Navigating the world of health insurance can be confusing, especially when it comes to understanding how different programs work together. For federal employees and retirees, this confusion is often amplified when trying to combine Medicare coverage with Federal Employee Health Benefits (FEHB). Don’t worry! This blog post will guide you through the intricacies of “how Medicare works with federal employee health insurance”, providing you with the knowledge and confidence to make informed decisions about your health coverage needs.
Key Takeaways
FEHB is not creditable coverage for Medicare Part B, outpatient care. Declining Medicare Part B coverage, once retired from the Federal Government, can lead to substantial late enrollment penalties later on.
FEHB is creditable coverage for Medicare Part D prescription drug coverage.
FEHB is Primary coverage while you are actively working for the federal government.
If you enroll in Medicare Part A but decline Part B coverage, your FEHB will be the Primary insurer.
If you enroll in Medicare Part A and Part B, and keep your FEHB after you retire. Your FEHB will act as a secondary supplement. In this case, FEHB plans should be compared to Medicare supplement Plan benefits and premiums.
When you enroll in Part B, you have a 180-day window (six-months) to get a Medicare supplement without any medical questions asked. After that 180-day period, you must qualify medically for a supplement and can be denied coverage.
Medicare supplement plan benefits never change. Once you have your plan, no can take it away from you, or change your benefits. Premiums can increase over time.
FEHB benefits can change annually. Premiums can increase over time.
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Understanding Medicare and Federal Employee Health Benefits (FEHB)

What is FEHB and how does it work with Medicare?
The Federal Employees Health Benefits (FEHB) Program is a comprehensive health insurance program designed for federal employees, retirees, and their families. It offers a variety of health insurance plans, including medical, dental, and vision coverage, ensuring that federal employees have access to essential health benefits. On the other hand, Medicare is a federal health insurance program primarily for individuals aged 65 or older, but it also covers certain younger individuals with disabilities and those with End-Stage Renal Disease (ESRD).
When a federal employee or retiree becomes eligible for Medicare, they have the option to enroll in both Medicare and FEHB simultaneously. In this scenario, FEHB and Medicare work together to provide a robust healthcare package. Typically, FEHB serves as the primary payer for most healthcare services, while Medicare Part B, which is a medical insurance covering doctor visits, preventive care, and other outpatient services, acts as the secondary payer. This coordination helps to maximize coverage and minimize out-of-pocket expenses for federal employees and retirees, ensuring they receive comprehensive healthcare benefits.
Assessing the Need for Medicare Part B with FEHB
If you choose to enroll in Medicare Part B while keeping your FEHB coverage, your FEHB coverage will be secondary, the same role as a standardized Medicare supplement. However, the benefits and costs of FEHB coverage are not tailored for Medicare.
The financial implications of FEHB premiums for retirees are significant, as the premiums are deducted from retirement annuities and can be higher compared to when employees were actively working.
In many cases, the FEHB premium is higher than those of Medicare supplement, with the benefits not as comparable.
I have seen cases where a person on an FEHB plan was paying three times more for her FHB plan that what she would be paying if she had a supplement. In addition, the changes in benefits over the years left her confused and stressed.
If she were to enroll in Part B after a decade among the federal retirees, her late enrollment penalty would double the cost of her Part B if she were to enroll in Part B with years of late enrollment penalty.
Pros and Cons of Part B Enrollment



People who choose to stay with FEHB coverage and enroll in Medicare Part B tend to do so because they are comfortable with their FEHB health insurance plan. They appreciate the covered services provided by their FEHB plan, which include lower copays and no deductibles. In addition, they read that if they quite FEHB they can’t get it back.
From my experience, such a fear tactic is often used when the facts do not support staying with the plan.
Most federal employees have good experiences with FEHB during their working years. Thus as retired federal employees they are comfortable continuing that relationship. Sadly, that comfort can prevent some from exploring the benefits of Medicare coverage combined with a supplement. As such, they miss out on obtaining the best health program available in the US.
Enrolling in Original Medicare plus a supplement allows you to see any doctor or visit any medical facility in the US or US territory as long as they accept Medicare. Nearly all non-pediatric physicians accept Original Medicare. In addition, no insurance company can delay or deny your benefits. Your healthcare is between you and your doctor.
With FEHB coverage as primary, your doctor must obtain pre-authorization (permission) from the insurance company before performing any non-urgent procedure. In addition, you are limited to an ever changing network of physicians. Your limited to a network.
With FEHB as secondary, you are often overpaying for a supplement that not standardized.
Medicare Enrollment for Federal Employees
When can you enroll in Medicare?



Federal employees and retirees have specific windows during which they can enroll in Medicare. The Initial Enrollment Period (IEP) is the primary opportunity, starting three months before their 65th birthday and ending three months after their 65th birthday. This seven-month window is crucial for timely enrollment without penalties.
If the IEP is missed, there is another chance to enroll during the General Enrollment Period (GEP), which runs from January 1 to March 31 each year. However, it’s important to note that enrolling during the GEP may result in a late enrollment penalty.
For federal employees who are still actively working and have FEHB coverage, there may not be an immediate need to enroll in Medicare Part B, as their FEHB plan will continue to serve as their primary coverage. However, enrolling in Medicare Part A is generally advisable since it is usually premium-free and provides valuable hospital insurance coverage. This strategic enrollment can help federal employees optimize their health benefits and reduce potential out-of-pocket costs.
Medicare Part A and Hospital Insurance



Medicare Part A is a cornerstone of Medicare, providing essential hospital insurance. It covers inpatient hospital stays, care in a skilled nursing facility, hospice care, and some home health care services. Most federal employees opt to enroll in Medicare Part A as soon as they are eligible because it is typically premium-free, provided they have paid enough in Medicare taxes during their working years. To qualify for premium-free Part A, you need to have at least 10 years (or 40 quarters) of Medicare-covered employment. This makes Medicare Part A a valuable addition to the health benefits that federal employees already receive through their FEHB plans.
Comparing FEHB and Medicare Advantage Plans
Medicare Advantage plans offer similar coverage to FEHB plans, but it’s important to explore your options since benefits can vary between plans. Medicare Advantage plans also cover services provided in a skilled nursing facility, which can be a crucial aspect of comprehensive health care coverage.
Coverage Comparison
FEHB plans generally provide more extensive coverage than Medicare Advantage plans, but the latter may have lower premiums and out-of-pocket costs. Both types of plans offer comprehensive health coverage.
Making the Right Choice



When choosing between FEHB and a Medicare Advantage plan, consider factors such as premium, coverage gaps and your maximum annual out-of-pocket limits. You may also want to consider the size of the provider network. A Medicare Advantage plan PPO may offer access to a larger network of medical professionals.
A Medicare Advantage plan and the FEHB plans have very similar strengths and weaknesses.
They both are limited to networks, with their benefits and costs changing annually.
If you have a chronic health condition, a Medicare Advantage Plan designed for your condition may be the better choice.
Navigating Prescription Drug Coverage (Part D) with FEHB



Most FEHBP enrollees don’t need to enroll in Medicare Part D, as their prescription drugs are adequately covered by their FEHB plan.
However, if you’re a low-income retiree, it’s essential to compare your FEHB drug plan with Medicare Part D options to determine which plan provides better coverage for your needs. Keep in mind that you can enroll in both FEHB and Part D, but be sure to contact your benefits administrator before enrolling in Part D to avoid losing your FEHBP coverage.
FEHB and Part D Coverage
FEHB prescription drug coverage is considered creditable for Medicare-eligible retirees, meaning it provides benefits that are as good as or better than those offered by Part D plans. If you choose to enroll in Part D, Medicare benefits for drugs will generally be primary in most cases for FEHB enrollees, with FEHB serving as secondary coverage.
Deciding on Part D Enrollment
When deciding whether to enroll in Medicare Part D, consider factors such as cost, coverage gaps, and any penalties for late enrollment. You should also evaluate your current medications and ensure that any potential Part D plan covers those prescriptions.
If you decide to enroll in Part D, you can do so online using Medicare’s plan finder tool or our part D website https://partdshopper.com/
Maximizing Health Benefits in Retirement
As federal retirees transition into retirement, making informed decisions about health insurance becomes crucial. The goal is to maximize health benefits while minimizing out-of-pocket costs. Understanding how FEHB and Medicare work together is key to achieving this balance. Federal employees need to be aware of the options available to them and how to best coordinate their FEHB coverage with Medicare. By doing so, they can ensure they have comprehensive health insurance that meets their needs throughout retirement.
Combining FEHB and Medicare for Better Benefits



Combining FEHB and Medicare can offer federal employees a robust healthcare package. While still working, federal employees can enroll in Medicare to complement their existing FEHB coverage. Medicare provides various options, including Medicare Advantage and Medicare Supplement plans, which can enhance the benefits provided by FEHB. By coordinating FEHB and Medicare coverage, federal employees can enjoy comprehensive healthcare benefits that cover a wide range of medical services and reduce out-of-pocket costs.
Summary
Navigating the world of health insurance can be complex, but understanding the interaction between Medicare and FEHB can help you make informed decisions about your health coverage.
Even more, let our Medicare experts help you make the right decision for your needs and your budget. Our services are free to you, the consumer.
Frequently Asked Questions
How FEHB and Medicare work together?
FEHB and Medicare can work together, but not as optimally as Medicare plus a supplement. No other health insurance program offers the strength of benefits and freedom to choose your provider like Medicare plus a supplement.
Do federal employees go on Medicare?
Yes, federal employees can go on Medicare when they reach the age of 65. They are usually eligible to enroll in Medicare Part A without having to pay a premium. This can help reduce their out-of-pocket expenses and costs associated with the FEHB program.
How does Medicare Part B work with FEHB?
Medicare Part B and Federal Employees Health Benefits (FEHB) can work together to provide comprehensive health coverage. Medicare becomes the primary insurance, paying for services first, with FEHB being the secondary insurer.
In this case, compare the benefits and cost of FEHB to that of a Medicare supplement plan.
Can you have Medicare and FEHB at the same time?
Yes, you can have Medicare and FEHB at the same time. However, if you are an active federal employee or a reemployed annuitant, your FEHB plan will be the primary insurer and Medicare will act as a secondary insurance, with the FEHB plan paying benefits before Medicare does.
Additional Resources for Federal Employees
Federal employees seeking more information about Medicare can access a variety of resources. They can download the “Your 2025 Kaiser Permanente FEHB Guide to Medicare” or call Kaiser Permanente Medicare specialists at 1-877-547-4909 (TTY 711) for personalized assistance. The guide is also available by mail and in both English and Spanish. Additionally, federal employees can view 2025 FEHB Medicare Plan Documents, including the 2025 FEHB Guide to Medicare and the One Pass Fitness Program Flyer, to better understand their options and make informed decisions about their health insurance coverage.
Sources:
https://www.opm.gov/healthcare-insurance/healthcare/medicare/medicare-vs-fehb-enrollment/