Medigap in one sentence

A Medicare Supplement policy — almost everyone calls it Medigap — is private insurance you buy to sit alongside Original Medicare and pay much of what Medicare leaves to you. It is not a replacement for Medicare and it is not the same thing as Medicare Advantage. Medicare pays its share first; the Medigap policy picks up a large part of what would otherwise come out of your pocket.

For people in Rock Hill, Fort Mill, Tega Cay, Indian Land and York, Medigap has one characteristic that stands out from everything else on this page: it has no network. We come back to why that matters so much at a state line.

The gaps it is built for

Original Medicare covers a great deal and still leaves real exposure, and it has no annual limit on what you can be asked to pay. In 2026 that exposure includes:

  • The Part A hospital deductible of $1,736 per benefit period — and you can have more than one benefit period in a single year.
  • Hospital coinsurance of $434 a day for days 61 through 90, and $868 a day for lifetime reserve days 91 through 150.
  • The $283 annual Part B deductible, and then a share of the cost of most Part B services with no yearly ceiling on your side of it.

That last point is the one that drives most Medigap purchases. Under Original Medicare alone there is no cap, so one serious year can produce an unpredictable bill. Medigap exists to make that predictable.

Standardized by letter

Medigap plans are standardized and named by letters. A plan with a given letter provides the same core benefits no matter which company sells it, so companies compete mainly on price, service and how they handle rate increases over time — not on the benefits themselves. That is unusual in insurance and it is genuinely useful: it means the comparison is narrow enough to do properly.

We will not tell you one letter or one company is better than another. Which plan letter fits depends on how you want to balance a monthly premium against what you pay when you use care, and that is a conversation about your situation, not a league table.

The window that matters most

Medigap timing has consequences that almost nothing else in Medicare has. Your Medigap Open Enrollment Period is the six months beginning with the first month you are 65 and enrolled in Part B. Inside those six months you can buy any Medigap policy sold here without answering a single health question, and your health cannot be used to turn you down or price you differently.

Once that window closes, insurers can generally use medical underwriting — health questions, and the possibility of being charged more or declined — unless a separate guaranteed-issue right applies. This is the single most consequential piece of timing in Medicare, and it is why we would rather talk to someone six months early than six months late. It sits alongside, but is separate from, the 7-month Initial Enrollment Period around your 65th birthday and the October 15 to December 7 Annual Enrollment Period — those govern Medicare Advantage and Part D, not Medigap. All of them are set out on when you can enroll in Medicare.

Under 65 in South Carolina — the part nobody tells you

Federal law does not require insurers to sell Medigap to people under 65 who have Medicare because of a disability or end-stage renal disease. Each state decides for itself, and this is where South Carolina diverges sharply from the states around it.

South Carolina has no law requiring private insurers to sell Medigap to people under 65. Access runs through the state pool instead. That is a materially harder position than our neighbors, and we would rather say it plainly than let someone discover it during an application. If you came to Medicare before 65 — through Social Security Disability Insurance after the 24-month wait, or through end-stage renal disease, or through ALS, which skips the wait entirely — your Medigap options in this state are limited in a way they would not be a few miles north.

Now the part that matters just as much, because people under 65 often assume the door is shut for good: it is not. A full Medigap Open Enrollment Period still opens at 65 — the same six months beginning with the first month you are 65 and enrolled in Part B, with no health questions. A decision made at 52 or 61 is not your last chance. We have had this conversation with people who spent years believing otherwise.

In the meantime, many people under 65 use a Medicare Advantage plan, which is not underwritten on health in the same way. One piece of context, offered as context only: South Carolina has not expanded Medicaid, which is part of the landscape for people under 65 working through the waiting period before Medicare starts. The Jordan Insurance Agency helps with Medicare. We do not sell or advise on Medicaid, and we will point you to the right agency rather than guess at it.

Why no network is the South Carolina argument

Here is the practical case for Medigap in York County, and it is a stronger one here than in most places.

Medigap pairs with Original Medicare, and Original Medicare has no network. You can see any doctor or hospital in the country that accepts Medicare. There is no in-network list to check, no referral structure, and no question about whether a provider is on the right side of a state line.

A great many people here keep doctors in two states — a primary care physician in Rock Hill and specialists in Charlotte, or the reverse after years of commuting. With a network plan, that arrangement has to be verified provider by provider and re-verified when plans change. With Original Medicare and a Medigap policy, the question does not arise. You pay more every month for that, and for some households it is obviously worth it and for others it is not. Our Medicare guide for Fort Mill goes further into how care splits across the line locally.

What Medigap does not do

  • No prescription drug coverage. Medigap does not include it. Most people who choose Medigap add a stand-alone Part D plan, because a gap of 63 days or more without creditable prescription drug coverage can attach a permanent penalty to your premium later.
  • It is not combined with Medicare Advantage. These are two different roads. You take Original Medicare with a Medigap policy and a drug plan, or you take a Medicare Advantage plan. Not both.
  • It does not pay for long-term custodial care. Neither does Medicare. That is a separate planning conversation and worth having before it is urgent.

How The Jordan Insurance Agency helps

The Jordan Insurance Agency serves South Carolina from our Charlotte office at 3540 Toringdon Way, Suite 200, Charlotte, NC 28277. Call (704) 926-7565, Monday through Friday, 9:00 AM to 5:00 PM ET. The office is on the North Carolina side of the line, and most of our South Carolina clients handle this by phone or video rather than making the drive — which works perfectly well for a conversation like this one.

Because Medigap benefits are standardized, the useful work is comparison and timing: which companies are competitive for your age and situation, how their rates have behaved over time, and above all whether you are inside the window where health questions do not apply. If you are under 65, we will tell you honestly what South Carolina does and does not require, and we will not dress it up. A consultation with a licensed agent is free, and we would far rather have it early than fix something afterwards.