows the current details for your situation, and a licensed agent can walk you through them.

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.

When you can enroll or make changes

Medicare's enrollment windows are federal — the same nationwide — so the timing below applies wherever you live.

Your first window (IEP). When you're new to Medicare, your Initial Enrollment Period is the 7-month window around your 65th birthday month. Signing up on time helps you avoid late penalties that can follow you for years.

Annual Enrollment Period (AEP). Each fall, from October 15 – December 7, anyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan. Changes take effect January 1.

Medicare Advantage Open Enrollment. From January 1 – March 31, if you're already in an Advantage plan you get one chance to switch plans or return to Original Medicare.

Special Enrollment Periods can also open after certain life events, like moving or losing other coverage. The interactive calendar further down lays the year out visually.

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.

Where to get free, unbiased help near Gretna

Good Medicare help exists and it's free — you don't have to figure this out solo or pay for guidance.

For official specifics and the Plan Finder tool, go straight to Medicare.gov or 1-800-MEDICARE (TTY 1-877-486-2048). And a licensed agent can compare options and handle the paperwork with you.

One note on who we are: MyMedicarePlans.org is an independent, privately owned educational resource — not Medicare, not a government agency, and not affiliated with one. Our job is to help you get oriented, then hand you off to the official sources and licensed professionals for plan decisions.

Latest Medicare Advantage guides for Gretna

Medicare in Gretna: 2027 Options, Jefferson Parish2026-08-31Medicare Star Ratings 2027: Gretna, LA guide2026-08-26

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