If your NC employer has 20 or more employees, you can stay on employer coverage as long as you want — Medicare is secondary, and you won't owe a penalty when you eventually switch. If your employer has fewer than 20 employees, Medicare became primary at 65 and you should have enrolled then; every 12 months you delayed adds a permanent 10% surcharge to your $202.90/month Part B premium. When you do leave employer coverage, you get an 8-month Special Enrollment Period to sign up for Part B and Part D penalty-free — but only if the employer had 20+ employees. For your specific situation, call Rob Simm at (828) 761-3326 — free, no obligation.

What NC families ask

What happens if I get the timing wrong?

These are the four questions I hear most from NC residents working past 65.

Does employer size really matter that much?

Yes. The 20-employee threshold determines whether your employer plan or Medicare pays first. Get it wrong and you could face a permanent Part B penalty of 10% for every 12 months you delayed — for life.

Can I just keep both plans running?

You can, but coordination of benefits matters. If your employer has 20+ employees, employer pays first. Under 20, Medicare pays first. Miscoordinated claims get denied — and you get the bill.

What if I miss my window after retirement?

You get an 8-month Special Enrollment Period after employer coverage ends. Miss it and you wait until General Enrollment (Jan–Mar), coverage doesn't start until July, and you owe the Part B penalty permanently.

Will my spouse lose coverage when I switch?

Possibly. If your spouse is under 65 and on your employer plan, dropping that plan leaves them uncovered. They may qualify for a COBRA bridge, an ACA Marketplace plan, or their own employer coverage. This needs to be coordinated before you switch.

⚠️ The Part B penalty is permanent — and it compounds

If your employer has fewer than 20 employees and you delayed Part B enrollment by 2 years past 65, you owe a 20% surcharge on your Part B premium for the rest of your life. In 2026, that's an extra $40.58/month — $487/year — every year, with no cap and no forgiveness. The penalty rises as the base premium rises. Three agents told one of my NC clients he was fine; his employer had 12 people. I caught it. Call (828) 761-3326 before you assume you're covered.

The difference

What changes depending on your employer's size?

What do you need to know?	Employer with 20+ employees	Rob Simm — NC #10447418
Who pays first?	Employer plan is primary, Medicare is secondary	I verify your employer size and coordination — free
Can you delay Part B?	Yes — no penalty as long as employer coverage is active	I confirm creditable coverage documentation is in order
What happens when you retire?	8-month SEP to enroll in Part B and Part D	I file your CMS-L564 and time every enrollment window
Under 20 employees?	Medicare is primary from age 65 — you may already owe penalties	I run the penalty math and find the fastest path to fix it
Spouse coordination	Dropping your plan may leave your spouse uncovered	I build a bridge plan for your spouse before you switch
Cost to get help	Medicare.gov won't check your employer size	$0 — I'm paid by the carrier, same commission regardless

2026 Medicare numbers

What will Medicare cost when you switch from employer coverage?

$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

You pay this before Medicare covers 80% of outpatient care.

$9,350

MA in-network out-of-pocket max

2026 cap on in-network Medicare Advantage spending.

$2,100

Part D out-of-pocket cap

No catastrophic Rx costs in 2026. Insulin capped at $35/month.

💡 Broker Tip — NC Working Past 65

Before you retire, get two documents from HR: your Certification of Creditable Coverage and the completed CMS-L564 form. These are your proof that you had qualifying employer coverage. Without them, Social Security may not honor your Special Enrollment Period — and you'll be stuck waiting for General Enrollment with a permanent penalty. I've seen NC employers refuse to fill out the L564 after an employee leaves. Get it while you still have an HR contact. Call (828) 761-3326 and I'll tell you exactly what to ask for.

— Rob Simm, Licensed Medicare Broker, NC #10447418

10 minutes. You'll know where you stand.

Rob Simm · Licensed NC Medicare Broker · NPN #10447418

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Licensed in North Carolina · Serving NC residents only

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Real scenario · North Carolina

What does a 2-year delay actually cost?

Didn't check employer size

+$40.58/mo

Worked past 65 for 2 years at a company with 12 employees. Never enrolled in Part B. Now owes a permanent 20% surcharge — $40.58/month extra on top of the $202.90 base — for life. That's $487/year with no cap and no forgiveness.

Called Rob first

$0 penalty

Same situation — but called (828) 761-3326 before retiring. Rob checked employer size (20+ employees), confirmed creditable coverage, filed the CMS-L564, and timed the SEP. Zero penalty. Zero gap in coverage. 10-minute call.

It pays to talk to the right broker

Why doesn't this cost me anything?

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

Can I have both employer insurance and Medicare at the same time in NC?

Yes. Many NC residents keep both during a transition period. If your employer has 20+ employees, your employer plan pays first and Medicare pays second. If your employer has fewer than 20 employees, Medicare pays first. The coordination matters — getting it wrong means claims get denied. Call (828) 761-3326 to sort out your specific coordination.

What is the Special Enrollment Period for Medicare after leaving employer coverage?

You get an 8-month Special Enrollment Period (SEP) that starts the month after your employer coverage ends or the month after you stop working — whichever comes first. You do not need to wait for the General Enrollment Period (Jan 1–Mar 31). Miss the 8-month SEP and you face permanent Part B penalties.

Will I pay a penalty if I delayed Medicare past 65 while working in NC?

Not if your employer has 20 or more employees and you had creditable coverage the entire time. You must get a Certification of Creditable Coverage from your employer's HR department. If your employer has fewer than 20 employees, Medicare was primary from day one — and you may already owe a 10% Part B penalty for every 12 months you delayed.

How much does Medicare Part B cost in 2026 if I switch from employer coverage?

The standard 2026 Part B premium is $202.90 per month with a $283 annual deductible. If your modified adjusted gross income exceeds $106,000 (single) or $212,000 (married filing jointly), you'll pay an IRMAA surcharge on top. Call (828) 761-3326 to run the exact math for your income.

What documents do I need to switch from employer insurance to Medicare in NC?

You need a Certification of Creditable Coverage (also called a Certificate of Group Health Plan Coverage) from your employer's HR department, plus your CMS-L564 form (Request for Employment Information). These prove you had qualifying coverage and protect you from late enrollment penalties. Rob Simm at (828) 761-3326 can walk you through the exact paperwork.

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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