What is the difference between Medicare Advantage Plan and Medicare Supplement Insurance Plans (Medigap)?

Medicare, is a federal program for individuals aged 65 and older, and offers various options that enhance your benefits that aren’t covered by Original Medicare. Two such options are: Medicare Advantage Plans and Medicare Supplement Plans.

Understanding the differences between Medicare Advantage Plans and Medicare Supplement Insurance Plans (Medigap) is crucial for individuals approaching the age of 65. These two options serve distinct purposes and have significant impacts on healthcare coverage. In this blog post, we will explore the disparities between Medicare Advantage Plans and Medicare Supplement Insurance Plans.

Medicare Advantage Plans: An Alternative to Original Medicare

What is a Medicare Advantage Plan?

Medicare Advantage Plans, also known as Medicare Part C, offer an alternative to Original Medicare. These plans are provided by private insurance companies approved by Medicare and often include additional coverage options like prescription drugs, dental, vision, and hearing services.

Medicare Advantage bundles the coverage of Medicare Parts A, B, and sometimes Part D into a single plan. Beneficiaries must have Medicare Part A and Part B to enroll.

Each year the Medicare Part B premium, deductible, and coinsurance rates are determined according to the Social Security Act.

How Do These Plans Work?

Medicare Advantage Plans operate by consolidating the coverage of Medicare Parts A, B, and occasionally Part D (prescription drug coverage) into one comprehensive plan.

Consequently, rather than obtaining healthcare services through the conventional Medicare fee-for-service model, individuals enrolled in a Medicare Advantage Plan receive their benefits from a private insurance company.

To be eligible for A Medicare Plan you must be enrolled in Medicare Part A and B.

Types of Medicare Advantage Plans

  1. Health Maintenance Organization (HMO) Plans: Require using network providers and referrals for specialist visits.
  2. Preferred Provider Organization (PPO) Plans: Offer more provider flexibility and out-of-network coverage at higher costs.
  3. Private Fee-for-Service (PFFS) Plans: Providers must accept the plan’s payment terms on a case-by-case basis.
  4. Special Needs Plans (SNPs): Tailored to individuals with specific health conditions or institutional residence.
  5. Medical Savings Account (MSA) Plans: Combine high-deductible health insurance with a medical savings account.

Pros and Cons of Medicare Advantage Plans


  1. Comprehensive coverage: Medicare Advantage Plans cover beyond what is offered by Original Medicare. This may include prescription drug coverage, dental, vision, hearing services, and wellness programs. These additional benefits can enhance the overall healthcare experience.
  2. Lower monthly premiums: Medicare Advantage Plans generally have lower monthly premiums compared to Medigap Plans. This can help individuals save on their healthcare costs, especially if they are on a tight budget.
  3. Care coordination: Many Medicare Advantage Plans offer a care coordinator or case manager who can assist beneficiaries in navigating their healthcare needs. This personalized support can help streamline the healthcare process and ensure that all necessary services are accessed.


  1. Network restrictions: Medicare Advantage Plans typically have network restrictions, meaning that beneficiaries must use healthcare providers within the plan’s network. This can limit the choice of doctors, hospitals, and specialists. Out-of-network services may not be covered, except in emergency situations.
  2. Prior authorization and referrals: Some Medicare Advantage Plans require beneficiaries to obtain prior authorization for certain services or referrals from a primary care physician (PCP) to see specialists. This added step can introduce delays and administrative hurdles in accessing care.
  3. Limited coverage outside the service area: Medicare Advantage Plans may have limited coverage outside the plan’s designated service area. This can be a concern for individuals who frequently travel or have residences in multiple locations. It’s important to understand the plan’s coverage rules and limitations when considering a Medicare Advantage Plan.

Medicare Supplement Insurance Plans (Medigap): Enhancing Your Original Medicare Coverage

What is a Medicare Supplement (Medigap) Plan?

Medigap Plans work alongside Original Medicare (Parts A and B) and fill the gaps in coverage left by Original Medicare. These private health insurance policies cover deductibles, copayments, and coinsurance. To be eligible for a Medigap Plan, one must be enrolled in both Medicare Part A and Part B.

How Do Supplement Plans Work?

  1. Enrollment in Original Medicare (Part A and Part B) is required.
  2. Original Medicare covers approved healthcare services, while Medigap Plans cover the gaps.
  3. Medigap Plans are standardized and labeled with letters A, B, C, D, F, G, K, L, M, and N.
  4. Beneficiaries pay a monthly premium to the insurance company offering the Medigap Plan.
  5. Medigap Plans allow the freedom to choose any healthcare provider that accepts Medicare.
  6. Medigap Plans do not include prescription drug coverage.

To buy a Medigap policy, you can contact private insurance brokers that offer medigap insurance and compare their coverage, benefits, and costs to select the policy that best fits your needs.

Types of Medigap Policies

Medigap policies serve the purpose of bridging the gaps in Original Medicare coverage, which include copayments, deductibles, and other out-of-pocket expenses.

There are ten standardized types of Medigap policies available, distinguished by alphabetical labels.

  • Among these policies, Medigap Plan A is the most fundamental, offering coverage for only a few essential benefits. In contrast, Medigap Plan F provides the most comprehensive coverage, encompassing all benefits offered by Medicare Parts A and B.
  • For comprehensive coverage, Medigap Plan G is the recommended choice. However, it does not include coverage for Medicare Part B.
  • Additional policy options include Medigap Plans C, Part D Plan, K, L, M, and N, each offering varying levels of coverage.

When selecting a Medigap policy, it is crucial to assess your healthcare needs and budget carefully. This ensures that you choose the policy that best suits your situation and provides peace of mind during your retirement years.

Pros and Cons of Supplement Plans


  • Comprehensive coverage, freedom to choose providers, no referrals or prior authorization.


  • No prescription drug coverage, limited plan options, potential discontinuation.

The Key Differences Between Medicare Advantage and Medicare Supplement Plans: Comparing Medigap And Medicare Advantage and

Medicare beneficiaries have two popular options to enhance their healthcare coverage: Medicare Advantage and Medicare Supplement Plans.

Comparing Costs: Premiums, Deductibles, and Out-of-Pocket Expenses

One notable distinction lies in the costs associated with these plans. Medicare Advantage Plans usually have lower premiums and often include prescription drug coverage, but they may entail higher out-of-pocket expenses and deductibles compared to Medicare Supplement Plans. Conversely, Medicare Supplement Plans come with higher premiums but offer more comprehensive coverage with minimal to no out-of-pocket expenses.

Provider Networks: Acceptance of Medicare Plans

Another significant difference relates to provider networks. Medicare Advantage Plans typically feature a more limited network of providers, whereas Medicare Supplement Plans allow beneficiaries to seek care from any doctor or hospital that accepts Medicare.

Additional Benefits: What’s Included in Each Plan?

Lastly, additional benefits vary between the plans. Certain Medicare Advantage Plans may provide extras such as vision or dental coverage, gym memberships, or wellness programs. Conversely, Medicare Supplement Plans generally focus on covering traditional medical expenses. Ultimately, it is important to select the plan that aligns with your budget, healthcare needs, and personal preferences.

Making the Right Decision: Medicare Advantage Plan or Medigap Plan?

When faced with the choice between Medigap and Medicare Advantage, it is crucial to consider several factors before making a decision. Let’s delve into each aspect in detail:

Evaluating Your Health Care Needs

Begin by evaluating your individual healthcare requirements. Take into account factors such as your current health status, prescription medication needs, and preferred healthcare providers. Medicare Advantage Plans typically provide comprehensive coverage, including prescription drugs and additional benefits like dental and vision care.

On the other hand, Medicare Supplement Plans work alongside Original Medicare and offer more flexibility in selecting doctors and specialists.

Comparing Plans in Your Area: How to Shop for the Best Options

To compare available options in your area, visit the official Medicare website or consult a licensed insurance agent. Compare costs, coverage, provider networks, and additional benefits offered by various Medicare Advantage and Medicare Supplement Plans. Examine premiums, deductibles, copayments, and coinsurance to assess the overall cost of each plan.

Can I Have a Medicare Advantage and Medicare Supplement Plan at the Same Time?

No, it is not possible to have both a Medicare Advantage Plan and a Medicare Supplement Plan at the same time. These two types of plans serve as alternatives to one another.

Switching Plans: Returning to Original Medicare or Changing Your Coverage

If you are currently enrolled in a Medicare Advantage Plan and wish to switch back to Original Medicare, you can do so during the Medicare Advantage Disenrollment Period, which takes place from January 1 to February 14 each year.

Additionally, from October 15 to December 7, you can switch between Medicare Advantage Plans or transition from Original Medicare to a Medicare Advantage Plan. Medicare Supplement Plans can be changed at any time throughout the year, subject to underwriting and availability.

What Is The Difference Between a Medicare Advantage Plan & Medicare Supplement Plan: Bottom Line

Medicare Advantage Plans offer comprehensive coverage with added benefits but have network restrictions and potentially higher out-of-pocket costs. Medigap Plans provide flexibility, predictable costs, and fill the gaps in Original Medicare, but they generally have higher premiums and do not include prescription drug coverage. Consider your needs, preferred providers, budget, and desired coverage level when choosing between the two options.

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