Medicare Supplement vs. Medicare Advantage
The most important decision in Medicare: comprehensive Medigap coverage with freedom, or all-in-one Advantage plans with lower premiums. Here's how to choose.
Medicare Supplement
(Medigap)
Fills the "gaps" in Original Medicare — deductibles, copays, and coinsurance. You keep Original Medicare as your primary insurance and Medigap pays most or all of what Medicare doesn't.
Pros:
Cons:
Medicare Advantage
(Part C)
An alternative to Original Medicare offered by private insurers. Bundles Part A, Part B, and usually Part D into one plan. Often includes extra benefits like dental, vision, and hearing.
Pros:
Cons:
Important: This Decision May Be Permanent
If you choose Medicare Advantage and later want to switch to Original Medicare + Medigap, you may not be able to get a Medigap policy without medical underwriting (in most states). This means you could be denied coverage or charged higher premiums based on your health. Make this decision carefully during your initial enrollment.
Side-by-Side Comparison
| Feature | Medicare Supplement | Medicare Advantage |
|---|---|---|
| Monthly Premium | Higher ($75 – $300+/mo) | Lower ($0 – $150+/mo) |
| Out-of-Pocket When You Use Care | Very low (near $0 with Plan G) | Higher (copays + coinsurance) |
| Annual Out-of-Pocket Max | Effectively near $0 | $9,250 in-network (2026) |
| Doctor Freedom | Any Medicare-accepting doctor nationwide | Network-based (HMO/PPO) |
| Referrals Required? | Never | HMO: Yes / PPO: No |
| Prescription Drug Coverage | No — need separate Part D | Usually included (MA-PD) |
| Dental, Vision, Hearing | Not included | Often included |
| Fitness Benefits | Not included | Often included (SilverSneakers) |
| Works When Traveling? | Yes — nationwide | Limited outside service area |
| Prior Authorization | Rarely (follows Medicare rules) | Frequently required |
| Plan Changes Annually? | No — benefits are standardized | Yes — networks, costs, formularies change |
| Guaranteed Issue Rights | 6-month window at 65 (federal) | Annual enrollment periods |
| Medical Underwriting | After open enrollment, usually yes | No — guaranteed issue during enrollment |
| Best For | People who want predictability & freedom | People who want low premiums & extras |
Frequently Asked Questions
Still Not Sure? Let Us Help You Decide.
Our licensed agents specialize in helping people choose between Medigap and Medicare Advantage. We'll analyze your doctors, medications, and budget to give you a personalized recommendation — at no cost.