Signing up for Medicare for the first time often feels like crossing an important milestone. After years of working and paying into the system, you finally have health coverage designed for your retirement years.

Then the mail arrives.

A deductible here. A coinsurance bill there. A copay sneaks in like an uninvited guest. Suddenly, you’re wondering:

“Wait… wasn’t Medicare supposed to cover this?”

Here’s the truth many people discover after enrolling:Original Medicare doesn’t cover everything.There are gaps in coverage—and those gaps can create unexpected healthcare costs.

That’s where Medigap, also called Medicare Supplement Insurance, enters the picture.

Key Points to Know

• Original Medicare hasdeductibles, coinsurance, and out-of-pocket costs.
• Medigap helps pay many of those remaining costs.
• The best time to enroll in Medigap is during your6-month open enrollment window.

Why Medigap Exists: Filling Medicare’s Financial Gaps

Think of Original Medicare as the foundation of a house. It provides solid coverage for hospital care and medical services.

But foundations alone don’t keep the rain out.

Medicare generally pays about 80% of approved medical costs, leaving beneficiaries responsible for the remaining portion. Those uncovered expenses may include:

● Hospital deductibles (over $1,600 per benefit period)

● 20% coinsurance for doctor visits and outpatient services

● Skilled nursing facility coinsurance

● Emergency care while traveling outside the U.S.

This is where Medigap policies help fill the financial gaps.

Medicare pays first.
Your Medigap plan helps pay the rest, depending on the plan you choose.

For many retirees, this meansfewer surprise medical bills and more predictable healthcare expenses.

Medigap vs. Medicare Advantage: The Confusion That Trips People Up

One of the biggest misunderstandings in Medicare planning involves the difference between Medigap and Medicare Advantage.

They sound similar, but they work very differently.

Medigap

● Works with Original Medicare

● Helps pay deductibles and coinsurance

● Allows you to see any doctor that accepts Medicare

Medicare Advantage

● Replaces Original Medicare

● Often includes networks and referrals

● May include extra benefits like dental or vision

You cannot use Medigap and Medicare Advantage together. Choosing between them depends on your healthcare needs, lifestyle, and financial preferences.

The “Secret” About Medigap Plans Most People Don’t Know

Medigap plans are labeled by letters—Plan A, Plan G, Plan N, and others.

Here’s the surprising part:

A Medigap plan with the same letter offers identical medical benefits regardless of the insurance company.

That means:

APlan G from Company A provides the same medical coverage as a Plan G from Company B.

So, what’s different?

● Monthly premium prices

● Rate stability

● Customer service

● Company reputation

In other words, the coverage stays the same—but the price and experience may vary.

Timing Matters: The 6-Month Medigap Enrollment Window

There is one moment in time when enrolling in Medigap is the easiest.

It’s called the Medigap Open Enrollment Period.

This six-month window begins when:

1.You are 65 or older, and

2.You are enrolled in Medicare Part B

During this time:

· Insurance companies can not deny you coverage

· They can not charge higher premiums for health conditions

Miss this window, and you may face:

· Medical underwriting

· Higher premiums

· Possible denial of coverage

That’s why timing can make a major financial difference.

Do Married Couples Need Two Medigap Plans?

Yes.

Unlike employer insurance plans, Medigap policies only cover one person.

Even spouses must purchase separate Medigap policies.

Each policy is tied to an individual Medicare beneficiary.

What Medigap Does NOT Cover

While Medigap can be extremely helpful, it doesn’t cover everything.

Medigap does not include:

· Prescription drugs (covered by Medicare Part D)

· Routine dental care

· Vision exams or glasses

· Hearing aids

· Long-term care such as nursing homes

Many retirees combine Medigap with a Part D drug plan and separate dental or vision coverage.

Is Medigap Worth It?

For many retirees, Medigap offers something extremely valuable:

Financial predictability.

Medigap is often attractive for people who:

· Visit doctors frequently

· Want freedom to see any Medicare provider nationwide

· Travel across state lines

· Prefer predictable healthcare costs

One important detail many people overlook:

Original Medicare has no annual out-of-pocket maximum.

Without supplemental coverage, costs could continue to accumulate.

Medigap helps reduce that uncertainty.

How to Choose a Medigap Plan

Choosing a Medigap policy doesn’t have to feel overwhelming.

A few smart steps can simplify the process:

· Choose the coverage letter (Plan G and Plan N are common choices)

· Compare premiums between companies

· Confirm the policy is labeled “Medicare Supplement Insurance”

Taking time to compare options can help ensure you choose a plan that fits your healthcare needs and budget.

Conclusion

Medicare provides a strong foundation for healthcare in retirement—but it isn’t designed to cover every expense.

Medigap helps bridge those financial gaps by reducing out-of-pocket costs and providing greater predictability for medical expenses.

For many retirees, this additional layer of protection can provide peace of mind when it comes to healthcare planning.

If you have questions about Medigap plans or want to understand how Medicare coverage works,Senior Help And You is an excellent resource for guidance and education.

📞Call 520-252-5275 to learn more.

Key Takeaways

• Original Medicare has coverage gaps that can lead to out-of-pocket costs.
• Medigap plans help pay deductibles, coinsurance, and other expenses.
• The 6-month Medigap enrollment period is the best time to enroll.

References:

America’s Health Insurance Plans. (n.d.).Medigap.https://www.ahip.org/issues/medigap

Centers for Medicare & Medicaid Services. (n.d.).Medigap (Medicare Supplement Health Insurance).https://www.cms.gov/medicare/health-drug-plans/medigapMedicare. (2025).Choosing a Medigap Policy.

https://www.medicare.gov/publications/02110-medigap-guide-health-insurance.pdfMedicare. (n.d.).What's Medicare Supplement Insurance (Medigap)?

https://www.medicare.gov/health-drug-plans/medigap

National Council on Aging. (2025).How to Change Your Medigap Policy: A Guide.

https://www.ncoa.org/article/how-to-change-your-medigap-policy/

Authored by:

Albert Ferrin RSSA®

Founder, Senior Help And You, LLC and AJF Insurance Services, LLC