Medicare Advantage vs Medicare Supplement — Which Is Better?

How Original Medicare Works

Original Medicare (Parts A and B) covers hospital stays and doctor visits but leaves you responsible for deductibles, copays, and coinsurance. There is no out-of-pocket maximum with Original Medicare alone, which means a serious illness could cost you thousands of dollars. Most people add either a Medicare Supplement plan or a Medicare Advantage plan to fill these gaps.

What Is Medicare Advantage (Part C)?

Medicare Advantage plans are offered by private insurance companies approved by Medicare. They bundle Parts A, B, and usually Part D (prescription drugs) into one plan. Most Medicare Advantage plans have low or $0 monthly premiums but charge copays and coinsurance when you use services. They typically use provider networks (HMO or PPO), which means you may need referrals or be limited to in-network providers.

• Often $0 monthly premium
• Usually includes prescription drug coverage
• Uses provider networks (HMO/PPO)
• Has an annual out-of-pocket maximum
• May include dental, vision, and hearing benefits

What Is a Medicare Supplement (Medigap) Plan?

Medicare Supplement plans — also called Medigap — are sold by private insurers and work alongside Original Medicare to cover the gaps it leaves behind. You pay a monthly premium for the supplement plan, and in return, most or all of your deductibles, copays, and coinsurance are covered. You can see any doctor or specialist who accepts Medicare — no network restrictions.

• Works with any doctor who accepts Medicare
• No network restrictions — nationwide coverage
• Predictable costs with little or no out-of-pocket at time of service
• Monthly premium required (varies by plan and age)
• Does not include prescription drug coverage (need separate Part D)

Key Differences at a Glance

Medicare Advantage typically has lower monthly premiums but higher costs when you use healthcare services. Medicare Supplement has higher monthly premiums but very low or zero costs at the point of service. If you travel frequently, have complex health needs, or want the freedom to see any doctor in the country, a Medicare Supplement plan often provides more flexibility.

Which Plan Is Right for You?

The right choice depends on your health status, how often you use healthcare, your preferred doctors, and your budget. People who are generally healthy and want low monthly costs often prefer Medicare Advantage. People with chronic conditions, frequent specialist visits, or who travel often tend to prefer Medicare Supplement plans for their predictability and flexibility. AG Insurance can help you compare both options side by side.