NowPatient Blog
What are the costs and coverage of Medicare Part B

What are the costs and coverage of Medicare Part B

Navin Khosla NowPatientGreen tick
Updated on 17 Nov 2023

Medicare Part B is an essential component of the Medicare program, providing coverage for a wide range of medical services and outpatient care. It is important to understand the costs associated with Part B and the coverage it offers so that you can make informed decisions about your healthcare. In this comprehensive guide, we will explore the various aspects of Medicare Part B, including its coverage, costs, eligibility, and supplemental coverage options. Let’s dive in!

What is Medicare Part B?

Medicare Part B is the portion of Medicare that covers most doctor visits and other outpatient medical services, sometimes referred to as medical insurance. It is one of the two main components of Original Medicare, along with Medicare Part A, which covers inpatient hospital care (hospital insurance) and some skilled nursing facility care. Medicare Part B covers a wide range of services, including medically necessary treatments and preventive care.

Coverage of Medicare Part B

Medically necessary services

Part B Medicare covers medically necessary services, which are services or supplies that are needed to diagnose or treat a medical condition and meet accepted standards of medical practice. These services can include outpatient visits to healthcare providers, diagnostic tests, durable medical equipment (DME) such as wheelchairs, ambulance services, mental health services, and more.

To determine if a service is medically necessary, you should consult with your healthcare provider. They can explain why you need a particular service and whether Medicare will cover it. It’s important to note that if your healthcare provider does not accept assignments, they may charge up to 15% above Medicare’s approved amount.

Preventive services

In addition to medically necessary services, Medicare Part B also covers a range of preventive services. These services are designed to prevent illness or detect it at an early stage when treatment is most effective. Preventive services covered by Part B include screenings for various diseases, vaccinations, counseling, and other preventive care measures.

Many preventive services are available at no cost to you if you receive them from a healthcare provider who accepts assignments. It’s important to check with your healthcare provider to ensure that the preventive service you need is covered by Medicare.

Costs of Medicare Part B

While Medicare Part B provides valuable coverage, it is not entirely free. There are costs associated with Part B that you need to be aware of. These costs include premiums, deductibles, and coinsurance or copayments.

Medicare Part B premium

Medicare Part B requires a monthly premium amount, which is the amount you pay for coverage. In 2023, the standard premium for Part B is $164.90 per month. However, if your income exceeds certain thresholds, you may be required to pay a higher premium. Medicare Part B premiums are calculated based on a person’s modified adjusted gross income (MAGI). The amount of the premium can change each year, so it’s important to stay informed about any updates.


In addition to the monthly premium, Medicare Part B has an annual deductible. The deductible is the amount you must pay out-of-pocket before Medicare starts covering your healthcare expenses. For 2023, the Part B deductible is $226. Once you have reached the deductible, Medicare will begin to pay its share of the costs for covered services.

Coinsurance and copayments

After you have paid the deductible, Medicare Part B requires you to pay coinsurance or copayments for certain services. Coinsurance is a percentage of the cost of the service, while copayments are a fixed amount. For most services covered by Part B, you will be responsible for 20% of the Medicare-approved amount after you have met the deductible.

It’s important to note that if your healthcare provider accepts assignment, they have agreed to accept the Medicare-approved amount as full payment for covered services. However, if your provider does not accept assignment, they may charge up to 15% above the Medicare-approved amount.

Medicare Part B eligibility

To be eligible for Medicare Part B, you must meet certain criteria. Most individuals become eligible for Part B when they turn 65 years old. However, you can also qualify for Part B before the age of 65 if you have certain disabilities or end-stage renal disease (ESRD).

If you are already receiving Railroad Retirement Board or Social Security benefits, you will be automatically enrolled in Medicare Part B. If you are not receiving these benefits, you will need to sign up for Part B during your Initial Enrollment Period, which typically begins three months before your 65th birthday and lasts for seven months.

Medicare Part B late enrollment penalty

It is crucial to enroll in Medicare Part B during your Initial Enrollment Period to avoid a late enrollment penalty. If you do not sign up for Part B when you are first eligible and later decide to enroll, you may be subject to a late enrollment penalty.

The late enrollment penalty is an additional cost that is added to your monthly premium. The penalty amount is calculated by adding 10% for each full 12-month period during which you were eligible for Part B but did not enroll. You will continue to pay this penalty for as long as you have Medicare Part B coverage.

There are exceptions to the late enrollment penalty if you qualify for a Special Enrollment Period. This period allows you to delay enrolling in Part B without incurring the penalty if you have health coverage based on current employment. It’s essential to understand the rules and deadlines to avoid any penalties.

Getting help with Medicare Part B costs

If you have limited income and resources, you may be eligible for assistance programs that can help with Medicare Part B costs. These programs can provide financial assistance for premiums, deductibles, coinsurance, and copayments. Some of the programs available include:

  • Medicare Savings Programs: These programs help pay for Medicare premiums and, in some cases, other cost-sharing expenses
  • Extra Help (Low-Income Subsidy): Extra Help provides assistance with prescription drug costs for individuals with limited income and resources
  • State Pharmaceutical Assistance Programs (SPAPs): Some states offer additional assistance with prescription drug costs to eligible Medicare beneficiaries

To determine if you qualify for these programs, you can contact your State Health Insurance Assistance Program (SHIP) or your local Medicaid office. They can provide guidance and help you navigate the application process.

What Medicare Part B does not cover

While Medicare Part B provides extensive coverage, there are certain services and items that it does not cover. It’s important to be aware of these exclusions to avoid unexpected expenses. Some examples of services not covered by Part B include:

  • Long-term care, such as nursing home healthcare
  • Most dental care, including routine check-ups and dentures
  • Routine eye exams and eyeglasses
  • Hearing aids and exams for fitting hearing aids
  • Cosmetic surgery
  • Acupuncture

It’s worth noting that even though these services are not covered by Part B, they may be covered by other types of insurance or through supplemental coverage options such as Medicare Advantage Plans or Medigap policies.

Tips for maximizing your Medicare Part B benefits

To make the most of your Medicare Part B coverage, consider the following tips:

  • Stay informed: Keep up-to-date with changes in Medicare coverage and costs by reviewing official Medicare publications and resources
  • Choose providers who accept assignments: When seeking medical services, choose healthcare providers who accept Medicare assignments to ensure that you are not charged more than the Medicare-approved amount
  • Schedule preventive screenings: Take advantage of the preventive services covered by Medicare Part B to detect potential health issues early and prevent more significant problems
  • Review your coverage annually: Medicare plans and costs can change each year, so it’s important to review your coverage options during the Annual Enrollment Period (October 15 – December 7) to ensure that your healthcare needs are met
  • Explore supplemental coverage options: Consider Medicare Supplement Insurance (Medigap), Medicare Advantage Plans (Part C), or Prescription Drug Coverage (Part D) to enhance your coverage and reduce out-of-pocket costs


Understanding the costs and coverage of Medicare Part B is essential for making informed decisions about your healthcare. By familiarizing yourself with the services covered, the associated costs, and the available supplemental coverage options, you can maximize your Medicare benefits and ensure that you receive the necessary care without facing significant financial burdens. Remember to stay informed, review your coverage annually, and explore additional assistance programs if needed. A more exhaustive list of Medicare Part B coverage can be found on the federal government website Medicare.gov. With the right knowledge and planning, you can make the most of your Medicare Part B coverage and enjoy peace of mind knowing that your healthcare needs are taken care of.


Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information in this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

Faq icon

Video Consultations

Now Patient Data Security

Data Security

Our Commitment to You.

Find out moreNow Patient Data SecurityNow Patient Data Security

What is NowPatient

Telehealth and Online Pharmacy

NowPatient is a licensed online pharmacy and doctor service that is available around the world. Our service is FREE and packed with valuable features that can benefit your health such as medication reminders, educational blogs, medically approved symptoms checker, UK NHS online pharmacyprivate treatment plansRx Advantage cardhealth conditions information, affordable medications options, genetic testinghome test kitshealth riskspollen meterair quality monitor, weight loss plans, drug savings programs and lots more!

Laptop showing nowpatients app dashboard


To improve the lives of everyone by making high-quality care accessible and convenient

We are here to improve lives. Our service gives you access to smart features and resources that can help empower you to take control of your health and improve your health outcomes. All this, in one place, for FREE. We strive to bring a fresh perspective to managing health. NowPatient can be accessed by downloading the App or using your web browser.

Download our app today

A man and woman in a video call on an iphone.

Can I trust NowPatient

Meet our medical team

We are a passionate group of clinicians and medical writers covering a broad range of specialities with experience operating in health systems in the United Kingdom & United States. Providing excellent care and advice is at the heart of everything we do. You can read more about our medical team by visiting the medical team page or learn more about how we curate content by visiting our editorial process

Your Questions Answered

For your peace of mind, we can answer your questions quickly

We have a comprehensive list of FAQ’s on each feature page. Alternatively, for broader questions around our service just click the button below.
Find your answers