Turning 65 Soon? What Most People Get Wrong About Medicare

Mistake #1: Thinking Medicare and Social Security Start at the Same Time

A lot of people connect Medicare and Social Security in their minds.

That makes sense because both are federal programs and both often come up around retirement age.

But they are not the same thing.

Medicare eligibility usually begins at 65. Social Security retirement benefits may start earlier, later, or at full retirement age depending on your situation. For many people born in 1960 or later, full retirement age for Social Security is 67, but Medicare still starts at 65.

That means you may need to make Medicare decisions even if you are not ready to collect Social Security yet.

This is especially important if you are still working, covered by a spouse’s employer plan, or planning to delay retirement. You may have choices, but you also need to understand the timing.

Mistake #2: Assuming You Are Automatically Enrolled

Some people are automatically enrolled in Medicare Part A and Part B when they turn 65.

But not everyone is.

If you are already receiving Social Security benefits at least four months before you turn 65, Medicare says you will generally be enrolled automatically and receive your Medicare card before coverage starts.

But if you are not receiving Social Security benefits yet, you may need to actively sign up.

That’s where people get into trouble.

Your Initial Enrollment Period usually lasts seven months. It starts three months before the month you turn 65, includes your birthday month, and ends three months after your birthday month.

If you miss that window and do not qualify for a Special Enrollment Period, you may face delays and late enrollment penalties.

And those penalties are not always one-time fees.

Mistake #3: Waiting Too Long Because You Feel Healthy

Many people say:

“I don’t really go to the doctor.”
“I don’t take many prescriptions.”
“I’ll deal with Medicare later.”

But Medicare is not only about what you need today.

It is also about protecting yourself from avoidable problems later.

For example, if you delay Part B without qualifying employer coverage, you may have to pay a late enrollment penalty. Medicare explains that the Part B penalty is generally 10% for each full 12-month period you could have had Part B but did not sign up. That penalty is added to your monthly premium and usually lasts as long as you have Part B.

Part D prescription drug coverage has its own penalty rules too. Even if you do not take prescriptions now, going without Medicare drug coverage or other creditable prescription drug coverage for too long may create a penalty if you enroll later. Medicare calculates the Part D penalty using 1% of the national base beneficiary premium multiplied by the number of full uncovered months.

So the question is not only:

“Do I need coverage right now?”

It is also:

“Am I setting myself up correctly for the future?”

Mistake #4: Thinking Medicare Covers Everything

Medicare helps with many healthcare costs, but it does not mean every cost disappears.

Original Medicare includes Part A and Part B. Part A generally helps with hospital coverage. Part B helps with medical services like doctor visits, outpatient care, and preventive services.

But there are still deductibles, coinsurance, premiums, and services that may not be fully covered.

For example, in 2026, the standard Medicare Part B monthly premium is $202.90, and the annual Part B deductible is $283.

That is why many people look at additional options such as:

Medicare Advantage
Medicare Supplement insurance, also called Medigap
Medicare Part D prescription drug coverage
Dental, vision, or other supplemental coverage

The right setup depends on your doctors, prescriptions, travel habits, budget, and comfort with out-of-pocket costs.

Mistake #5: Confusing Medicare Advantage and Medicare Supplement

This is one of the most common areas of confusion.

Medicare Advantage and Medicare Supplement are not the same thing.

A Medicare Advantage plan is another way to receive your Medicare coverage through a private insurance company approved by Medicare. These plans often have networks, copays, and may include extra benefits or prescription drug coverage.

A Medicare Supplement plan, also called Medigap, works with Original Medicare. It helps pay certain out-of-pocket costs left behind by Part A and Part B.

But here is the key detail:

You cannot have both a Medicare Advantage plan and a Medigap policy at the same time. Medicare explains that Medigap is different from Medicare Advantage, and when you are getting started with Medicare, you can choose one path or the other.

That is why comparing plans is not just about asking:

“Which one is cheaper?”

A better question is:

“Which structure fits the way I actually use healthcare?”

Mistake #6: Ignoring Prescription Drug Coverage

Prescription drug coverage is easy to overlook, especially if you currently take few or no medications.

But it still matters.

If you choose Original Medicare and want drug coverage, you usually need a separate Part D prescription drug plan. If you choose a Medicare Advantage plan, many plans include Part D coverage, but the details can vary.

Drug plans can differ based on:

Which medications are covered
Which pharmacies are preferred
What tier your prescriptions fall under
Monthly premiums
Deductibles and copays

This is why it is smart to review your medications before choosing a plan.

Even one prescription can make a big difference in which plan makes sense.

Mistake #7: Missing the Medigap Timing Window

If you are considering a Medicare Supplement plan, timing matters.

Federal Medicare rules give you a six-month Medigap Open Enrollment Period. It starts the first month you have Medicare Part B and are 65 or older. During that time, you can buy any Medigap policy sold in your state, even if you have health problems. After that window, it may be harder or more expensive to get a Medigap policy, depending on your situation.

For California residents, there are also state-specific rules that may help people who already have Medigap coverage switch plans later. California’s Department of Insurance explains that people with Medicare Supplement coverage have a 60-day open enrollment period beginning with their birthday to transfer to an equal or lesser plan.

But those rules can be specific.

That is why it is better to understand your options before you need them.

Mistake #8: Forgetting About Employer Coverage and HSAs

If you are still working at 65, your Medicare decision may depend on the size of your employer, whether your coverage is based on current employment, and whether your spouse is covered.

This is not something to guess about.

Medicare advises people working past 65 to ask whether their coverage is employer group health plan coverage. Retiree coverage and COBRA do not always work the same way as active employer coverage.

And if you have a Health Savings Account, be careful.

Once Medicare coverage begins, you can no longer contribute to an HSA. Medicare also notes that people with an HSA may need to stop contributions before retiring or applying for benefits to avoid tax penalties.

This is one of those details that can easily get missed until it creates a problem.

So, What Should You Do Before Turning 65?

If your 65th birthday is coming up, do not wait until the last minute.

Start by asking:

Am I already receiving Social Security benefits?
Will I be automatically enrolled, or do I need to sign up?
Am I still working or covered by a spouse’s employer plan?
Do I need Part A, Part B, Part D, Medicare Advantage, or a Supplement plan?
Are my doctors and prescriptions covered?
How much risk am I comfortable taking with out-of-pocket costs?
Do I travel often or split time between different locations?
Do I have an HSA that could be affected?

These questions matter because Medicare is not one-size-fits-all.

The best plan for your neighbor may not be the best plan for you.

Final Thought



Turning 65 should not feel like stepping into a maze.

But Medicare can become confusing quickly when you are trying to compare enrollment windows, plan types, premiums, prescription coverage, penalties, and provider networks all at once.

The good news is that you do not have to figure it out alone.

At Charise Karjala Health Markets, we help people in Palm Desert, Palm Springs, La Quinta, Yucca Valley, and surrounding areas understand their Medicare options with more clarity and less stress.

No pressure.

No confusing jargon.

Just a clear conversation about what fits your needs, your budget, and your life.

If you are turning 65 soon, now is the time to review your options and make sure you are not missing an important step.

Call Charise Karjala Health Markets  to schedule a Medicare planning conversation.