If you are enrolled in Original Medicare in the Chicago area, you already know that Parts A and B cover a wide range of hospital and medical services. However, you also know that they leave gaps: deductibles, copayments, coinsurance, and no cap on out-of-pocket costs. This is where Medicare supplement plans, also called Medigap, come into play. These plans are designed to fill those gaps, giving you predictable health care costs and peace of mind. For residents of Chicago, IL, understanding your options is essential because the right plan can save you thousands of dollars each year. The city has a robust network of hospitals and specialists, and with a Medigap policy you can access them without worrying about network restrictions. Let us walk through everything you need to know about finding and enrolling in the best Medicare supplement plans near Chicago, IL.

Why Chicago Seniors Need a Medigap Policy

Original Medicare leaves beneficiaries with significant cost-sharing responsibilities. In 2026, the Part A deductible is projected to be around $1,700 per benefit period, and Part B coinsurance is typically 20 percent of the Medicare-approved amount for most services. These costs can add up quickly, especially if you have a chronic condition or require frequent hospital stays. A Medigap policy covers some or all of these expenses, depending on the plan you choose. For Chicago residents, this is particularly important because the city’s top-tier medical facilities, such as Northwestern Memorial Hospital and Rush University Medical Center, can generate high out-of-pocket costs if you lack supplemental coverage. By enrolling in a Medigap plan, you protect yourself from surprise bills and ensure that your health care decisions are based on medical need, not cost.

Understanding the Different Medigap Plan Types

Medicare supplement plans are standardized and identified by letters: A, B, C, D, F, G, K, L, M, and N. Each plan offers a different level of coverage, but the benefits for a given plan letter are identical across all insurance companies. This makes it easy to compare prices without worrying about differences in coverage. The most popular plans among Chicago seniors are Plan G and Plan N. Plan G covers everything except the Part B deductible, which means you pay a small premium but have virtually no out-of-pocket costs when you receive care. Plan N requires you to pay a small copayment for doctor visits and emergency room visits, but it has a lower monthly premium. Plans C and F are also available, but only to those who became eligible for Medicare before January 1, 2020. If you are new to Medicare in 2026, you cannot enroll in those plans.

Comparing Plan G and Plan N for Chicago Residents

Plan G is often called the comprehensive choice. It covers the Part A coinsurance and hospital costs up to an additional 365 days after Medicare benefits are exhausted. It also covers Part B coinsurance or copayment, blood (first three pints), Part A hospice care coinsurance or copayment, skilled nursing facility care coinsurance, and the Part B excess charges. The only expense it does not cover is the Part B deductible, which is about $233 in 2026. For Chicago residents who visit specialists frequently or want maximum predictability, Plan G is a strong option. Plan N, on the other hand, covers all of the same benefits except that it requires a $20 copayment for some doctor visits and a $50 copayment for emergency room visits that do not result in inpatient admission. The trade-off is a lower monthly premium. If you are generally healthy and do not mind a small copay, Plan N can save you money. To decide which plan fits your needs, review our Best Medicare Supplement Plans: 2026 Guide for Seniors for a detailed breakdown of each option.

How Insurance Companies Price Medigap Policies in Chicago

Even though the benefits of each plan letter are standardized, insurance companies can set their own premiums. In Illinois, insurers use three main pricing methods: community-rated, issue-age-rated, and attained-age-rated. Community-rated plans charge the same premium to everyone regardless of age, which can be beneficial for older enrollees. Issue-age-rated plans base the premium on your age at the time of purchase, and the rate does not increase as you get older beyond normal inflation adjustments. Attained-age-rated plans increase your premium as you age, which means the cost can rise significantly over time. When comparing Medicare supplement plans near Chicago, IL, you should ask each insurer which pricing method they use. A plan that seems affordable today might become expensive later if it uses attained-age rating. On the other hand, a community-rated plan may have a higher initial premium but provide more stable costs in the long run.

When and How to Enroll in a Medigap Plan

The best time to buy a Medicare supplement plan is during your Medigap Open Enrollment Period. This six-month window begins on the first day of the month in which you are both 65 or older and enrolled in Medicare Part B. During this period, you have guaranteed issue rights, meaning insurance companies cannot deny you coverage or charge you more based on pre-existing conditions. If you miss this window, you may still be able to buy a policy, but insurers can use medical underwriting to set your premium or deny coverage. In Chicago, where the population is diverse and includes many retirees, it is critical to plan your enrollment carefully. If you are still working and have employer coverage after age 65, you may want to delay Part B to avoid paying premiums for coverage you do not need. However, once you retire, you have a special enrollment period to sign up for Part B and then a Medigap plan. For help navigating these timelines, see our guide on Choosing the Best Medicare Supplement Plan for Seniors.

Local Considerations for Chicago Medicare Beneficiaries

Chicago is a large metropolitan area with a mix of urban, suburban, and rural communities. Your choice of Medigap plan may depend on where you live within the region. For example, if you reside in Cook County, you have access to a wide range of hospitals and specialists, but you may also face higher health care costs than someone in a less expensive area. Medigap plans do not have provider networks, so you can see any doctor or hospital that accepts Medicare. This is a major advantage over Medicare Advantage plans, which often have restricted networks. However, you must pay monthly premiums for Medigap in addition to your Part B premium. Some Chicago seniors choose to pair a Medigap policy with a standalone Part D prescription drug plan to ensure comprehensive coverage. It is also worth noting that Illinois has specific rules about Medigap plans for beneficiaries under 65 who qualify due to disability. In Illinois, insurers are not required to sell Medigap policies to people under 65, but some do. If you are under 65 and on Medicare due to disability, you should shop around and compare options carefully.

Steps to Find the Best Medigap Policy in Chicago

Finding the right Medicare supplement plan requires a systematic approach. Here are the steps you should follow:

• Assess your health needs: List your current doctors, medications, and expected medical services for the coming year. If you travel frequently, consider a plan that covers foreign travel emergency care, which is included in Plans C, D, F, G, M, and N.
• Compare plan benefits: Use a standardized comparison chart to see what each plan letter covers. Decide which gaps are most important for you to fill.
• Get quotes from multiple insurers: Contact several insurance companies that sell Medigap policies in Illinois. Request quotes for the same plan letter so you can compare prices directly.
• Check the insurer’s financial strength: Look up ratings from A.M. Best or Standard & Poor’s to ensure the company is stable and will be able to pay claims.
• Read customer reviews: Search for feedback from other Chicago policyholders about customer service, claims processing, and rate stability.

After completing these steps, you will have a clear picture of which plan and insurer best meet your needs. Remember that the cheapest policy is not always the best if the company has poor customer service or a history of large premium increases. For a deeper look at the top plans for the coming year, review our analysis of Choosing the Best Medicare Supplement Plans for 2026.

Cost of Medigap Plans in Chicago

The monthly premium for a Medicare supplement plan in Chicago can vary widely depending on your age, gender, tobacco use, and the insurance company. For a 65-year-old non-smoker, Plan G premiums typically range from $120 to $200 per month. Plan N premiums are often lower, ranging from $90 to $150 per month. Some insurers offer discounts for paying annually or for being a non-smoker. It is important to get personalized quotes because rates differ significantly between companies. For example, one insurer might charge $130 for Plan G while another charges $180 for the same coverage. You can use online comparison tools or work with an independent agent who represents multiple carriers. In Chicago, you also have the option to buy from a local agent or through a national online broker. Both approaches have advantages, but the key is to compare multiple offers before making a decision.

Medigap vs. Medicare Advantage in Chicago

Many Chicago seniors face the choice between a Medigap policy and a Medicare Advantage plan. Medicare Advantage plans, also known as Part C, combine Parts A and B and often include prescription drug coverage. These plans usually have lower monthly premiums but require you to use a network of providers. In Chicago, popular Medicare Advantage plans are offered by Blue Cross Blue Shield of Illinois, Aetna, and Humana. While these plans can be a good value for healthy individuals, they may not be ideal for those who want the freedom to see any specialist at Northwestern Medicine or the University of Chicago Medical Center. Medigap policies give you that freedom, but you pay higher monthly premiums. Additionally, Medigap plans do not include prescription drug coverage, so you need a separate Part D plan. If you value flexibility and predictability, Medigap is usually the better choice. If you are willing to accept network restrictions in exchange for lower costs, a Medicare Advantage plan might work for you. To explore how these options compare with your health needs, read our guide on Choosing the Right Medicare Supplement Insurance Plan for Your Health.

Frequently Asked Questions

Can I switch Medigap plans after my open enrollment period?

Yes, but you may have to go through medical underwriting. If you have health conditions, you could be denied or charged higher premiums. Some states offer guaranteed issue rights in certain situations, such as when your Medicare Advantage plan leaves the area. In Illinois, you have limited guaranteed issue rights outside of open enrollment, so switching plans can be difficult.

Does Medigap cover prescription drugs?

No. Medicare supplement plans do not include prescription drug coverage. You need to enroll in a standalone Part D plan to get coverage for medications. You can enroll in a Part D plan during the annual enrollment period or when you first become eligible for Medicare.

Are Medigap premiums tax deductible?

Medigap premiums are considered medical expenses for tax purposes. If you itemize deductions and your total medical expenses exceed 7.5 percent of your adjusted gross income, you can deduct the premiums along with other qualified medical costs.

What happens if I move to another state after buying a Medigap policy?

Medigap policies are portable, meaning you can keep your coverage even if you move to another state. However, the premium may change based on your new location. If you move to a state with different Medigap regulations, the insurer may adjust your rate. Always notify your insurance company of your new address.

Can I have both a Medigap policy and a Medicare Advantage plan?

No. You cannot have both. You must choose between Original Medicare with a Medigap policy and a Medicare Advantage plan. If you enroll in a Medicare Advantage plan, you cannot use a Medigap policy to cover cost-sharing. If you later switch back to Original Medicare, you may be able to buy a Medigap policy, but you could face underwriting.

Choosing the right Medicare supplement plan in Chicago requires careful research and comparison. The city offers a wealth of health care options, and with the right Medigap policy, you can access them with confidence. Start by evaluating your health needs, comparing plan letters, and getting quotes from multiple insurers. Whether you choose Plan G for comprehensive coverage or Plan N for lower premiums, the security of knowing your out-of-pocket costs are capped is invaluable. If you have questions or want personalized help, call our team at (833) 203-6742. We are here to guide you through the process and help you find a plan that fits your budget and lifestyle.