Medicare Advantage vs. Medicare Supplement: What’s the Difference?

If you’re approaching age 65 or helping a loved one navigate Medicare, you’ve probably come across two common options: Medicare Advantage and Medicare Supplement (also called Medigap). While both can help cover costs beyond Original Medicare, they work very differently. Let’s break down the differences so you can decide which one best fits your needs.

What Is Original Medicare?

Before diving into the comparison, it helps to understand what Original Medicare includes:

  1. Part A – Hospital insurance (inpatient care, hospice, some home health)
  2. Part B – Medical insurance (doctor visits, outpatient services, preventive care)

While Original Medicare covers a lot, it doesn’t cover everything—and there are out-of-pocket costs like deductibles, coinsurance, and no cap on spending.

That’s where Medicare Advantage and Medicare Supplement plans come in.

What Is Medicare Advantage (Part C)?

Medicare Advantage is an all-in-one alternative to Original Medicare offered by private insurance companies. These plans must cover everything Parts A and B do—and many offer extra benefits too.

✅ What it includes:

  1. Hospital + medical coverage
  2. Often includes drug coverage (Part D)
  3. May offer dental, vision, hearing, fitness, or transportation benefits

💳 How it works:

  1. You typically pay a low (or $0) monthly premium in addition to your Part B premium
  2. You use a provider network (like an HMO or PPO)
  3. Most plans have annual out-of-pocket maximums

👍 Best for:

People who want extra benefits and are comfortable using network providers.

What Is Medicare Supplement (Medigap)?

Medicare Supplement plans are sold by private companies to “fill the gaps” in Original Medicare coverage. These plans help pay for things like deductibles, coinsurance, and copayments.

✅ What it includes:

  1. Helps cover out-of-pocket costs from Original Medicare
  2. No provider networks—you can see any doctor who accepts Medicare
  3. Doesn’t include drug coverage (you’ll need a separate Part D plan)

💳 How it works:

  1. You pay a monthly premium (can be higher than Advantage plans)
  2. Fewer out-of-pocket costs when you use services
  3. Standardized plans (A, B, G, N, etc.) with predictable coverage

👍 Best for:

People who want freedom to choose any doctor, travel often, or have ongoing medical needs.


Which One Is Right for You?

Ask yourself:

  1. Do I want a low monthly premium and all-in-one plan? → Medicare Advantage
  2. Do I prefer fewer surprise costs and flexibility with doctors? → Medigap + Part D

Also consider:

  1. Do I travel often?
  2. Do I have specific doctors I want to keep?
  3. Am I okay navigating provider networks?
  4. What’s my monthly budget?

Need Help Choosing?

Deciding between Medicare Advantage and Medigap isn’t always easy—but you don’t have to go it alone. Our licensed advisors are here to help you compare plans, understand your options, and enroll with confidence.