Medicare beneficiaries in Oklahoma may be able to get help paying for Original Medicare-related expenses by enrolling in a Medicare Supplement (Medigap) plan. Medigap plans in Oklahoma vary depending on the zip code you live in, so it may be a good idea to familiarize yourself with this type of health insurance to better understand which benefits are available under each particular plan.

How Medigap plans work in Oklahoma

In Oklahoma and the rest of the United States, Medigap plans are designed to help Medicare beneficiaries pay for expenses in Original Medicare, Part A and Part B, including copayments, coinsurance, and deductibles. Depending on the plan, some Medicare Supplement plans may also offer coverage for other expenses not covered by Original Medicare, such as overseas emergency health coverage or Part B excess charges (the difference between what your provider may charge you and the Medicare-approved cost for a service).

There are 10 standardized Medicare Supplement plans available in 47 states, including Oklahoma. Each Medigap plan is identified by one of 10 letters (A, B, C, D, F, G, K, L, M, and N), with plans of the same letter offering the same benefits. Three states–Massachusetts, Minnesota, and Wisconsin–offer different types of standardized Medigap plans.

If you’re considering this type of coverage, the first thing you need to know is that you must be enrolled in Original Medicare, Part A and Part B, in order to sign up for a Medigap plan in Oklahoma. You can enroll in a Medigap plan in Oklahoma during your Medigap Open Enrollment Period, which begins the first day you are both age 65 or older and enrolled in Medicare Part B; this enrollment period lasts for six months and is typically the best time to enroll in Medicare Supplement coverage. That’s because during this time, you have “guaranteed-issue rights.” This means you’re allowed to sign up for any Medigap plan available in your area, with any insurance company, and you cannot be denied coverage altogether because of pre-existing conditions or required to undergo medical underwriting. Keep in mind that even though you cannot be denied coverage because of your health status, insurance companies are allowed to make you wait up to six months before covering your pre-existing conditions; after this waiting period is over, however, the plan will cover your pre-existing conditions. Once your Medigap Open Enrollment Period has ended, it may be much harder for you to enroll in a Medigap plan, especially if you have health problems — you may be charged more for your insurance plan or even denied coverage altogether. In certain situations, you may be able to switch plans with guaranteed-issue rights (for example, if your Medigap insurance company misled you or goes bankrupt).

Since Medigap in Oklahoma is designed to supplement, rather than replace, Original Medicare, you must remain enrolled in Original Medicare and continue paying your Medicare Part B premium to retain your health insurance coverage. If you need prescription drug coverage as well, you may want to thinking about signing up for Medicare Part D, since Medigap in Oklahoma (like the rest of the country) does not offer prescription drug coverage. You can get this coverage through a stand-alone Medicare Prescription Drug Plan, which works alongside your Original Medicare coverage.

Remember, Medicare Supplement plans can only be used to pay for Original Medicare costs. If you decide to switch from Original Medicare to a Medicare Advantage plan, you can’t use your Medigap plan to pay for costs you may have with your Medicare Advantage plan.

Types of Medigap plans in Oklahoma

There are many types of Medigap plans in Oklahoma, although insurance companies aren’t required to offer every plan type, and not every plan may be available in your location. Take a look at the 10 types of standardized Medicare Supplement plans that may be available in your area to find the plan that’s best suited to your health needs.


Medicare Supplement Plans
Medicare Supplement Benefits A B C D F* G K L M N
Medicare Part A coinsurance and hospital costs up to an additional
365 days after Medicare benefits are exhausted
Medicare Part B copayment or coinsurance X X X X X X 50% 75% X X***
First three pints of blood X X X X X X 50% 75% X X
Medicare Part A hospice care coinsurance or copayment X X X X X X 50% 75% X X
Skilled nursing facility (SNF) care coinsurance X X X X 50% 75% X X
Medicare Part A deductible X X X X X 50% 75% 50% X
Medicare Part B deductible X X
Medicare Part B ‘excess charges’ X X
Foreign travel emergency coverage (up to plan limits) 80% 80% 80% 80% 80% 80%
Medicare Part B preventive care coinsurance X X X X X X X X X X
Out-of-pocket limits apply**


Additionally, be aware that Medicare Supplement Plan N pays 100% of the Medicare Part B coinsurance, but does not cover up to $20 copayment on some office visits and up to $50 copayment on emergency room visits that don’t result in an inpatient admission. Also note that Medicare Supplement Plan K and Plan L have out-of-pocket limits that are subject to change each year.

Medicare beneficiaries in Oklahoma seeking comprehensive coverage may want to take a closer look at Medicare Supplement Plan F, which covers almost 100% of Medicare-associated costs in the above benefits chart after Original Medicare has paid its share, excluding the Medicare Part B premium. 

Choosing a Medigap plan in Oklahoma

Medicare Supplement plans in Oklahoma with the same letter designation don’t vary in coverage or benefits, as explained above. However, keep in mind that each independent insurance company that offers Medicare Supplement plans can determine its own monthly premium structure. This means that a resident of Oklahoma City, in Oklahoma County, may pay more or less than a resident of Norman in Cleveland County for an identical Medicare Supplement plan. Because costs may vary so much between plans, it may be smart to compare all Medicare Supplement plans available in your area to find the coverage you want at the best price, since benefits are exactly the same across plans of the same letter type.

As you can see, there are various Medicare Supplement plans available in Oklahoma. To get help choosing the Medigap plan that suits your individual budget and health needs, you can call the phone number on this page to reach a licensed insurance agent. Or, to start comparing plan options immediately, just enter your zip code into the plan finder tool on this page.

To get more information about Medicare insurance in Oklahoma, check out the following resources:


Medicare Supplement insurance plans are not connected with or endorsed by the U.S. government or the federal Medicare program.