Medicare Supplement Plan G premiums for a 66-year-old non-smoking woman in Durham County range from approximately $115 to $190 per month in 2026, depending on the carrier. Your total monthly cost is the Plan G premium plus the $202.90 Part B premium plus a standalone Part D drug plan (typically $15–$40/mo). That puts all-in monthly costs between roughly $333 and $433. The cheapest carrier today isn’t always the cheapest at 76 — rate stability matters as much as starting price. For your specific zip code and health profile, call Rob Simm at (828) 761-3326 — free, no obligation.

What Durham families ask

What drives the real cost of Plan G in Durham County?

Four factors determine what you actually pay — and most websites only mention one of them.

Why does the same Plan G cost $115 from one carrier and $190 from another?

Carriers set their own rates based on claims experience in your zip code, underwriting model (attained-age vs. issue-age vs. community-rated), and the size of their NC risk pool. Benefits are identical — only the price and rate stability differ.

What’s the total monthly cost beyond the Plan G premium?

You also pay the $202.90/mo Part B premium (2026), a standalone Part D drug plan ($15–$40/mo), and the $283 annual Part B deductible. Plan G covers everything else after that deductible — 100%, no copays, no network.

Will my premium increase every year?

Yes. Attained-age plans increase as you age plus inflation. Typical annual increases run 3–8%. A carrier that starts $20/mo cheaper but increases 8%/yr will cost more than a stable carrier within 5 years. I model 10-year projections.

Can I switch Plan G carriers later if rates get too high?

You can apply anytime, but after your 6-month Medigap open enrollment window, carriers in NC can medically underwrite you. A new health condition could mean denial or a higher rate. Picking the right carrier at 66 matters more than people realize.

⚠️ Your 6-month Medigap window is a one-time deal

Starting when you turn 65 and enroll in Part B, you have exactly 6 months to buy any Medigap plan with guaranteed issue — no health questions, no denial. Miss this window and NC carriers can reject you or charge dramatically more if you develop a health condition. This is the single most expensive mistake I see in Durham County. If you’re within 6 months of turning 65, call (828) 761-3326 before that window closes.

The difference

What do you get from a broker that Medicare.gov can’t give you?

What do you need to know?	Medicare.gov	Rob Simm — NC #10447418
Plan G rate comparison	Does not list Medigap rates — sends you to each carrier	Every NC carrier side-by-side, sorted by 10-year cost projection
Rate stability history	No historical data available	I track year-over-year rate increases per carrier per Durham zip
Underwriting model	Not explained	I tell you if a carrier is attained-age, issue-age, or community-rated — and what that means at 76
Part D pairing	Separate tool, no Medigap coordination	I match your Part D formulary to your Plan G so total cost is optimized
Duke Health network	Generic directory	Direct verification — Medigap works with any provider taking Original Medicare, including Duke
Cost to you	$0 (just your time)	$0 — carrier pays my commission, same rate you’d pay directly

2026 Medicare numbers

What are the key 2026 figures every Plan G buyer needs to know?

$202.90

Part B premium per month

2026 standard rate. Higher with IRMAA surcharge based on income above $106,000.

$283

Part B annual deductible

The only out-of-pocket cost Plan G doesn’t cover. You pay this once per year before Plan G picks up 100%.

$9,350

MA in-network out-of-pocket max

2026 Medicare Advantage cap. Plan G has no equivalent because your exposure is limited to $283/yr.

$2,100

Part D out-of-pocket cap

New 2026 Rx cap. Insulin capped at $35/month. You still need a separate Part D plan with Medigap.

💡 Broker Tip — Durham County

In Durham County, the lowest Plan G premium at age 66 is often not the best long-term value. I’ve tracked carriers whose rates were $30/mo cheaper at enrollment but $50/mo more expensive by age 72. Ask me for the 10-year rate history on any carrier — it takes 2 minutes and could save you thousands. Call (828) 761-3326.

— Rob Simm, Licensed Medicare Broker, NC #10447418

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Rob Simm · Licensed NC Medicare Broker · NPN #10447418

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Real scenario · Durham County

What happens when you pick the cheapest carrier vs. the most stable one?

Cheapest at 66

$4,680

Picked the $115/mo carrier at 66. Rate increased 8% per year. By age 76, paying $248/mo. Total Plan G premiums over 10 years: ~$21,600. Plus lost the option to switch after a health change at 71.

Most stable at 66

$3,240

Picked the $145/mo carrier with 3–4% annual increases. By age 76, paying $197/mo. Total Plan G premiums over 10 years: ~$19,800. Saved $1,800+ and kept predictable bills the entire decade.

It pays to talk to the right broker

Does it cost more to buy Plan G through a broker?

It doesn’t — because I get paid by the insurance carrier to manage your plan. Most call centers get paid more to steer your business toward certain carriers based on volume and contracts. The only thing I’m optimizing for is making sure you’re covered correctly when you actually need it. That’s what keeps people coming back. And referring their neighbors.

Common questions

Frequently asked questions

Why do Plan G premiums vary so much between carriers in Durham County?

Each carrier uses its own underwriting model — attained-age, issue-age, or community-rated — and sets rates based on its claims experience in the Durham County zip codes. Two carriers offering identical Plan G benefits can differ by $60/month or more for the same 66-year-old woman. That’s why comparing across all carriers matters.

Does Plan G cover everything after the Part B deductible?

Yes. Once you pay the $283 annual Part B deductible in 2026, Plan G covers 100% of all remaining Medicare-approved costs — no copays, no coinsurance, no network restrictions, no surprise bills. That’s what makes it the most popular Medigap plan in North Carolina.

Will my Plan G premium go up every year?

Yes — Medigap premiums increase annually based on your age (attained-age plans), medical inflation, and the carrier’s claims experience. Typical annual increases run 3–8%. Starting with the lowest-cost carrier at 66 doesn’t always mean the lowest cost at 76. I model 10-year projections for every client.

Is there a fee to have a broker compare Plan G rates for me?

No. Brokers are paid by the insurance carrier when you enroll, and the commission is identical regardless of which carrier you choose. Your premium is the same whether you enroll directly, through Medicare.gov, or through a broker like me. Call (828) 761-3326 — free, no obligation.

What if I miss the 6-month Medigap open enrollment window?

In North Carolina, if you miss your 6-month Medigap open enrollment window (starts when you turn 65 and enroll in Part B), carriers can deny you coverage or charge significantly more based on medical underwriting. This is the single most expensive mistake I prevent. Call me at (828) 761-3326 before that window closes.

Related Medicare guides

Medicare Enrollment in NC – 2026 Guide Extra Help/LIS Eligibility NC 2026 Compare Medicare Advantage Plans in NC Extra Help / LIS in NC – 2026 Eligibility Guide Working Past 65 – Medicare Enrollment Special Enrollment Periods in NC Cheap Health Insurance Without Employer Coverage Free Medicare Quotes Online

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Robert Simm

Licensed Independent Medicare Broker

Helping NC families navigate Medicare since 2014. Independent — I work with all carriers and get paid the same regardless of which plan you choose. I verify provider networks with Duke Health directly and answer my own phone the next year when something changes.

📞 (828) 761-3326 📋 NC #10447418 🏥 AHIP Certified ⭐ 5.0 · 20+ reviews 📍 2731 Meridian Pkwy, Durham NC 27713 🕐 Mon–Fri 9am–7pm ET

Last Updated: 2026-05-04 | Reviewed By: Robert Simm, Licensed Medicare Broker, NC #10447418 | Next Review: October 2026

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