New Jersey Medicare AdvisoryBy New Jersey Medicare Advisory • May 11, 2026
If you're enrolled in Original Medicare (Parts A and B), you've probably noticed that it doesn't cover everything. Deductibles, coinsurance, and copayments can add up quickly. That's where Medicare Supplement Insurance—commonly called Medigap—comes in. These policies, sold by private insurance companies, help fill the "gaps" in Original Medicare coverage, giving you more predictable healthcare costs and greater peace of mind.
Medigap policies work alongside Original Medicare, not as a replacement. When you receive healthcare services, Original Medicare pays its share first, then your Medigap policy pays its share according to your plan's benefits. This coordination means you'll typically have fewer out-of-pocket expenses at the doctor's office or hospital.
It's important to understand that Medigap policies only work with Original Medicare. If you're enrolled in a Medicare Advantage plan (Part C), you cannot use a Medigap policy. Additionally, Medigap doesn't cover prescription drugs, so you'll need to enroll in a separate Part D plan if you want drug coverage.
Medigap policies are standardized by the federal government, meaning a Plan G from one insurance company offers the same basic benefits as Plan G from another company. However, premiums can vary significantly between carriers, which is why shopping around is essential.
Medigap policies are identified by letters: A, B, C, D, F, G, K, L, M, and N. Each letter represents a different set of standardized benefits. Here's what you should know:
Plans with Comprehensive Coverage: Plans F and G are among the most comprehensive options. Plan F covers nearly all out-of-pocket costs, but it's only available to those who became eligible for Medicare before January 1, 2020. Plan G has become the most popular choice for new Medicare beneficiaries because it offers comprehensive coverage with the exception of the Part B deductible.
Plans with Moderate Coverage: Plans D, M, and N offer solid coverage at lower premiums. Plan N, for example, covers most costs but requires small copayments for certain doctor visits and emergency room visits that don't result in admission.
Plans with Cost-Sharing: Plans K and L require you to pay a percentage of costs until you reach an annual out-of-pocket limit. These plans typically have the lowest premiums but require more cost-sharing.
Basic Coverage Plans: Plans A and B provide basic benefits, covering fewer gaps than other plans but also coming with lower monthly premiums.
Note that Plans C and F are no longer available to those newly eligible for Medicare, though current enrollees can keep their plans.
Medigap premiums vary based on several factors, including which plan letter you choose, which insurance company you select, and where you live in New Jersey. Insurance companies may use different pricing methods—some base premiums on your age, others on when you first bought the policy, and some charge everyone the same rate regardless of age.
The best time to buy a Medigap policy is during your Medigap Open Enrollment Period, which lasts for six months and begins when you're 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 due to health conditions.
You may also have guaranteed issue rights in certain special situations, such as when you're losing other coverage or when your insurance company goes out of business. Understanding these rights can save you money and ensure you get the coverage you need.
Selecting a Medigap plan requires careful consideration of your healthcare needs, budget, and preferences. Ask yourself: How often do you visit the doctor? Do you have chronic conditions requiring regular care? Do you want the predictability of comprehensive coverage, or are you comfortable with some cost-sharing in exchange for lower premiums?
Remember to compare premiums from multiple insurance companies, as prices can differ substantially even for identical coverage. Also consider the company's reputation, customer service record, and financial stability.
Navigating Medicare Supplement options doesn't have to be overwhelming. The licensed advisors at New Jersey Medicare Advisory are here to help you compare plans, understand your options, and find coverage that fits your needs and budget. We'll answer your questions in plain language and guide you through the enrollment process.
Call us today at 856-221-7051 to schedule a no-obligation consultation. Let's find the right Medigap plan for you together.