By Jennifer Mauldin | Mauldin Insurance Group | Lexington, South Carolina

If you're turning 65, enrolling in Medicare for the first time, or simply reviewing your current coverage, one question comes up more than any other: Should I choose a Medicare Supplement (Medigap) plan or a Medicare Advantage plan?

The honest answer? It depends on your health, your budget, your doctors, and how you plan to use your insurance. There's no one-size-fits-all solution — and that's exactly why we created this guide.

At Mauldin Insurance Group in Lexington, SC, Jennifer Mauldin has helped hundreds of South Carolinians navigate this exact decision. This guide gives you a clear, side-by-side breakdown so you can walk into your next conversation fully informed.

 

First: Understanding the Basics

Before comparing the two options, let's set the foundation:

• Original Medicare (Parts A & B) covers hospital and medical services but leaves significant gaps — including deductibles, coinsurance, and no out-of-pocket maximum.
• Medicare Supplement (Medigap) plans fill in those gaps. You pay a monthly premium, but your out-of-pocket costs are highly predictable.
• Medicare Advantage (Part C) plans replace Original Medicare entirely. Run by private insurers approved by Medicare, they often include extra benefits but come with network and authorization requirements.

 

Side-by-Side Comparison: 2026 South Carolina

 

Category	Medicare Supplement	Medicare Advantage
Monthly Premium (2026 SC avg)	$80–$280/mo depending on plan letter	$0–$60/mo (many $0 premium plans)
Doctor Network	Any doctor that accepts Medicare — nationwide	In-network HMO/PPO — varies by plan & county
Referrals Required?	No referrals needed for specialists	Often required for HMO plans
Out-of-Pocket Max	Very limited — most costs covered by supplement	Capped by law (avg ~$4,000–$8,000/year)
Prescription Drugs	Requires separate Part D plan ($20–$70/mo)	Usually included — check formulary
Extra Benefits	None beyond Original Medicare	May include dental, vision, hearing, fitness
Travel Coverage	Full — works anywhere in the U.S.	Limited — usually emergencies only outside area
Prior Authorization	Minimal — Original Medicare guidelines apply	Common — plan approval required for many services
Flexibility to Change Plans	Can switch at any time (with underwriting)	Changes during AEP (Oct 15–Dec 7) or SEP
Best For...	Those who want predictable costs & freedom	Those who want lower premiums & extra perks

 

Pros and Cons: Medicare Supplement in SC

 

✔ Pros — Medicare Supplement	✘ Cons — Medicare Supplement
✔ Predictable monthly costs — no surprise bills	✘ Higher monthly premium than Advantage
✔ See any doctor who accepts Medicare — nationwide	✘ Requires a separate Part D drug plan
✔ No referrals, no prior authorizations	✘ In SC, underwriting applies outside Open Enrollment
✔ Ideal for frequent travelers or snowbirds	✘ No extra benefits like dental or vision
✔ Peace of mind — coverage is consistent year to year	✘ Premium can increase over time with age

 

Pros and Cons: Medicare Advantage in SC

 

✔ Pros — Medicare Advantage	✘ Cons — Medicare Advantage
✔ Low or $0 monthly premium — very budget-friendly	✘ Networks can limit which doctors you see
✔ Often includes drug coverage (Part D bundled in)	✘ Referrals & prior authorizations are common
✔ Extra benefits: dental, vision, hearing, fitness	✘ Travel coverage limited to emergencies
✔ Out-of-pocket maximum protects against catastrophic costs	✘ Plans can change their benefits year to year
✔ Many $0 premium plans available in Lexington & Columbia area	✘ May not work well if you have complex medical needs

 

Who Is Each Plan Best For?

Medicare Supplement (Medigap) tends to be the best fit if you:

• Have ongoing health conditions or see specialists regularly
• Want the freedom to see any Medicare-accepting doctor — no referrals needed
• Travel frequently within the U.S. or spend winters elsewhere (snowbirds)
• Want peace of mind and predictable expenses, even if premiums are higher
• Are comfortable managing a separate Part D drug plan

 

Medicare Advantage tends to be the best fit if you:

• Are relatively healthy and want to keep monthly costs low (including $0 premium options)
• Want one plan that bundles medical, drug, dental, vision, and hearing
• Are comfortable staying within a provider network in the Lexington or Columbia area
• Want extra benefits like gym memberships, transportation, or over-the-counter allowances
• Don't travel extensively outside your plan's service area

 

Average 2026 Cost Ranges in South Carolina

 

Plan Type	Typical Monthly Cost (SC)	Notes
Medigap Plan G	$120–$280/mo	Most popular supplement — covers almost everything
Medigap Plan N	$80–$180/mo	Lower premium — small copays for some visits
Medigap Plan F (grandfathered)	$150–$310/mo	Available to those eligible before 2020
Medicare Advantage (HMO)	$0–$30/mo	Common in Lexington/Columbia — check networks
Medicare Advantage (PPO)	$20–$60/mo	More flexibility — slightly higher premium
Part D Drug Plan (Supplement users)	$20–$70/mo	Required if you choose a supplement plan

 

Note: Actual premiums vary by your age, tobacco use, county, and the specific insurer. Jennifer can run a personalized comparison at no charge.

 

A Word About South Carolina Specifically

South Carolina offers a solid mix of both plan types, especially in the Midlands region (Lexington, Columbia, Irmo, Chapin). Medicare Advantage networks in this area have grown significantly, with strong HMO and PPO options through major carriers.

However, SC does not have continuous open enrollment for Medicare Supplements — meaning that if you want to switch to a Medigap plan after your initial enrollment window, you may be subject to medical underwriting. This is an important consideration that Jennifer can walk you through in detail.

Additionally, South Carolinians who qualify for both Medicare and Medicaid (dual eligible) may have additional options not covered in this guide. Contact us to learn more.

 

The Bottom Line

There's no wrong choice here — only the wrong choice for your situation. Medicare Supplement gives you freedom and predictability. Medicare Advantage gives you lower premiums and extra benefits. Both have a role to play.

The most important thing you can do is compare your specific options with someone who knows the South Carolina market, knows the carriers, and will take the time to explain the tradeoffs in plain language.

That's exactly what Jennifer Mauldin does — at no cost to you. Her services are paid by the insurance companies, not by you. There is never a fee for a consultation.

 

 

📅 Schedule Your Free Medicare Plan Comparison Jennifer Mauldin | Medicare Specialist | Mauldin Insurance Group 📞 843-509-2462  |  🌐 MauldinInsuranceGroup.com 📍 Proudly serving Lexington, Columbia, Irmo, Chapin & all of South Carolina