What Is the Difference Between Medicare Parts A, B, C, and D?

August 31, 2026

What Is the Difference Between Medicare Parts A, B, C, and D?

Doctor speaking with two seated patients in a hospital hallway

If you're approaching age 65 or preparing to enroll in Medicare, you've probably heard terms like Part A, Part B, Part C, and Part D. For many people, these different parts can seem confusing at first.


One of the most common questions I hear from Florida residents is:

"What do all the different parts of Medicare actually cover?"

Understanding Medicare's structure is one of the most important steps in choosing the right healthcare coverage. Each part serves a different purpose, and knowing how they work together can help you avoid costly mistakes and coverage gaps.


As a licensed Medicare broker serving Jacksonville and communities throughout Florida, I help individuals understand their Medicare options every day. In this guide, we'll break down Medicare Parts A, B, C, and D in simple terms so you can make informed decisions about your healthcare coverage.


Understanding the Basics of Medicare

Medicare is a federal health insurance program primarily designed for:

  • Individuals age 65 and older
  • Certain younger individuals with disabilities
  • People with qualifying medical conditions


Medicare is divided into different parts because each part covers specific healthcare services.


The four main parts are:

  • Medicare Part A
  • Medicare Part B
  • Medicare Part C
  • Medicare Part D


Let's look at each one individually.


What Is Medicare Part A?

Medicare Part A is commonly known as Hospital Insurance.

Part A primarily helps pay for inpatient healthcare services.


Medicare Part A Covers:

  • Inpatient hospital stays
  • Skilled nursing facility care
  • Hospice care
  • Certain home healthcare services


Hospital Coverage

If you're admitted to a hospital as an inpatient, Medicare Part A generally helps cover:

  • Room and board
  • Nursing care
  • Medications received during your stay
  • Hospital services and supplies


Skilled Nursing Facility Coverage

Part A may help cover care received in a skilled nursing facility after a qualifying hospital stay.

Coverage is generally limited and subject to Medicare guidelines.


Hospice Care

Individuals with terminal illnesses may receive hospice benefits through Medicare Part A.

Hospice services often include:

  • Pain management
  • Nursing care
  • Counseling
  • Support services


Is Medicare Part A Free?

Many beneficiaries qualify for premium-free Part A because they or their spouse paid Medicare taxes while working.

However, even premium-free Part A includes deductibles and cost-sharing responsibilities.


What Is Medicare Part B?

Medicare Part B is known as Medical Insurance.

Part B covers many of the healthcare services people use most often.


Medicare Part B Covers:

  • Doctor visits
  • Preventive services
  • Outpatient care
  • Diagnostic testing
  • Lab work
  • Durable medical equipment
  • Physical therapy
  • Ambulance services


Preventive Care

Medicare Part B emphasizes prevention and early detection.


Covered preventive services may include:

  • Annual wellness visits
  • Cancer screenings
  • Diabetes screenings
  • Cardiovascular screenings
  • Vaccinations


Specialist Care

Part B also helps cover visits to:

  • Cardiologists
  • Dermatologists
  • Orthopedic specialists
  • Neurologists
  • Other medical specialists


Durable Medical Equipment

Examples include:

  • Walkers
  • Wheelchairs
  • Oxygen equipment
  • Hospital beds


Does Part B Have a Premium?

Yes.

Most beneficiaries pay a monthly Part B premium.


Part B also includes:

  • Annual deductibles
  • Coinsurance
  • Copays in some situations


Without additional coverage, beneficiaries are generally responsible for 20% of Medicare-approved costs after the deductible is met.


What Is Medicare Part C?

Medicare Part C is better known as Medicare Advantage.

These plans are offered by private insurance companies approved by Medicare.

Medicare Advantage plans provide an alternative way to receive your Medicare benefits.


Instead of receiving benefits directly through Original Medicare, you receive them through a private insurance carrier.


Medicare Advantage Plans Include:

  • Part A coverage
  • Part B coverage


Most plans also include:

  • Part D prescription drug coverage
  • Dental benefits
  • Vision benefits
  • Hearing benefits
  • Fitness memberships
  • Telehealth services


Types of Medicare Advantage Plans

Common plan types include:


HMO Plans

Health Maintenance Organization plans typically require:

  • Network providers
  • Primary care physician coordination
  • Referrals for specialists


PPO Plans

Preferred Provider Organization plans generally offer:

  • More provider flexibility
  • Out-of-network options
  • No referral requirements in many cases


Why Medicare Advantage Is Popular

Many Florida beneficiaries choose Medicare Advantage because:

  • Some plans have $0 monthly premiums
  • Additional benefits are included
  • Out-of-pocket maximums help limit annual expenses


However, provider networks and plan benefits vary significantly.


What Is Medicare Part D?

Medicare Part D provides prescription drug coverage.

Part D is offered through private insurance companies approved by Medicare.


Part D Helps Cover:

  • Generic medications
  • Brand-name medications
  • Specialty drugs


Why Part D Matters

Prescription costs can add up quickly.

Without Part D coverage, beneficiaries may face substantial out-of-pocket expenses.


Part D Plan Features

Plans typically include:

  • Monthly premiums
  • Drug formularies
  • Deductibles
  • Copays
  • Coinsurance


Every plan maintains its own list of covered medications.

This is why comparing plans carefully is important.


Formularies Matter

A formulary is a list of medications covered by the plan.

Before enrolling, always verify:

  • Your medications are covered
  • Your preferred pharmacy participates
  • Costs are reasonable


How the Different Parts Work Together

Understanding how Medicare parts fit together helps simplify decision-making.


Option 1: Original Medicare

Many beneficiaries choose:

  • Part A
  • Part B

Then add:

  • Part D
  • Medicare Supplement Insurance (Medigap)


This combination provides broad provider access and helps reduce out-of-pocket costs.


Option 2: Medicare Advantage

Others choose:

  • Medicare Advantage (Part C)

Which typically includes:

  • Part A
  • Part B
  • Part D


Plus additional benefits.

This creates a more bundled healthcare experience.


Which Medicare Option Is Right for You?

The answer depends on your personal situation.


Original Medicare May Be Better If:

You want:

  • Maximum provider flexibility
  • Nationwide provider access
  • Predictable healthcare costs


Medicare Advantage May Be Better If:

You prefer:

  • Lower monthly premiums
  • Built-in prescription coverage
  • Dental, vision, and hearing benefits
  • One convenient plan


Both options have advantages.

The key is choosing the coverage that best aligns with your healthcare needs and budget.


Common Medicare Misunderstandings

"Medicare Covers Everything"

It doesn't.


Original Medicare generally does not cover:

  • Routine dental care
  • Most vision care
  • Hearing aids
  • Long-term custodial care


"Part A Is All I Need"

Part A only covers hospital-related services.

Most beneficiaries also need Part B coverage.


"All Medicare Advantage Plans Are the Same"

Benefits, provider networks, and costs vary significantly.

Comparing plans carefully is essential.


"I Don't Need Prescription Drug Coverage"

Even if you take few medications today, Part D helps protect against future prescription expenses and potential late enrollment penalties.


Real Florida Example

A Jacksonville resident recently contacted me after becoming eligible for Medicare.

He assumed enrolling in Part A was enough because he rarely visited the doctor.


After reviewing his situation, we discovered he needed:

  • Part B coverage for outpatient services
  • Prescription drug coverage
  • Additional protection against unexpected medical expenses


By understanding how Medicare Parts A, B, C, and D work together, he was able to select coverage that better matched his healthcare needs.


Why Work With Derek Rogers?

Medicare can be confusing, especially when you're trying to understand multiple parts and coverage options.


As an independent Medicare broker, I help Florida residents:

  • Understand Medicare eligibility
  • Compare Medicare Advantage plans
  • Evaluate Medicare Supplement options
  • Review prescription drug coverage
  • Avoid costly enrollment mistakes


My goal is to simplify Medicare and help you make informed decisions with confidence.

My services are provided at no cost to you.


Frequently Asked Questions

Do I need all four parts of Medicare?

Not necessarily. The right combination depends on your healthcare needs and coverage goals.


Is Medicare Advantage the same as Medicare?

Medicare Advantage is an alternative way to receive your Medicare benefits through a private insurance company.


Do Medicare Advantage plans include prescription coverage?

Most Medicare Advantage plans include Part D prescription drug coverage.


Can I have Medicare Advantage and a Medicare Supplement plan?

No. You generally cannot have both at the same time.


Contact Derek Rogers Today

HealthMarkets Insurance – Derek Rogers
10199 Southside Boulevard #100
Jacksonville, FL 32256

Phone: (904) 536-8054
Email: derek.rogers@healthmarkets.com


If you're approaching age 65 or trying to understand your Medicare options, contact me today for a free consultation.

Together, we'll review your coverage options and help you choose a Medicare plan that fits your healthcare needs and budget.


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