Roy Snarr


Snarr Financial & Insurance Services, Inc.

Choosing Between Medigap and Medicare Advantage Plans

Navigating Medicare options may be daunting for retirees. Two primary paths exist: Medigap policies and Medicare Advantage plans. Each has distinct features and implications, especially when considering long-term flexibility and potential cost implications. This article explores each option's key differences and potential pitfalls, offering guidance for making informed decisions at retirement.

Understanding Medigap and Medicare Advantage Plans

Medigap Policies: Medigap, or Medicare Supplement Insurance, helps cover costs not included in Original Medicare (Parts A and B), such as copayments, coinsurance, and deductibles. Medigap policies offer broader access to healthcare providers and do not typically require pre-approvals for services. However, Medigap policies often have higher premiums and do not include additional dental or vision care benefits.

Medicare Advantage Plans: Medicare Advantage (Part C) plans are an alternative to Original Medicare, offered by private insurance companies. These plans usually have lower premiums and include additional benefits like dental, vision, and wellness programs. However, they may have network restrictions and require prior approvals for services and medications.

Initial Enrollment Flexibility

At age 65, new retirees have a guaranteed issue period during which Medigap insurers must accept them regardless of health status. This ensures access to Medigap policies without medical underwriting or higher premiums due to pre-existing conditions. However, this flexibility is limited to the initial enrollment period.

In contrast, Medicare Advantage plans are appealing due to their low premiums and added benefits, making them a popular choice among new retirees. However, transitioning from a Medicare Advantage plan to a Medigap policy later may be problematic due to stringent underwriting requirements and potential rejections based on health conditions.

Challenges of Switching Plans

From Medigap to Medicare Advantage: Retirees may generally switch from Medigap to Medicare Advantage plans without significant hurdles. The transition is straightforward, allowing for lower premiums and additional benefits, albeit with network restrictions.

From Medicare Advantage to Medigap: The reverse transition is more complicated. After the initial enrollment period, Medigap insurers may impose medical underwriting and deny coverage based on health conditions. This creates a de facto lock-in situation for retirees who initially choose Medicare Advantage plans, making it difficult to switch to Medigap if their health needs change.

State Variations and Exceptions

Some states, like New York, Connecticut, Massachusetts, and Maine, have more lenient policies allowing retirees to switch between plans without medical underwriting. These states offer a guaranteed issue policy, ensuring that retirees may access Medigap plans regardless of their health status. However, due to the broader access, Medigap premiums in these states tend to be higher.

Additionally, several states have a Medigap "birthday rule," allowing policyholders to change their Medigap plan within a specific period around their birthday without undergoing medical underwriting. This rule is designed to provide flexibility in adjusting coverage as needs change.

The Financial Implications

Switching from a Medicare Advantage plan to a Medigap policy may also have financial consequences. Even if a Medigap insurer accepts a retiree, they may face higher premiums based on pre-existing conditions. This may lead to significant out-of-pocket expenses, especially for those with chronic health issues.

For retirees rejected by Medigap insurers, the alternative is to revert to Original Medicare with a separate drug plan. However, this option lacks catastrophic coverage, exposing retirees to potentially high medical costs. Medicare Advantage plans, by contrast, cap out-of-pocket expenses, providing some financial protection.

Policy Recommendations

To address these challenges, researchers from the University of Southern California suggest reducing overpayments to Medicare Advantage insurers and using the savings to enhance traditional Medicare benefits, including catastrophic coverage. This would reduce the necessity of Medigap policies and make them more affordable and accessible.


Choosing between Medigap and Medicare Advantage plans requires careful consideration of current and future health needs, financial situation, and the flexibility each plan offers. Retirees must weigh the appeal of low premiums and additional benefits against the potential restrictions and difficulties in switching plans later.

To make informed decisions, retirees should:

  1. Evaluate Health Needs: Consider current and potential future health conditions. Medigap offers more flexibility for accessing specialists and treatments, which might be crucial for those with chronic or serious health issues.
  2. Understand Financial Implications: Calculate the total cost of premiums, out-of-pocket expenses, and potential future costs. While Medicare Advantage plans may have lower upfront costs, Medigap plans may provide better long-term financial predictability, especially if health needs increase.
  3. Consider State Regulations: Be aware of state-specific rules and protections that may offer additional flexibility in switching plans. States with guaranteed issue policies or the birthday rule may provide more options for adjusting coverage as needs change.
  4. Consult with an Independent Agent: An experienced, independent insurance agent may provide unbiased advice tailored to individual needs and help navigate the complexities of Medicare options.
  5. Plan Ahead: Make strategic decisions during the initial enrollment period at age 65 to maximize future flexibility. Retirees should avoid making decisions based solely on immediate cost savings and consider long-term health and financial stability.

By taking these steps, retirees may choose the Medicare plan that best suits their current and future needs, ensuring they receive the necessary coverage and care without unexpected financial burdens. Understanding the intricacies of Medigap and Medicare Advantage plans empowers retirees to make choices that support their well-being throughout retirement.

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Roy Snarr picture

Roy Snarr

Snarr Financial & Insurance Services, Inc.

1640 Highland Falls Dr.

Suite 101

Leander, Texas 78641

(512) 591-8814

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