Medicare Part C

Medicare Part C - Medicare Advantage

A Medicare Advantage Plan (like an HMO or PPO) is another health coverage choice you may have as part of Medicare. Medicare Advantage Plans, sometimes called “Part C” or “MA Plans,” are offered by private companies approved by Medicare.

If you join a Medicare Advantage Plan, the plan will provide all of your Part A (Hospital Insurance) and Part B (Medical Insurance) coverage. In all plan types, you are always covered for emergency and urgent care. Medicare Advantage Plans must cover all of the services that Original Medicare covers except hospice care. Original Medicare covers hospice care even if you are in a Medicare Advantage Plan. Medicare Advantage Plans aren’t considered supplemental coverage.

Medicare Advantage Plans may offer extra coverage, such as vision, hearing, dental, and/or health and wellness programs. Most include Medicare prescription drug coverage.

In addition to your Part B premium, you usually pay one monthly premium for the services provided.


  • You can generally join a Medicare Advantage Plan if you meet these conditions:
    You have Part A and Part B.
  • You live in the service area of the plan. Contact the plans you're interested in to find out about the service area.
  • You don't have End-Stage Renal Disease (ESRD) (permanent kidney failure requiring dialysis or a kidney transplant). A few exceptions apply for ESRD. For more information call TTY users should call  1-877-486-2048, 24 hours a day/7 days a week or visit WWW.MEDICARE.GOV.
  • If you have ALS (Amyotrophic Lateral Sclerosis, also called Lou Gehrig’s disease), you automatically get Part B the month your disability benefits begin.


Medicare pays a fixed amount for your care every month to the companies offering Medicare Advantage Plans. These companies must follow rules set by Medicare. However, each Medicare Advantage Plan can charge different out-of-pocket costs and have different rules for how you get services (like whether you need a referral to see a specialist or if you have to go to only doctors, facilities, or suppliers that belong to the plan).

  • General Enrollment Period — Between January 1–March 31 each year. Your coverage will begin on July 1. You may have to pay a late enrollment penalty.
  • Special Enrollment Period — If you wait to sign up for Part B because you or your spouse is currently working, and you are covered by a group health plan based on that work, or if you are disabled and you or a family member is working, and you are covered by a group health plan based on that work. You can sign up for Part B anytime while you have group health plan coverage based on current employment or during the 8-month period that begins the month after the employment ends, or the group health plan coverage ends, whichever happens first. If you have COBRA coverage, you must enroll during the 8-month period that begins the month after the employment ends. This Special Enrollment Period doesn’t apply to people with End-Stage Renal Disease (ESRD).

Special Enrollment Period for International Volunteers — If you waited to sign up for Part B because you had health insurance while volunteering outside of the U.S. for a tax exempt organization for at least a year. You can sign up during the 6-month period that begins the first month that any one of the following happens:

  • You are no longer volunteering outside the U.S.
  • The sponsoring organization is no longer tax exempt.
  • You no longer have health insurance coverage outside the U.S.



Medicare Advantage Plans can be:

  • Health Maintenance Organizations (HMO)
  • Preferred Provider Organizations (PPO)
  • Private Fee-for-Service Plans (PFFS)
  • Point of Service (POS) Plans
  • Provider Sponsored Organizations (PSO)
  • Medical Savings Account (MSA) Plans
  • Special Needs Plans (SNP)

Health Maintenance Organizations (HMO) - A type of Medicare Advantage Plan that is available in some areas of the country. Plans must cover all Medicare Part A and Part B health care. Some HMOs cover extra benefits, like extra days in the hospital. In most HMOs, you can only go to doctors, specialists, or hospitals on the plan’s list, except in an emergency. Your costs may be lower than in Original Medicare.

Preferred Provider Organizations (PPO) - A type of Medicare Advantage Plan in which you pay less if you use doctors, hospitals, and providers that belong to the network. You can use doctors, hospitals, and providers outside of the network for an additional cost.

Private Fee-for-Service Plans (PFFS) - A type of Medicare Advantage Plan in which you may go to any Medicare-approved doctor or hospital that accepts the plan’s payment. The insurance plan, rather than the Medicare Program, decides how much it will pay and what you pay for the services you get. You may pay more or less for Medicare-covered benefits. You may have extra benefits Original Medicare doesn’t cover.

Medical Savings Accounts (MSA) - Medicare MSA Plans have two parts: a high deductible health plan and a bank account. Medicare gives the plan an amount each year for your health care, and the plan deposits a portion of this money into your account. The amount deposited is less than your deductible amount, so you will have to pay out-of-pocket before your coverage begins.

Point of Service (POS) Plans - An HMO option that lets you use doctors and hospitals outside the plan for an additional cost.

Provider Sponsored Organizations (PSO) - Plans run by a provider or group of providers. In a PSO, you usually get your health care from the providers who are part of the plan.

Special Needs Plans (SNP) - A special type of plan that provides more focused health care for specific groups of people, such as those who have both Medicare and Medicaid, who reside in a nursing home, or who have certain chronic medical conditions.

How Much Do Medicare Advantage Plans Cost?


The out-of-pocket costs for a Medicare Advantage Plan vary widely, and depend on the following:

Whether the plan charges a monthly premium in addition to your Part B premium.
Whether the plan pays any of the monthly Part B premium.
Whether the plan has a yearly deductible or any additional deductibles.
How much you pay for each visit or service (copayments).
The type of health care services you need and how often you get them.
Whether you follow the plan's rules, like using network providers.
Whether you need extra coverage and what the plan charges for it.
Whether the plan has a yearly limit on your out-of-pocket costs for all medical services.

A few Medicare Advantage plans may pay all or part of your Part B premium. (You still get all Part A and Part B-covered services). Your Medicare Advantage plan premium may also include all or part of the premium for Medicare prescription drug coverage (Part D).

If you have limited income and resources, you may qualify for the following:

Extra Help paying for your Part D premium and other prescription drug coverage costs.
Help from your state to pay your Part B premium.

For More Information:

Call  1-800-MEDICARE ( 1-800-633-4227 FREE). TTY users should call  1-877-486-2048FREE, 24 hours a day/7 days a week.
Visit to view the brochure, “Get Help With Your Medicare Costs: Getting Started.” You can learn more by reading Medicare & You, the official government handbook about Medicare. You will need the free Adobe® Reader® software to download the files.


You can join, switch, or drop a Medicare Advantage Plan at these times:

When you first become eligible for Medicare (the 7-month period begins 3 months before the month you turn age 65, includes the month you turn age 65, and ends 3 months after the month you turn age 65).
If you get Medicare due to a disability, you can join during the 3 months before to 3 months after your 25th month of disability. You will have another chance to join 3 months before the month you turn age 65 to 3 months after the month you turn age 65.
During the Annual Election Period between November 15–December 31, 2010; In 2011, and subsequent years, between October 15-December 7. Your coverage will begin on January 1 of the following year, as long as the plan gets your enrollment request by December 31.
Medicare Advantage enrollees have an annual opportunity to prospectively disenroll from any Medicare Advantage plan and return to Original Medicare between January 1 and February 14 of every year. This is known as the Medicare Advantage Disenrollment Period (MADP). Disenrollment requests received during this MADP will be processed for the first of the following month. Regardless of whether the MA plan included Part D drug coverage, MA enrollees using the MADP to disenroll from MA from January 1 through February 14 are eligible for a Special Election Period (SEP) to enroll in a Prescription Drug Plan (PDP) and may request enrollment in a PDP during the same time frame. This does not apply to members of Private Fee-For-Service Medicare Advantage-Only (PFFS MA-Only) plans who are also enrolled in separate prescripption drug plans (PDPs). An individual may use this SEP to request enrollment in a PDP subsequent to having submitted a disenrollment request from the MA plan during the MADP or may simply request enrollment in the PDP, resulting in automatic disenrollment from the MA plan. Individuals enrolled in MA-only PFFS plans must request disenrollment from the MA-only plan in order to be eligible for this SEP, as enrollment in a PDP will not result in automatic disenrollment from the MA-only plan.

In most cases, you must stay enrolled for that calendar year starting the date your coverage begins. However, in certain situations, you may be able to join, switch, or drop a Medicare Advantage Plan at other times. Some of these situations include the following:

If you move out of your plan’s service area
If you have both Medicare and Medicaid
If you qualify for Extra Help to pay for your prescription drug costs
If you live in an institution (like a nursing home)

Learn More About Medicare

You can learn more about the Original Medicare Plan and the Medicare program by reading  “Medicare and You”, the official government handbook about Medicare. 

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