Medicare 2026

Medigap Coverage and Letter Plans in Bluffton, SC

# Original Medicare with a Medigap plan vs. Medicare Advantage: how to think it…

BLUFFTON, S.C. — If you're turning 65 in the Lowcountry, or thinking about switching your coverage during the fall enrollment window, you've probably run into the big fork in the road: stay with Original Medicare and add a Medigap policy, or go with a Medicare Advantage plan instead. Both are legitimate paths. They're just built very differently, and the right fit depends on how you like to get care, travel, and handle costs.

Here's a plain-language walk-through to help you think it through.

Two different structures, not two versions of the same thing

Original Medicare is the federal program run directly by the government. It has two main parts: Part A (hospital) and Part B (doctor and outpatient). You can see any doctor or hospital in the country that accepts Medicare, and most do. There's no network and no referrals.

Medicare Advantage (Part C) is different. It's private insurance that replaces the way you get your Part A and Part B benefits. The plan is still regulated by Medicare, but the insurance company manages your care — usually through a network of doctors and hospitals, sometimes with referral rules, and often with extra benefits bundled in like dental, vision, or a drug plan.

That's the core split. One is government coverage you can pair with add-ons. The other is a private, all-in-one package.

Where Medigap fits in

Medigap (also called Medicare Supplement Insurance) only works with Original Medicare. It's a separate policy you buy from a private insurer to help cover the out-of-pocket pieces Original Medicare leaves behind — things like the Part A hospital deductible and the 20% coinsurance on Part B services.

A few things to know about Medigap:

• You can't use a Medigap policy with a Medicare Advantage plan. It's one road or the other.
• Medigap policies don't include drug coverage, so you'd add a stand-alone Part D plan.
• Your best pricing and guaranteed acceptance usually come during your 6-month Medigap Open Enrollment Period, which starts when you're 65 and enrolled in Part B. Outside that window, in most states, insurers can consider your health history.

How costs tend to feel different

This is where the two paths really diverge in daily life.

With Original Medicare + Medigap + a Part D drug plan, you're generally paying more in monthly premiums (Part B, Medigap, and Part D), but your costs at the doctor or hospital are more predictable. Many Medigap policies leave you with little to pay after Medicare's share.

With Medicare Advantage, monthly premiums are often lower, but you pay copays and coinsurance as you use care, up to the plan's annual out-of-pocket maximum. If you have a heavy care year, you could hit that maximum; if you barely use the plan, you might pay very little.

Neither structure is cheaper for everyone. It depends on your health, your prescriptions, and how often you see specialists.

A few 2027 numbers worth knowing

Some Medicare figures are set at the program level and apply no matter which path you choose:

• Part D out-of-pocket cap: $2,100 in 2026 and $2,400 in 2027. Once your covered drug costs hit that amount, you pay nothing for covered drugs the rest of the year.
• Part D maximum deductible: $615 in 2026 and $700 in 2027.
• The coverage gap (the old "donut hole") is gone as of 2025. Part D now has three phases instead of four.
• Medicare Prescription Payment Plan: an optional program that lets you spread your drug costs out over the year in monthly payments instead of paying all at once at the pharmacy.
• IRMAA: higher-income surcharges on Part B and Part D start above $109,000 in income for a single filer in 2026.

These rules come straight from Medicare. You can verify them at medicare.gov.

What's available around Bluffton

Bluffton is in Beaufort County, and plan availability in Medicare is set at the county level. That means the Medicare Advantage and Part D plans you can shop are the ones offered in Beaufort County — the same list a neighbor in Hilton Head or Beaufort would see. Medigap works differently: it's regulated at the state level in South Carolina, so the policy types you can buy aren't tied to your county.

When you compare plans on Medicare.gov's Plan Finder, entering your ZIP code pulls the county's options. It's worth doing that yourself rather than relying on a mailer, because the tool shows every plan available, not just the ones being advertised.

Key dates to keep in mind

• Annual Enrollment Period: October 15 – December 7, 2026. This is when anyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan for 2027 coverage.
• Medicare Advantage Open Enrollment Period: January 1 – March 31. If you're already in an Advantage plan, you get one chance in this window to switch to a different Advantage plan or go back to Original Medicare (and pick up a Part D plan).
• Your Initial Enrollment Period around your 65th birthday is a 7-month window and is often the cleanest time to set up your original coverage — including a Medigap policy under guaranteed-issue rules.