Article

Medicare Advantage vs. Medicare Supplement

Karlyn M. Jones Retirement Planning

Medicare is a vital healthcare program for seniors and other eligible individuals—and today, it can feel impossible to turn on the television or scroll online without encountering bold Medicare Advantage ads promising extra benefits and low costs, sometimes featuring familiar faces like Joe Namath. When offers sound too good to be true, it’s wise to pause and look beneath the surface. There are two common ways to help manage healthcare expenses: Medicare Advantage (Part C) and Medicare Supplement (Medigap) coverage, also known as Medigap insurance. While both extend benefits beyond Original Medicare, they function in distinct ways.

At-a-Glance Comparison

FeatureComparison
Provider networkMedigap: any provider who accepts Medicare.
Medicare Advantage: plan network; referrals may be required.
Monthly premiumMedigap: typically higher.
Medicare Advantage: often low or $0.
Out-of-pocket costsMedigap: predictable, minimal.
Medicare Advantage: copays and coinsurance can add up.
Extra benefits (dental, vision, hearing)Medigap: not included.
Medicare Advantage: often included.
Prescription drug coverageMedigap: requires a separate Part D policy.
Medicare Advantage: often bundled.

Medicare Supplement (Medigap): How it Works

Medicare Supplement plans work alongside Original Medicare (Part A & Part B) to help cover out-of-pocket expenses such as copayments, coinsurance, and deductibles. Unlike Medicare Advantage, Medigap plans do not replace Original Medicare but instead help fill the gaps in coverage. These plans provide coverage for expenses not covered by Original Medicare, meaning minimal surprise expenses for medical care.

One of the biggest advantages of Medigap plans is their flexibility. Enrollees can see any doctor or specialist that accepts Medicare without network restrictions. This feature makes Medigap particularly attractive for individuals who travel frequently or want the ability to choose their healthcare providers freely. However, Medigap plans generally come with higher monthly premiums, which may be a consideration for those on a fixed budget. Additionally, these plans do not include prescription drug coverage, meaning that an additional Medicare Part D policy is necessary.

Medicare Advantage (Part C): How It Works

Medicare Advantage plans are offered by private insurance companies and serve as an alternative to Original Medicare (Part A & Part B). These plans bundle hospital and medical coverage into a single plan and provide comprehensive coverage, including vision, dental, hearing, and wellness programs. Many of these plans also come with built-in Part D prescription drug coverage.

Most Medicare Advantage plans require enrollees to use a specific network provider and get referrals for specialists. While these networks help keep premium costs down, they limit provider options. For instance, if you travel outside your area, having to stick with a certain network can present an issue if you need medical attention, as your plan may not cover non-emergency care outside your area.

One of Medicare Advantage’s main advantages is its affordability, as these plans often have lower or no monthly premiums. However, out-of-pocket costs such as co-pays and coinsurance will add up over time, and as you age, you will likely need more medical attention.

Which Plan is Right for You?

Choosing between Medicare Advantage and Medigap depends on individual healthcare needs and preferences. Medicare Advantage may be the better option for those looking for an all-in-one plan with extra benefits, lower monthly premiums (but higher out-of-pocket expenses), and are comfortable using a network of providers. On the other hand, Medigap is ideal for individuals who want flexibility in choosing healthcare providers, predictable out-of-pocket costs, and do not mind paying higher monthly premiums.

You may ask yourself, “Well, if I pick one plan and don’t like it, I can just switch to the other.” Unfortunately, it is not as simple as that. If you switch from a Medicare Advantage plan to a Medigap plan, you will likely go through medical underwriting, which can significantly affect your premiums. There are exceptions, such as enrollees who are in the Medicare Advantage trial period. The trial period is the first year of enrollment in a Medicare Advantage plan; if the enrollee is unhappy with their coverage, they can disenroll and return to their original Medicare without going through underwriting.

Be mindful of the specific rules and deadlines, and consult with a Medicare advisor to ensure you understand the options available in your new location.

Frequently Asked Questions

Can I have both Medicare Advantage and a Medigap plan?

No. Medigap plans are designed to work alongside Original Medicare, not Medicare Advantage. You generally cannot be enrolled in both at the same time.

When can I switch between Medicare Advantage and Medigap?

You can typically switch during the Medicare Advantage Open Enrollment Period or Annual Enrollment Period, though moving to a Medigap plan after your initial enrollment window may require medical underwriting.

Does Medicare Advantage cost less than Medigap?

Medicare Advantage plans often have lower monthly premiums, but Medigap plans tend to offer more predictable out-of-pocket costs over time.

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