Medicare Supplement (Medigap) and Medicare Advantage (Part C) plans both help fill Original Medicare gaps, but differ in flexibility, costs, and benefits. Medigap offers nationwide provider choice with predictable, low costs; Medicare Advantage often includes extras like dental/vision at lower premiums, but with network restrictions. Our NC agents help compare options.
Medicare Supplement (Medigap) and Medicare Advantage (Part C) plans both help fill gaps in Original Medicare (Parts A & B), but they work differently. You cannot enroll in both at the same time, so choosing the best option depends on your health, budget, travel needs, and preferred doctors. Our North Carolina Medicare agents can help you compare and decide.
Original Medicare covers about 80% of costs, leaving you responsible for deductibles, coinsurance, and copays. Adding coverage—either Medigap or Medicare Advantage—is recommended to protect against high out-of-pocket expenses. You’ll also need Part D prescription drug coverage unless it’s included in your plan. Delaying enrollment in Medigap or Part D can result in lifelong late penalties.
Medigap plans work alongside Original Medicare to cover gaps like:
Hospital deductibles and coinsurance
Part B coinsurance (the 20% Medicare doesn’t pay)
Part B excess charges (in some plans)
Foreign travel emergencies (in select plans)
Plans are standardized (labeled A, B, D, G, K, L, M, and high-deductible options) and offer the same benefits regardless of insurer. You pay a monthly premium plus your Part B premium. You need a separate Part D plan for prescriptions.
Medicare Advantage plans are private, Medicare-approved alternatives to Original Medicare. They bundle Parts A, B, and usually D, often with extras like:
Dental, vision, and hearing coverage
Fitness programs (e.g., SilverSneakers)
Prescription drugs
Over-the-counter allowances
Transportation to appointments
Most plans use networks (HMO or PPO), with lower costs for in-network care and an annual out-of-pocket maximum (up to $9,200 in 2025 for in-network services).
Feature | Medicare Supplement (Medigap) | Medicare Advantage (Part C) |
Doctors & Hospitals | Any Medicare-accepting provider (no networks) | Usually limited to the network (except emergencies) |
Referrals | No referral needed for specialists | May require PCP referral in some plans |
Prescription Coverage | Separate Part D plan required | Usually included |
Premium | Monthly premium + Part B premium; low/no copays | Often $0 premium + Part B; copays apply |
Out-of-Pocket Costs | Predictable and low/no costs after the premium | Capped annually (MOOP); higher if out-of-network |
Travel | Nationwide coverage; some foreign travel emergency | Limited outside network; emergency care covered |
Enrollment | Best during Medigap Open Enrollment (guaranteed issue) | During Initial, Annual, or Special Enrollment Periods |
Medigap
— Best for flexibility, predictable costs, frequent care, and nationwide travel.
Medicare Advantage
— Best for lower premiums, extra benefits, and managed care.
In recent years, Medicare Advantage enrollment has grown, aligning with national trends (around 50%+ of beneficiaries). Many North Carolinians choose Medigap for its flexibility, with about 40% of Original Medicare users enrolled in a supplement plan.
Our experienced Medicare agents in North Carolina (including Charlotte, Raleigh, and beyond) specialize in comparing local Medigap and Medicare Advantage plans. We’ll review your health, budget, and preferences to find the best fit.