Medicare Advantage vs. Medigap: How to Choose Before December 7
Two very different ways to cover what Original Medicare doesn’t. The choice is less about which is better and more about which one fits how you use healthcare.
Quick answer: Medicare Advantage replaces Original Medicare with a private plan, usually with a network, often bundling drug coverage and extras, and you pay as you use care. Medigap sits alongside Original Medicare and covers much of what it leaves behind, with a higher monthly premium and far fewer surprises. Open enrollment closes December 7.
Both paths are legitimate. People who tell you one is always right are selling something. What actually determines the better fit is how often you see doctors, whether you travel, how attached you are to specific providers, and whether you’d rather pay a steady premium or pay as you go.
The comparison in plain language
| Medicare Advantage (Part C) | Medigap (Supplement) | |
|---|---|---|
| How it works | Replaces Original Medicare with a private plan | Works alongside Original Medicare |
| Monthly premium | Often low, sometimes $0 beyond Part B | Higher, paid every month |
| Costs when you use care | Copays and coinsurance as you go | Most costs covered, few surprises |
| Provider choice | Usually a network, referrals may apply | Any provider that accepts Medicare |
| Drug coverage | Often bundled in | Separate Part D plan required |
| Extras | May include dental, vision, hearing, fitness | Not included |
The timing detail that matters most
When you first become eligible, you have a window to buy a Medigap policy without medical underwriting. During that window, an insurer cannot decline you or charge you more because of your health history. Outside it, and outside a limited set of guaranteed issue situations, a supplement insurer generally can underwrite, which means they can say no.
Read that twice: choosing Medicare Advantage at 65 is not always a reversible decision. Switching to a supplement years later may require passing underwriting, and health conditions acquired in the meantime can make that difficult. This is the single most consequential part of the choice, and it is routinely glossed over.
Questions that actually point to an answer
- Do you have doctors or a specialist you are not willing to change? Check the network before anything else.
- Do you travel or spend part of the year outside Washington? Network plans travel poorly.
- Would an unpredictable year of copays strain your budget, or is a steady premium the harder hit?
- Do you take prescriptions that need checking against a specific formulary?
- Do you have a health history that could make underwriting difficult later?
What to do before December 7
Even if you’re happy with your current plan, review it. Plans change their networks, formularies, and copay structures annually, and the plan that fit this year may not be the same plan in January. If you do nothing, you’re usually renewed into next year’s version of your plan, whatever that version turns out to be.
Frequently asked questions
When is Medicare open enrollment?
What is the difference between Medicare Advantage and Medigap?
Can I switch from Medicare Advantage to Medigap later?
Review your options before the window closes
A local, no-cost conversation about how you actually use healthcare, and which path fits. No pressure, no obligation.
This article is for general educational purposes and is not a statement of your specific benefits, eligibility, or costs. Plan designs, networks, and enrollment rules vary and change annually. Confirm your situation at Medicare.gov or with a licensed agent. Reynolds Insurance Agency LLC is an insurance agency serving Bellingham and Whatcom County, WA. 360-676-0224