Medigap vs Medicare Advantage
This is the fork in the road every Medicare beneficiary reaches: keep Original Medicare and add a supplement, or replace it with an all-in-one Medicare Advantage plan. Both are legitimate, and there’s no universal “better” — only the one that fits you. We offer both, so here’s an honest, side-by-side look to help you decide.
The fundamental difference
Everyone starts with Original Medicare (Parts A & B). The choice is simply how you complete it. One path adds to Original Medicare; the other replaces it. You pick one — not both.
You keep Original Medicare and add a private Medigap policy that pays its gaps, plus a separate Part D drug plan. No networks — any doctor nationwide who accepts Medicare works.
You get one private plan that replaces Original Medicare and bundles it together — usually with drug coverage and extras like dental and vision, typically through a network.
Side by side
The two paths across the dimensions that matter most. Costs are shown relative to each other, since exact amounts vary by plan, carrier, and area.
| How they compare | MedigapOriginal + Supplement | Medicare AdvantagePart C |
|---|---|---|
| How it works | Adds to Original Medicare and pays its gaps | Replaces Original Medicare with one private plan |
| Doctors & hospitals | Any that accept Medicare, nationwide | Usually a network (HMO or PPO) |
| Referrals | Not needed | May be required for specialists |
| Prior authorization | Rarely required | More common for certain services |
| Prescription drugs | A separate Part D plan you choose | Usually built into the plan |
| Dental, vision, hearing | Added through separate coverage | Often included |
| Monthly premium | Higher (plus your Part B premium) | Often low, sometimes none (plus your Part B premium) |
| Costs when you get care | Very little — the plan pays the gaps | Copays as you use services |
| Yearly out-of-pocket cap | Effectively handled by the supplement | Built-in maximum |
| Travel within the U.S. | Works anywhere Medicare is accepted | Best within the plan’s service area |
| Cost predictability | Very high — few surprises | Varies with how much care you use |
| Best for | Freedom & predictable costs | Low premium & bundled extras |
How each one actually works
A closer look at the day-to-day of each path — what happens when you go to the doctor, fill a prescription, or travel.
Medigap (Original Medicare + Supplement)
At the doctor
Show your red-white-and-blue Medicare card and your supplement card. Any provider nationwide that accepts Medicare is in — no network to check.
When bills come
Medicare pays its share, then your supplement pays most or all of what’s left. You usually owe little to nothing.
Drugs & extras
You add a separate Part D plan for prescriptions, and can add dental or vision coverage if you want it.
Medicare Advantage (Part C)
At the doctor
You use the plan’s network and show your Advantage card. Staying in-network keeps your costs lowest; some plans need referrals.
When you get care
You pay a copay or coinsurance as you go, up to the plan’s yearly out-of-pocket maximum — then the plan covers 100%.
Drugs & extras
Prescriptions are usually built in, and many plans bundle dental, vision, hearing, and fitness perks.
Strengths and watch-outs of each
No sugar-coating — here’s what each path does well, and where it asks you to compromise.
- Any doctor nationwide that accepts Medicare — no networks
- Very predictable costs — you rarely see a bill
- No referrals, and prior authorization is rare
- Great for travel and splitting time between states
- Higher monthly premium
- Drugs and extras are added separately
- Switching later may require health underwriting
- Low or even no plan premium in many areas
- Drugs and extras bundled in — dental, vision, hearing, fitness
- A built-in yearly out-of-pocket maximum
- One card, one plan — simple and all-in-one
- Networks and possible referrals
- More prior authorization; you pay copays as you go
- Coverage is tied to the plan’s area, and best there
Who tends to pick what
A few common situations and the path they usually point toward. Yours may differ — the only way to be sure is to look at your specifics.
“I want to keep any doctor I choose.”
Medigap — no networks, nationwide access“I want the lowest monthly premium.”
Medicare Advantage — often a low or no plan premium“I travel or split time between states.”
Medigap — works anywhere Medicare is accepted“I want dental, vision & hearing bundled.”
Medicare Advantage — extras are often included“I want the most predictable costs possible.”
Medigap — the plan pays the gaps, few surprises“I’m healthy and want an all-in-one plan.”
Medicare Advantage — simple, bundled, budget-friendlyBoth paths are legitimate — more than half of Medicare beneficiaries now choose Advantage, while many others value Medigap’s freedom and predictability. Because we offer both, we have no reason to push one over the other. The right choice depends on your doctors, prescriptions, health, budget, and how you like to use care — and we’ll walk through all of it with you, free.
Explore next
One decision, made easy — with someone on your side.
Tell us about your doctors, prescriptions, budget, and how you like to get care, and we’ll compare both paths honestly and recommend the one that genuinely fits you. We offer Medigap and Medicare Advantage, so our only goal is your best fit. Free, unbiased, no pressure.
May River Medicare Insurance is an independent agency and is not affiliated with or endorsed by the U.S. government, the federal Medicare program, or CMS. Medigap and Medicare Advantage are different types of coverage and cannot be used together. Plan availability, benefits, premiums, networks, and out-of-pocket costs vary by ZIP code and carrier, and you must continue to pay your Medicare Part B premium. Comparisons here are general and for education only. For a complete list of your options, contact Medicare.gov or 1-800-MEDICARE.