This is one of the most important Medicare decisions you'll make. Both options cover the same core services — but they work very differently when it comes to costs, doctors, and flexibility.
Side-by-Side Comparison
| Feature | Original Medicare | Medicare Advantage |
|---|---|---|
| Monthly Premium | Part B only (~$185/mo) | Often $0–$50 (varies by plan) |
| Doctor Network | Any doctor that accepts Medicare (nationwide) | Network restricted (HMO/PPO) |
| Out-of-Pocket Cap | No cap (Medigap can add one) | Yes — legally required cap |
| Drug Coverage | Requires separate Part D plan | Usually included (Part C + D) |
| Extra Benefits | None beyond A/B/D | Often includes dental, vision, hearing |
| Referrals Required | No | Sometimes (HMO plans) |
| Travel Coverage | Good nationwide coverage | May be limited outside network area |
| Medigap Option | Yes | No (cannot have both) |
Key Questions to Ask Before Choosing
- Are my current doctors in the Advantage plan's network?
- Are my prescriptions covered on the plan's formulary?
- Do I travel frequently and need nationwide coverage?
- Would I benefit from the extra benefits (dental, vision)?
- Am I comfortable with prior authorization requirements?
You can switch plans once a year during the Annual Enrollment Period (October 15 – December 7). If you switch from Original Medicare to Advantage, you can switch back — but re-enrolling in Medigap may require medical underwriting after your initial Medicare enrollment window.
Who Usually Prefers Each Option
Original Medicare + Medigap: Best if you want maximum flexibility, travel frequently, have specific doctors you want to keep, or prefer predictable costs over potential lower premiums.
Medicare Advantage: Often a better fit if you want a lower monthly premium, don't mind a network, and value the extra benefits like dental and vision coverage.
Check Your Medicare Savings Options
Before choosing a plan, see if you qualify for programs that reduce your costs regardless of which Medicare path you choose.