Should I enroll in Part A? - Yes!
Enrollment in Medicare Part A is automatic and most likely costs you nothing. So long as you or your spouse have worked for ten years, then you absolutely should enroll in Part A. 

Do I have to enroll in Part B? - No, but should you? It depends.
Enrollment in Medicare Part B is not mandatory and there are times when you should not enroll. The best advice I can give you is to talk to a professional about all of your options. The biggest mistake most people make is enrolling in Part B without talking to a Medicare Professional.

Let's look at a quick scenario:
Imagine you or your spouse have insurance from your employer. If that employer has 20 or more employees and you have credible health insurance through that employer, then you can choose to delay enrolling in Medicare Part B. By doing so, you won't have to pay any extra fees. In this situation, your employer's insurance becomes your main coverage, and you can sign up for Part B at a later time, such as when you retire or no longer have insurance through your employer. Why is this important? When you first go on Medicare Part B, you are in the "Initial Enrollment Period". You have 7 months to select any supplement and the insurance company can not ask you any questions.

Once you retire or lose your employer coverage, you can enroll in Medicare Part B during a Special Enrollment Period without paying any late enrollment penalties. 

If there are fewer than 20 employees at your or your spouse's workplace, then you should enroll in Medicare Part B.  In this case, if you are still working and have employer-sponsored health insurance, enrolling in Medicare Part B is generally recommended when you first become eligible. Delaying enrollment in Part B when you have fewer than 20 employees in your workplace can result in late enrollment penalties.

Now, here is one of the most important things to know.  If your workplace has fewer than 20 employees, when you turn 65 you will enter Medicare's Initial Enrollment Period. This period spans the seven months surrounding your 65th birthday when you become eligible to enroll in Medicare. If you are considering getting supplemental insurance, this is the time to do it! The reason for that is there will be no health related questions asked of you by insurance providers. After the initial enrollment 7 months are up or when you retire and need to get supplemental insurance, then the insurance company can ask health questions which can lead to them denying your coverage.

It's important to note that the specific rules and regulations regarding Medicare eligibility and enrollment can vary, so it's always best to consult with the Social Security Administration or a Medicare representative to get accurate and up-to-date information based on your circumstances. Consulting with an insurance professional will help you evaluate your situation and make an informed decision. They can provide guidance on enrollment, penalties, and how Part B fits into your overall healthcare coverage strategy.

Ultimately, the decision to enroll in Medicare Part B depends on your circumstances, including age, current coverage, healthcare needs, and potential penalties. Assessing these factors will help you determine whether enrolling in Part B is the right choice for you.