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Medicare Supplements · Plan Comparison

High-Deductible Plan G vs. Plan G vs. Plan N: which Medigap fits?

✓ Evergreen guide · reviewed October 2026

All three are strong Medigap plans that work the same way ... they differ only in how you trade a lower premium for more out-of-pocket risk. Here's the honest breakdown, plus the one trap worth knowing.

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First, what all three have in common

Before the differences, it helps to know these plans are identical in how they work:

🩹

Any Medicare doctor

No networks. You can see any provider in the country that accepts Medicare ... same for all three.

👤

No referrals

Go straight to specialists. None of these plans use a primary-care gatekeeper.

💊

Pair with Part D

Each one rides alongside Original Medicare and a stand-alone Part D drug plan ... the setup is the same.

So the choice isn't about doctors or access ... it's purely about how you want to split cost between premium and out-of-pocket.

The three plans, plainly

PlanPremiumYour out-of-pocketBest when
Plan GHighestLowest ... pays almost everything after the small Part B deductibleYou want maximum predictability and peace of mind
Plan NMiddleSmall office and ER copays; you may pay Part B excess chargesYou want a lower premium and don't mind modest copays
High-Deductible GLowestYou pay up to a set annual deductible first, then it acts like Plan GYou're healthy, rarely use care, and want to bank the premium savings

The trade-off in one sentence

You're deciding how much premium to pay now to cap how much you could pay later. High-Deductible G has the lowest premium but the most exposure in a bad year; Plan G is the opposite; Plan N sits in the middle.

High-Deductible G shines when you're younger and healthy ... you pocket real premium savings and rarely touch the deductible.

The trap: it can be a one-way door that gets worse with age

Many people start on High-Deductible G to save, planning to “move up” to full Plan G later. Two things make that risky:

⚠️ Switching Medigap plans later usually requires medical underwriting ... if your health has changed, you can be rated up or declined. The low-premium plan you chose while healthy can become hard to leave.
📉 And your exposure grows over time: health care costs roughly double every decade of life, so the year you're most likely to hit that deductible is also the year it's hardest to switch away from it.
Why this gets harder with age: health care costs roughly double every decade
1×
In your 50s
2×
In your 60s
4×
In your 70s
8×
In your 80s
Illustrative. Typical out-of-pocket medical spending climbs steeply with age, so the lower-premium choice that fits comfortably at 65 can feel very different at 80 ... which is exactly why the trade-off deserves a careful look now.
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Compare all three for your ZIP

We'll quote High-Deductible G, Plan G, and Plan N side by side for your age and area, and talk through which trade-off fits you. Tell us your current plan if you have one.

Medications & dosages
Optional, but it makes your quote accurate ... this is how we check real drug coverage and cost.
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Common questions

▸ Is High-Deductible Plan G worth it?
It can be an excellent value if you're healthy and rarely use care ... you keep the premium savings and only pay more in a heavy-use year. The main caution is that moving to a richer plan later may require medical underwriting, and your costs tend to rise with age.
▸ What's the catch with Plan N?
Plan N has a lower premium than Plan G but adds small copays and may leave you responsible for Part B excess charges from providers who don't accept Medicare assignment. For many people those are minor; we'll show you the real numbers.
▸ Can I switch Medigap plans later?
You can apply anytime, but outside a guaranteed-issue window you'll typically go through medical underwriting and can be declined. That's why the first choice matters more than people expect.
▸ Does it cost anything to compare with you?
No. We're licensed California agents and our help is free. Medigap prices are set by the carrier ... using an agent doesn't change your rate.

Related help & next steps

Advantage vs. MedigapWhen each one wins Switching to MedigapTiming and underwriting Get a Medigap quoteAll three plans side by side How Medicare worksThe complete guide
Dennis Jarvis, licensed California health insurance agent

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