Original Medicare vs Medicare Advantage: How to Choose the Right Option

One of the most important decisions you'll make with Medicare is choosing between Original Medicare and Medicare Advantage. Both have real advantages and tradeoffs. Here's how to decide.

Original Medicare (Parts A + B)

With Original Medicare, the federal government is your insurer. You can see any doctor or hospital in the country that accepts Medicare — and over 90% do.

Medicare Advantage (Part C)

With Medicare Advantage, a private insurance company administers your Medicare benefits. Plans must cover everything Original Medicare covers, and most add extras.

How to decide — key questions

1. Do you travel frequently or live in multiple states? Original Medicare works everywhere. Medicare Advantage networks are local.

2. Do you have complex health needs with many specialists? Original Medicare gives unrestricted access. Advantage plans may require referrals and approvals.

3. What's your budget? If you can afford Medigap ($100-$250/month), Original Medicare gives more predictable costs. If budget is tight, a $0 premium Advantage plan may be better.

4. Do you want dental, vision, and hearing? Medicare Advantage often includes these. With Original Medicare, you'd need separate coverage.

5. Are your doctors in the plan's network? Before choosing Advantage, verify your doctors participate.

California-specific advantage: If you choose Original Medicare now and later want to switch, California's Medigap Birthday Rule gives you annual open enrollment to change Medigap plans — a protection most states don't offer.

The biggest risk to understand: If you switch FROM Original Medicare + Medigap TO Medicare Advantage, and later want to switch back, you may not be able to get Medigap coverage again without medical underwriting (except during California's birthday rule window or other guaranteed-issue situations). This is a one-way door for many people.