Medicare Supplement

Medigap in Grand Prairie: how Texas standardizes the plan letters you can buy

Shopping for a Medicare Supplement policy in Grand Prairie can feel like decoding an alphabet. Plan A, Plan G, Plan N, high-deductible versions — the letters look scattered, but they are actually the point. Every Medigap plan sold in Texas follows a federal template, which means a Plan G from one insurer covers the same medical costs as a Plan G from another. What changes is the company behind the letter, not what the letter pays.

Medicare SupplementGrand Prairie, TX

Grand Prairie sits across Dallas, Tarrant and Ellis counties, but Medigap rules are set at the state and federal level, so the same plan letters and the same insurers are available across the city.

What Medigap is — and what it is not

Medigap is private insurance that helps pay some of the out-of-pocket costs Original Medicare leaves behind, such as coinsurance, copayments and the Part A hospital deductible. It rides along with Original Medicare; it does not replace it.

Two things Medigap does not do: it does not work with a Medicare Advantage plan, and it does not include prescription drug coverage. If you want drug coverage, you enroll in a separate Part D plan.

The plan letters you can buy in Texas today

Texas follows the federal standardized Medigap chart. If you became eligible for Medicare on or after January 1, 2020, the letters open to you are A, B, D, G, high-deductible G, K, L, M and N. Plans C and F — which cover the Part B deductible — are only available to people who were eligible for Medicare before that date.

The letters are not a ranking. Plan A covers the core benefits every Medigap policy must include. Plans G and N are the most widely sold letters for newer enrollees. Plans K and L cap your out-of-pocket spending but pay a smaller share of certain costs. High-deductible G asks you to pay more up front in exchange for a lower monthly premium. Plan M and Plan D are less common but still standardized.

Because every insurer must sell the same benefits under the same letter, a Plan G covers the same medical costs no matter whose name is on the card.

Who sells Medigap around Grand Prairie

The table below lists every insurer approved to sell Medigap in Texas along with the specific letters each one offers. Some carriers, such as AARP - UnitedHealthcare Insurance Company and United American Insurance Company, offer a long list of letters; others, such as Texas Farm Bureau Health Plans or Old Surety Life Insurance Company, offer a shorter set. The list is alphabetical, not a ranking.

Because benefits within a letter are standardized, the practical differences between insurers tend to be things like customer service, household discounts, how they handle rate changes over time, and whether they use medical underwriting outside your open enrollment window.

How Medigap pairs with Part D in 2026

Medigap handles the gaps in Parts A and B. For prescriptions, you add a stand-alone Part D plan.

A few 2026 Part D facts worth knowing as you shop:

• The Part D out-of-pocket cap is $2,100 for 2026.
• The maximum Part D deductible is $615.
• The old coverage gap (“donut hole”) is gone as of 2025; Part D now has three phases.
• The Medicare Prescription Payment Plan lets you spread your drug costs across monthly payments instead of paying large amounts at the pharmacy counter.
• Income-related premium surcharges (IRMAA) start above $109,000 in income for a single filer in 2026.

You can join or change a Part D plan during the Annual Enrollment Period, October 15 through December 7.

Texas rules that shape your choice

The single most important rule in Texas is federal: your Medigap Open Enrollment Period is a one-time, six-month window that begins the month you are 65 or older and enrolled in Part B. During that window, insurers must sell you any Medigap plan they offer, at their published rate, without asking health questions.

Outside that window, Texas generally allows medical underwriting, meaning an insurer can review your health and decide whether to offer you a policy, unless you qualify for a federal guaranteed-issue right (for example, if certain other coverage ends). Texas does not have a statewide “birthday rule” like some other states.

For questions about your specific rights — including guaranteed-issue situations — the Texas Department of Insurance and the state’s SHIP program (the Health Information, Counseling and Advocacy Program) can walk you through your options at no charge.