Medicare beneficiaries who are considering their coverage options need to understand the specific dollar amounts they may pay throughout the year. The costs associated with Medicare vary significantly depending on which type of plan you choose, and knowing these numbers helps you make informed comparisons between different coverage structures.
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For Original Medicare (Part A and Part B) in 2025, the Part B monthly premium is $174.70 for most beneficiaries, though higher-income individuals pay between $244.10 and $560.50 per month depending on their income level. This income-related adjustment means that if your modified adjusted gross income exceeds certain thresholds, your premium increases. For 2025, if your income was above $103,000 (single) or $206,000 (married filing jointly) in 2023, you would pay more.
The Part A deductible for hospital stays in 2025 is $1,676 per benefit period. A benefit period begins when you enter a hospital and ends after you have not received hospital care for 60 consecutive days. If you need another hospital stay after that 60-day period, you pay another deductible. For skilled nursing facility care, you pay $0 for days 1–20 and $209.50 per day for days 21–100 in 2025. After 100 days, you pay all costs.
Part B covers doctor visits and outpatient care, and you typically pay 20 percent of the Medicare-approved amount after meeting your annual deductible of $240 in 2025. This means if your doctor's visit is approved at $150 by Medicare, you would pay $30 (20 percent) after your deductible is met. Some preventive services have no cost-sharing.
Medicare Advantage plans (Part C) typically have lower or zero premiums but include out-of-pocket maximums. In 2025, the out-of-pocket maximum cannot exceed $7,050 for in-network care. Once you reach this limit, Medicare Advantage plans pay 100 percent of in-network covered services for the rest of the year. These plans usually have copayments for office visits ($0–$75), urgent care ($0–$100), and emergency room visits ($0–$300).
Part D prescription drug coverage involves different payment stages. In 2025, you pay the full cost of medications until you reach your deductible (as low as $0 or as high as $590). After that, you typically pay 25 percent of costs in the initial coverage period until your out-of-pocket spending reaches $5,850. Then you enter the coverage gap (sometimes called the "donut hole"), where you pay 25 percent of brand-name drug costs and about 25 percent of generic drug costs. Once your total out-of-pocket spending reaches $8,550, you pay 5 percent of costs for the rest of the year.
Practical Takeaway: Write down the specific costs that matter most to you—your likely Part B premium based on your income, the Part A deductible if you expect hospitalization, your usual number of doctor visits, and any regular medications. Add these together to estimate your total potential costs under Original Medicare. Then compare this total to the premiums and out-of-pocket maximums of Medicare Advantage and supplemental plans available in your area.
Medigap policies, also called Medicare supplement insurance, are sold by private insurance companies to help pay costs that Original Medicare does not cover. Understanding which gaps in Original Medicare affect your personal healthcare situation helps you decide whether paying for a supplement plan makes financial sense for you.
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Original Medicare leaves several significant costs uncovered. The Part A hospital deductible ($1,676 in 2025) must be paid entirely out-of-pocket under Original Medicare alone. The Part B coinsurance of 20 percent for doctor visits and outpatient services can add up quickly if you see doctors frequently or need ongoing treatment. Skilled nursing facility coinsurance ($209.50 per day for days 21–100 in 2025) applies if you need rehabilitation care. Blood transfusions, foreign travel emergency care, and excess doctor charges are also not covered by Original Medicare.
The 10 standardized Medigap plans (labeled A through N) offer different combinations of gap coverage. Plan A covers the Part A deductible, Part B coinsurance, and some additional services. Plan C (available only to those who enrolled in Medicare before 2020) covers the Part A deductible, Part B deductible, Part B excess charges, and coinsurance costs. Plan G is currently the most popular choice for new beneficiaries because it covers almost everything except the Part B deductible ($240 in 2025), plus it covers excess doctor charges (charges above what Medicare approves).
The financial case for a Medigap plan depends on your expected healthcare use and regional premium costs. If you choose Plan G with a monthly premium of $150, that is $1,800 annually. If you then incur $3,000 in doctor visits requiring coinsurance, you would pay $600 (20 percent) out-of-pocket under Original Medicare, or just the $240 Part B deductible under Plan G. In this scenario, your total cost under Original Medicare is $600, and your total cost under Plan G is $1,800 plus $240, which equals $2,040. The supplement costs more in this situation.
However, if you require $10,000 in covered doctor services and procedures, your Original Medicare coinsurance would be $2,000, plus the $1,676 Part A deductible if hospitalized, totaling $3,676. With Plan G at $1,800 per year plus the $240 Part B deductible, your total would be $2,040. In a year with significant healthcare needs, the supplement saves you substantial money.
Plan N is less expensive than Plan G (often $30–$50 less per month) but requires you to pay a small copayment for doctor visits (typically $20 per visit) and the Part B deductible. Plan N works well if you rarely see doctors but want protection against catastrophic costs. Plans A and B are the most affordable but cover fewer costs. Plans D, H, I, and J are no longer sold to new beneficiaries.
Some beneficiaries choose not to buy Medigap coverage because their healthcare use is minimal. If you rarely see doctors, have no chronic conditions, and take no medications, Original Medicare alone may be most economical. However, supplement plans provide predictability—you know your maximum costs upfront, whereas Original Medicare leaves you exposed to whatever coinsurance percentages apply.
Practical Takeaway: List your anticipated healthcare needs for the coming year: How many doctor visits do you expect? Do you have any planned procedures? Are you managing chronic conditions? Then get quotes for Plan G and Plan N in your area. Add the annual premium to your expected out-of-pocket coinsurance under Original Medicare, and compare that total to your expected costs under each supplement plan. The lowest premium is not always the best value if you have higher healthcare needs.
Medicare has multiple enrollment periods each year, and the timing matters significantly because missing these windows can result in permanent premium increases called late enrollment penalties. These penalties last for as long as you have Medicare, making it essential to understand when you can and cannot change your coverage.
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The Initial Enrollment Period (IEP) is a seven-month window that begins three months before the month you turn 65 and continues for three months after the month you turn 65. For example, if you turn 65 in June, your IEP runs from March through September. During this period, you can enroll in Medicare Part B and Part D prescription drug coverage without penalty. If you delay enrolling in Part B beyond this window and you do not have qualifying health coverage through an employer, you will pay a 10 percent penalty on your Part B premium for as long as you have Medicare. If you delay enrolling in Part D beyond this window, you pay a 1 percent penalty per month of delay on your Part D premium for as long as you have prescription drug coverage through Medicare.
The Annual Enrollment Period (AEP), also called the fall enrollment season, runs from October 15 through December 7 each year. During this time,
This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.