Learn About Medicare Plans for Seniors

Understanding Medicare: The Basics for People 65 and Older

Medicare is a federal health insurance program run by the Centers for Medicare & Medicaid Services (CMS). It primarily serves people age 65 and older, though some younger people with disabilities or specific medical conditions may also receive coverage. According to CMS data, approximately 66 million people were enrolled in Medicare as of 2023, making it one of the largest insurance programs in the United States.

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The program is divided into different parts, each covering different aspects of health care. Original Medicare consists of Part A and Part B. Part A covers inpatient hospital stays, skilled nursing facility care, hospice care, and some home health services. Part B covers physician services, outpatient hospital care, medical equipment, and other services. Many people think of Medicare as a single insurance card, but it actually represents a combination of coverage options that work together to help pay for medical expenses.

It is important to understand that Medicare is not the same as Medicaid. Medicaid is a separate program designed to help people with limited income and resources pay for medical costs. While Medicare is available to most people 65 and older regardless of income, Medicaid focuses on low-income individuals and families of any age. Some people may have both programs, called "dual eligible" status, but they serve different purposes.

Medicare does not cover all medical expenses. Beneficiaries typically pay premiums, deductibles, and coinsurance amounts. The program generally does not cover dental work, vision care, hearing aids, long-term custodial care, or routine foot care. Understanding what Medicare does and does not cover helps people plan for their overall health care costs in retirement.

Practical takeaway: Start by understanding that Medicare is divided into parts (A, B, C, and D), each covering different services. Knowing this structure helps explain why people often need multiple pieces of coverage to address all their health care needs.

Original Medicare: Parts A and B Explained

Original Medicare, also called "Traditional Medicare," consists of Part A and Part B. Part A is hospital insurance that helps pay for inpatient hospital care, including the cost of a hospital room, meals, nursing care, and other hospital services. If someone needs extended care after a hospital stay, Part A also covers skilled nursing facility care for up to 100 days. Part A covers hospice care for people with terminal illnesses and some home health services when ordered by a doctor.

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Part B is medical insurance that covers doctor visits, outpatient care, and medical equipment. This includes preventive services such as annual wellness visits, cancer screenings, and vaccines. Part B covers services like physical therapy, mental health counseling, and emergency room visits. Many preventive services are covered at no cost beyond the monthly premium, with no deductible or coinsurance required. This reflects an emphasis on prevention within the Medicare program.

Both Part A and Part B involve out-of-pocket costs. Part A has a deductible that applies to inpatient hospital stays. In 2024, this deductible is $1,632 per benefit period. After the deductible is met, beneficiaries pay coinsurance amounts for extended stays. Part B has an annual deductible (currently $240 in 2024) and beneficiaries typically pay 20% coinsurance for most services after meeting the deductible. These costs can add up, which is why many people choose additional coverage options.

Original Medicare is accepted by doctors and hospitals nationwide. People with Original Medicare can see any doctor, specialist, or hospital that accepts Medicare. This flexibility appeals to many beneficiaries who want freedom in choosing their health care providers. However, this comes with the responsibility to manage claims and understand what is covered, since there is no gatekeeper or managed care coordinator involved.

Practical takeaway: Original Medicare Part A covers hospital care while Part B covers doctor visits and outpatient services. Both involve deductibles and coinsurance, so knowing your out-of-pocket costs helps with financial planning.

Medicare Advantage Plans: Part C Coverage Options

Medicare Advantage Plans, also called Part C, are an alternative way to receive Medicare benefits. Instead of using Original Medicare (Parts A and B), people may choose to enroll in a Medicare Advantage Plan offered by a private insurance company that contracts with Medicare. These plans must cover at least the same services as Original Medicare, but they often provide additional benefits such as prescription drug coverage, dental care, vision care, hearing aids, and fitness programs. According to CMS, approximately 28 million people were enrolled in Medicare Advantage Plans as of 2023, representing about 42% of all Medicare beneficiaries.

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Medicare Advantage Plans typically operate as Health Maintenance Organizations (HMOs) or Preferred Provider Organizations (PPOs). HMO plans generally require members to use doctors and hospitals within the plan's network and to obtain referrals from a primary care doctor before seeing specialists. PPO plans offer more flexibility, allowing members to see out-of-network providers, though usually at a higher cost. Some plans also function as Point of Service (POS) plans, which combine HMO and PPO features. Understanding the plan type matters because it affects how you access care and what you pay.

One significant difference between Medicare Advantage and Original Medicare is the out-of-pocket cost structure. Medicare Advantage Plans have an annual out-of-pocket maximum, which means once you have paid a certain amount in deductibles and coinsurance, the plan covers 100% of covered services for the rest of the year. In 2024, the out-of-pocket maximum cannot exceed $8,050 for in-network services. This provides a financial cap that does not exist in Original Medicare, where costs can continue indefinitely if someone requires extensive care.

Medicare Advantage Plans must include prescription drug coverage as Part D, so people do not need to purchase a separate drug plan. Many plans also include dental, vision, and hearing benefits that Original Medicare does not provide. However, the trade-off is typically less freedom in choosing providers and the requirement to use in-network doctors and hospitals. Plans may require prior authorization for certain procedures or limit the number of specialist visits allowed.

Practical takeaway: Medicare Advantage Plans bundle hospital, doctor, prescription drug, and often dental and vision coverage into one plan with a yearly out-of-pocket limit. This appeals to people who want comprehensive coverage in one package, but requires using in-network providers.

Prescription Drug Coverage: Understanding Part D

Medicare Part D provides prescription drug coverage. This coverage is available through standalone Prescription Drug Plans (PDPs) for people with Original Medicare or is included in Medicare Advantage Plans. As of 2023, CMS data shows that approximately 48 million beneficiaries had some form of prescription drug coverage through Medicare. Prescription medications can be a significant expense in retirement, making this coverage important for many people.

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Part D plans vary in which drugs they cover, known as the formulary. Each plan creates a list of covered drugs organized into categories called tiers. Different tiers have different costs—a Tier 1 drug (usually generic medications) might cost $10, while a Tier 4 drug (often brand-name medications) might cost $75 or more. Plans may require step therapy, meaning a person must try a cheaper alternative first before the plan will cover a more expensive medication. Understanding your specific plan's formulary is important because coverage can vary significantly between plans.

Part D includes a deductible (up to $545 in 2024), a coverage gap sometimes called the "donut hole," and catastrophic coverage. After paying the deductible, beneficiaries pay their normal coinsurance or copayment amounts. Once total drug spending reaches a certain threshold, beneficiaries enter the coverage gap where they pay a higher percentage of drug costs. After spending enough in the coverage gap, catastrophic coverage begins and beneficiaries pay only a small coinsurance percentage for covered drugs for the rest of the year.

It is important to note that not all medications are covered by Medicare Part D. Certain categories such as over-the-counter medications, vitamins, and some specialty drugs may not be included. Additionally, coverage can change from year to year as plans modify their formularies and drug tiers. This means a medication that was covered at a favorable tier one year might move to a higher tier the next year, potentially increasing what a person pays out of pocket.

Practical takeaway: Part D covers prescription drugs but includes deductibles, tiers with different costs, and coverage gaps. Checking your specific plan's drug formulary before