Medicare Part C combines hospital, doctor, and prescription drug coverage into one plan

Medicare Part C, also called Medicare Advantage, is an alternative way to get your Medicare benefits. Instead of using Original Medicare (Part A and Part B) and buying a separate prescription drug plan, you get all three types of coverage—hospital care, doctor visits, and medications—through a single private insurance company that contracts with Medicare.

Part C plans must cover everything that Original Medicare covers, but they often add extra benefits that Original Medicare does not. The trade-off is that you usually pay lower premiums and out-of-pocket costs, but you have to use doctors and hospitals within the plan's network.

Key Takeaways

  • Medicare Part C covers all the same hospital and doctor services as Original Medicare, plus prescription drugs, all in one plan.
  • Most Part C plans include dental, vision, and hearing coverage that Original Medicare does not offer.
  • You must use in-network doctors and hospitals, except in emergencies, or you may pay more or nothing gets covered.
  • Your out-of-pocket costs depend on the specific plan you choose, and costs vary widely between plans in your area.
  • You can switch to a different Part C plan or back to Original Medicare during the annual enrollment period in the fall.

Hospital and doctor coverage under Part C

Part C covers inpatient hospital stays, emergency room visits, and urgent care the same way Original Medicare does. This includes semi-private rooms, meals, nursing care, and medically necessary procedures while you are in the hospital.

For doctor visits, Part C covers office visits, specialist consultations, lab tests, X-rays, and other diagnostic services. You can see any doctor who participates in your plan's network. If you see an out-of-network doctor without a referral, you may have to pay the full cost yourself, depending on the plan.

Part C also covers preventive care at no cost to you—annual wellness visits, cancer screenings, heart disease screenings, and vaccinations. These services are covered the same way they are under Original Medicare.

Prescription drug coverage included in Part C

Every Medicare Part C plan must include prescription drug coverage. You do not need to buy a separate Part D plan. The plan covers brand-name and generic medications, though your out-of-pocket cost depends on which tier the drug is on and whether you have met your deductible.

Part C drug coverage works differently from standalone Part D plans. Some Part C plans have lower deductibles or no deductible at all for medications. Others have higher deductibles but lower monthly premiums. You should review the drug formulary—the list of covered medications—before you enroll to make sure your current medications are covered.

Extra benefits most Part C plans offer

This is where Part C often differs most from Original Medicare. Many plans include dental coverage for cleanings, fillings, and sometimes dentures or implants. Vision coverage typically pays for eye exams, glasses, and contact lenses. Hearing coverage may cover hearing aids or hearing exams.

Other common extra benefits include fitness programs (often a gym membership or online exercise classes), transportation to medical appointments, over-the-counter medication allowances, and meal delivery after a hospital stay. Some plans cover acupuncture, chiropractic care, or podiatry. The specific benefits vary by plan and by region.

Not every plan offers the same extras, and not every plan is available in every area. You need to check what your local plans offer during enrollment.

Network requirements and out-of-network costs

Part C plans operate as Health Maintenance Organizations (HMOs), Preferred Provider Organizations (PPOs), or Private Fee-for-Service plans. HMOs are the most restrictive: you must use in-network doctors and hospitals, and you usually need a referral from your primary care doctor to see a specialist. If you go out of network without a referral, the plan may not cover the visit at all.

PPO plans are more flexible. You can see out-of-network doctors without a referral, but you will pay more out of pocket. Private Fee-for-Service plans let you see any doctor who accepts the plan's terms, regardless of network status.

In all cases, emergency care is covered even if you are out of network. If you travel or need urgent care while away from home, call your plan first to find out what is covered.

How much you pay with Part C

Part C plans have a monthly premium, which varies by plan and region. Some plans have a zero premium—you pay only the Part B premium to Medicare—while others charge $50 to $200 or more per month. You still pay your Part B premium to Medicare separately.

You also pay out-of-pocket costs when you use services: copays for doctor visits (often $10 to $50), coinsurance for hospital stays, and deductibles before coverage begins. These amounts vary by plan. Some plans have an annual out-of-pocket maximum, meaning once you spend that amount, the plan covers 100 percent of covered services for the rest of the year.

The total cost—premium plus out-of-pocket expenses—depends on which plan you choose and how much medical care you use. A plan with a low premium might have high copays, while a plan with a higher premium might have lower copays. You should compare plans based on your expected health care needs, not just the premium.

When you can enroll in or change Part C

You can enroll in Part C when you first become may be able to access for Medicare. If you are already on Original Medicare, you can switch to a Part C plan during the Annual Enrollment Period, which runs from October 15 to December 7 each year. Changes take effect January 1.

If you enroll in Part C and later want to switch back to Original Medicare, you can do so during the Annual Enrollment Period. Some people also have the right to switch outside this window if they move out of their plan's service area or if their plan is being discontinued.

Frequently Asked Questions

Does Medicare Part C cover everything Original Medicare covers?

Yes, Part C must cover all hospital and doctor services that Original Medicare covers. The difference is that Part C adds prescription drug coverage and often includes extra benefits like dental and vision. However, you must use in-network providers, whereas Original Medicare lets you see any doctor who accepts Medicare.

Can I use my Part C plan if I travel out of state?

Emergency care is covered anywhere in the United States. For non-emergency care, you should check with your plan first. Some plans have out-of-state networks; others do not. If you travel frequently or spend winters in another state, ask your plan about coverage before you enroll.

What happens if my doctor is not in my Part C plan's network?

If you see an out-of-network doctor without authorization, you may have to pay the full cost yourself, depending on your plan type. HMO plans typically do not cover out-of-network care except emergencies. PPO plans cover out-of-network care but at a higher cost to you. Call your plan to ask about your options before you schedule an appointment.

Do I still need to pay a Part B premium if I have Part C?

Yes. You pay your Part B premium to Medicare, and then you may pay an additional premium to your Part C plan. Some Part C plans have a zero premium, meaning you pay only the Part B premium, but you still owe it.

Can I switch Part C plans if I am unhappy with mine?

Yes, during the Annual Enrollment Period from October 15 to December 7, you can switch to a different Part C plan or back to Original Medicare. The change takes effect January 1. If you move out of your plan's service area, you may be able to switch at other times of the year.