What it is
Medicare is made up of several parts, and each one is named with a letter. Part A is generally associated with hospital-related care, such as inpatient stays, some skilled nursing facility care and hospice. Part B is generally associated with outpatient medical services, such as doctor visits, preventive care and certain supplies.
Part D generally relates to prescription drug coverage. Part C, often called Medicare Advantage, is a different way of receiving your benefits: private insurance companies approved by Medicare offer plans that bundle Parts A and B, and often include drug coverage and extras.
Medigap, also called Medicare Supplement insurance, is not a numbered part of Medicare. It is sold by private companies and is designed to help with some of the costs Original Medicare (Parts A and B) does not pay. Which parts and add-ons make sense depends on the person, and details change every year.
How it’s traditionally been approached
Many people begin with Original Medicare, which is Parts A and B, and then decide whether to add a stand-alone Part D drug plan and a Medigap policy. This approach generally allows people to see providers who accept Medicare, with the supplement helping to fill some cost gaps.
Others choose a Medicare Advantage plan instead. These plans typically bundle hospital, medical and often drug coverage into one plan, and may offer extra benefits. They commonly work with provider networks and have their own cost structures and rules.
Neither path is right for everyone. Each has real trade-offs involving flexibility, provider choice, predictability of costs, convenience and extra benefits. People often weigh their health needs, budget, preferred doctors, prescriptions and where they live or travel.
How the right agent may help
An independent agent who focuses on Medicare may help you understand how the parts fit together and what your options generally look like in your area. A conversation is usually educational: the agent may ask about your doctors, medications, budget and preferences, and then explain how different kinds of plans may line up with those things.
Helpful questions to bring include: Are my doctors and pharmacies included? How are my prescriptions typically handled? What are the trade-offs between Medicare Advantage and Original Medicare with a Medigap plan? What costs might I still be responsible for? What happens if my needs change?
An agent may also explain general timing rules and what changes from year to year, but you should confirm current numbers, deadlines and details at Medicare.gov or by calling 1-800-MEDIGAP. An agent may help you compare options, but no outcome is promised, and the decision remains yours.
The bigger picture
Choosing Medicare coverage is about more than paperwork. It touches your health, your finances and your peace of mind. Feeling unsure about the parts can cause stress, and many people find that learning the basics at an unhurried pace helps them feel more confident.
Taking time to understand your options, asking questions and involving trusted family members may support a sense of control. If you are looking for broader wellness resources, Providers.plus may be one place to explore. Whatever approach you choose, it can be a reasonable one when it fits your own situation.
Keep in mind
- Medicare News is an independent directory, not a government website, and not a professional advisor.
- Costs, coverage details and deadlines change every year, so check Medicare.gov or call 1-800-MEDIGAP for current information.
- Original Medicare with Medigap and Medicare Advantage each have real advantages and drawbacks; neither is best for everyone.
- This page is educational only and is not medical, legal, tax or financial advice.
Not sure where to start? Answer a few gentle questions and choose who you’d like to hear from.
Call 1-800-MEDIGAP →Frequently asked questions
What are the four parts of Medicare?
The four parts commonly discussed are A, B, C and D. Part A generally covers hospital-related care, Part B generally covers outpatient medical services, Part C (Medicare Advantage) is a private-plan alternative that bundles benefits, and Part D generally covers prescription drugs.
What is the difference between Part A and Part B?
Part A generally relates to inpatient hospital care, some skilled nursing facility care and hospice, while Part B generally relates to outpatient care such as doctor visits and preventive services. Together they are known as Original Medicare. Specific coverage rules and costs vary, so check Medicare.gov for current details.
What is Medicare Part C?
Part C is another name for Medicare Advantage, a way to receive your Medicare benefits through a private insurance company approved by Medicare. These plans generally include what Parts A and B cover and often add drug coverage and extra benefits. They typically use networks and have their own rules and costs.
Is Medigap one of the Medicare parts?
No, Medigap is not a lettered part of Medicare. It is a supplement sold by private insurers that may help pay some costs Original Medicare does not cover. It generally works with Original Medicare rather than with Medicare Advantage.
Do I need all the Medicare parts?
Not necessarily. Many people have Parts A and B and then choose between adding Part D and possibly Medigap, or enrolling in a Medicare Advantage plan. The right mix depends on your health needs, budget, doctors and prescriptions.
Can an agent help me understand Medicare parts explained in simple terms?
Yes, an independent agent may help explain the parts and how plan options compare for your situation. They can walk through your doctors, medications and preferences, though results are never guaranteed. For current figures, you can also call 1-800-MEDIGAP or visit Medicare.gov.
Educational resource. Medicare News shares general information and connects people with independent agents. It is not professional advice. Talk with a qualified professional about your own situation.