Medicare Part C or Medicare Advantage is only one of the Medicare supplement programs that the government has imposed to better care for the needs of its recipients.
While Part A covers in-patient hospitalization and Part B covers outpatient care.
Medicare Part C, on the other hand, combines all the benefits of Medicare Part A & Part B through private insurance carriers under managed healthcare programs like HMO, PPO, or Private Fee For Service (PFFS) plans.
Medicare Advantage plans also incorporate part of Medicare Part D by offering prescription drug coverage, although it may not be as extensive and may vary across different types of managed healthcare plans.
Medicare recipients can count on having a Medicare Advantage plan for little or no premiums at all.
Here is a rundown of the difference between the Medicare Advantage plans available in the market today.
They form just part of the medicare supplement insurance plans: PPO Plans

• Prescription drugs are already covered by the premiums.
  
• You don't have to choose a primary care doctor.
  
• You can go to your preferred doctor or hospital at a higher cost.
  
• You do not need to be referred by your primary doctor to see a specialist

HMO Plans

• The premium already covers prescription drugs
• In most cases, you have to choose a primary care doctor
• Your health can only be managed by the physicians in your HMO's network
• You need to be referred by your primary physician in order to see a specialist

PFFS Plans

• In most cases you need to enroll in a Medicare Prescription Drug Plan to be covered for prescription drugs
• You do not need to choose a primary care doctor
• You can go to doctor or hospital accredited by Medicare and that accepts the PFFS plans
• You don't need to be referred by your doctor to consult with a specialist