Your Free Guide to Medicare at Age 65

Understanding Medicare at Age 65: The Basics

Medicare is a federal health insurance program run by the Centers for Medicare & Medicaid Services (CMS) that primarily covers people who are 65 and older. When you turn 65, you become able to join Medicare regardless of your health status or income level. This guide provides information about how Medicare works, what it covers, and what you should know before you turn 65.

The program started in 1965 and now covers more than 67 million people. Medicare has four main parts, each covering different types of care. Part A covers hospital stays, skilled nursing facilities, and some home health care. Part B covers doctor visits, outpatient care, and medical equipment. Part D covers prescription drugs. Part C, also called Medicare Advantage, is an alternative way to receive your Part A and B coverage through a private insurance company.

Many people think Medicare covers all health care costs, but it does not. Medicare typically pays about 80% of covered services after you meet your deductible. This means you are responsible for the remaining 20%, plus any costs for services Medicare does not cover. Understanding these limits helps you plan ahead financially.

Your age 65 is not automatic enrollment day. You have a specific window of time to make decisions about your Medicare coverage. Missing this window can result in penalties that increase your costs permanently. This is why understanding the timeline matters, even if you plan to delay Medicare for other reasons.

Practical Takeaway: Write down your 65th birthday and mark the months before it on your calendar. You will need to make Medicare decisions during a specific time period around this date. Start gathering information about 3 months before you turn 65.

The Four Parts of Medicare Explained

Medicare Part A covers inpatient hospital care, including room, meals, nursing care, and tests while you are admitted to a hospital. It also covers skilled nursing facility care after a hospital stay of at least 3 days, home health services ordered by your doctor, and hospice care for people with terminal illnesses. In 2024, Part A has a deductible of $1,632 per benefit period for hospital stays. After you pay this amount, Medicare covers all reasonable charges for the first 60 days in the hospital. From days 61-90, you pay a daily coinsurance amount of $408 per day.

Medicare Part B is medical insurance that covers doctor visits, preventive care, outpatient surgery, and durable medical equipment like wheelchairs and oxygen. Part B also covers some therapy services like physical therapy and occupational therapy ordered by your doctor. The standard Part B premium in 2024 is $164.90 per month, though this amount changes yearly. Part B has a $240 annual deductible, after which Medicare typically pays 80% of the cost of covered services, and you pay the remaining 20%.

Medicare Part D covers prescription drugs through private insurance plans that contract with Medicare. There are many different Part D plans available, and each one has a different list of covered drugs, called a formulary. The costs vary significantly between plans. In 2024, plans typically have a deductible ranging from $0 to $545, and you pay copayments or coinsurance for each drug you fill. Part D has a coverage gap, often called the "donut hole," where you pay more out of pocket after you and your plan reach a certain spending amount.

Medicare Part C, also called Medicare Advantage, is an alternative to Original Medicare (Parts A and B). With Part C, a private insurance company contracts with Medicare to provide all your Part A and B coverage. Many Part C plans also include Part D drug coverage and may offer dental, vision, or hearing coverage as well. These plans often have $0 monthly premiums, but they may have higher copayments and stricter rules about which doctors you can see.

Practical Takeaway: Create a simple chart listing what each part covers. For example: Part A = hospital, Part B = doctor, Part C = alternative to A&B, Part D = drugs. Keep this chart handy when comparing your options. Visit Medicare.gov to see the current costs, as they change every January.

Enrollment Periods: Timing Matters

Your Initial Enrollment Period (IEP) is a 7-month window centered on the month you turn 65. It includes the 3 months before, the month of, and the 3 months after your birthday. This is your chance to sign up for Medicare without waiting or penalties, assuming you have not worked past age 65 with employer coverage. For example, if you turn 65 in June, your IEP runs from March through September. During this window, you can join Part A, Part B, Part D, or a Part C plan.

If you delay joining Medicare outside of your IEP without qualifying for an exception, you will face late enrollment penalties. The Part B penalty is 10% of the monthly premium for each 12 months you delayed enrolling, and this penalty is permanent. So if you delay Part B for 3 years, you pay 30% extra on your Part B premium for as long as you have Medicare. Part D penalties work similarly. These penalties add up significantly over time.

There is an important exception: if you or your spouse are still working at age 65 and you have employer health insurance through that job, you may be able to delay Medicare without penalties. This is called having "creditable coverage." You can delay enrolling in Part B and Part D without penalties, but you should still enroll in Part A at 65 because it is generally free and has no penalty for delaying. When you leave the job or lose the employer coverage, you get an 8-month Special Enrollment Period to join Part B and Part D without penalties.

If you miss your IEP and do not qualify for an exception, the next chance to enroll is during the General Enrollment Period, which runs from January 1 to March 31 each year. However, coverage does not start until July 1 of that year, and you will face those late enrollment penalties mentioned above. This is why your IEP is so important—it is your best opportunity to sign up on your own terms.

Practical Takeaway: Write down the exact dates of your IEP (3 months before through 3 months after your birthday). Set phone reminders for the first day of your IEP to start your research. If you have employer coverage, contact your employer's benefits office to confirm whether you can delay without penalties.

What Medicare Covers and What It Does Not

Medicare Part A and Part B cover many common health care services, but there are significant gaps. Part A covers hospital stays, but only after you meet the deductible and for a limited number of days. Part B covers doctor visits, but only at 80% after your deductible, meaning you pay the other 20%. Neither Part A nor Part B covers dental care, vision exams, eyeglasses, hearing aids, or most routine hearing exams. This is important because as people age, these services become more common and more expensive.

Medicare also does not cover long-term care in nursing homes or assisted living facilities, also called custodial care. If you need help with bathing, dressing, or eating due to a chronic condition, Medicare does not pay for that. Skilled nursing facility care is covered for a limited time after a hospital stay, but once that period ends, you are responsible for the full cost. Many people assume Medicare covers this and are shocked to learn otherwise. Long-term care costs can exceed $4,500 per month, and without coverage, these costs come entirely from your savings.

Some services are covered but have strict limits. For example, Part B covers up to 60 visits per year for physical therapy and occupational therapy combined, though your doctor can request more. Mental health services are covered at the same 80/20 rate as other Part B services, but many beneficiaries find there are not enough mental health providers accepting Medicare in their area. Preventive services like annual wellness visits, cancer screenings, and vaccinations are covered at 100% with no deductible, which is a major benefit of having Medicare.

Original Medicare (Parts A and B) does not cover routine dental, vision, or hearing services. However, many Medicare Advantage plans (Part C) do offer some coverage for these services. Some plans offer $0 copayments for an annual dental cleaning or eye exam, or a small allowance toward hearing aids. Prescription drug coverage is not automatic—you must join