Medicare Advantage vs. Medicare Supplement: Which Is Right for You?

This is the most important decision most Medicare beneficiaries make — and it's one you need to get right. Medicare Advantage and Medicare Supplement (Medigap) are fundamentally different approaches to covering the gaps in Original Medicare. Neither is universally better; the right choice depends on your health, finances, and lifestyle.

The Core Difference

Medicare Advantage replaces Original Medicare with a private plan. Medicare Supplement works alongside Original Medicare to fill in the cost gaps. With Original Medicare alone, you're exposed to potentially unlimited out-of-pocket costs — both plan types solve that problem, but in very different ways.

Medicare Advantage: The Pros

• Low or $0 monthly premiums (you still pay Part B premium)
• Usually includes prescription drug coverage (Part D)
• Often includes dental, vision, hearing, and fitness benefits
• Annual out-of-pocket maximum caps your exposure
• Many plans offer over-the-counter allowances and transportation benefits

Medicare Advantage: The Cons

• Network restrictions — you must use in-network providers (HMO) or pay more out-of-network (PPO)
• Prior authorization required for many procedures and specialist visits
• Plans change annually — your doctors, drugs, and costs can change each year
• Out-of-pocket maximums can be $5,000–$8,000+ in some plans
• May not be ideal for people with complex or chronic conditions who see many specialists

Medicare Supplement (Medigap): The Pros

• Use any doctor or hospital that accepts Medicare — nationwide, no networks
• Predictable costs — Plan G, for example, covers nearly everything after the Part B deductible
• No referrals needed for specialists
• Coverage is standardized — Plan G from one company is identical to Plan G from another
• Ideal for frequent travelers and snowbirds
• Excellent for people with serious health conditions who need predictable costs

Medicare Supplement (Medigap): The Cons

• Higher monthly premiums (typically $100–$250+/month depending on age and plan)
• Does NOT include prescription drug coverage — you need a separate Part D plan
• Does NOT include dental, vision, or hearing
• Medical underwriting may apply if you switch plans after your initial enrollment window

The Financial Reality

Many people choose Medicare Advantage for the low premiums — and that's a perfectly valid choice if you're healthy and rarely use your coverage. But if you develop a serious illness, the out-of-pocket costs under Medicare Advantage can add up quickly. A Medigap Plan G, while more expensive monthly, can actually cost less overall for someone with significant healthcare needs.

The Bottom Line

There is no single right answer. The best plan depends on your specific doctors, medications, health history, and financial situation. As an independent broker, Deborah can compare both options side-by-side using your actual information — at no cost to you.