When can I add Medicare Part C?

You can sign up for Medicare Part C (Medicare Advantage) during specific enrollment periods, provided you already have Medicare Part A and Part B.

Key Enrollment Periods for Part C

• Initial Enrollment Period (IEP / ICEP): A 7-month window when you first become eligible for Medicare. It starts 3 months before the month you turn 65, includes your birthday month, and ends 3 months after.
• Medicare Open Enrollment (Annual Election Period): Runs from October 15 to December 7 each year. You can use this time to switch from Original Medicare to a Part C plan, change your current Part C plan, or return to Original Medicare. Changes take effect on January 1.
• Medicare Advantage Open Enrollment Period: Runs from January 1 to March 31 each year. If you already have a Medicare Advantage plan, you can switch to a different Part C plan or drop it to return to Original Medicare.
• Special Enrollment Periods (SEPs): Available if you experience specific life events, such as moving outside your plan's service area, losing your current coverage, or qualifying for other assistance programs.

You can review and compare local plan options or sign up directly through the official Medicare Enrollment Guide.

No, you cannot enroll in Medicare Part C (Medicare Advantage) at any time. You can only join, switch, or drop a plan during specific enrollment periods.

Key Enrollment Periods

• Initial Enrollment Period (IEP): The 7-month window when you first become eligible for Medicare. It includes the 3 months before you turn 65, your birthday month, and the 3 months after.
• Annual Enrollment Period (October 15 – December 7): Anyone with Medicare can join, switch, or drop a Medicare Advantage Plan (Part C) during this time. Changes take effect on January 1.
• Medicare Advantage Open Enrollment Period (January 1 – March 31): If you already have a Medicare Advantage plan, you can switch to a different Medicare Advantage plan or return to Original Medicare once during this window.
• Special Enrollment Periods (SEPs): You can change plans outside these standard dates if you experience certain life events. Examples include moving outside your plan's service area, losing your employer coverage, or gaining/losing Medicaid.

You can learn more details about your eligibility and options directly through the Official Medicare Enrollment Guide.

You can add Medicare Part C (Medicare Advantage) by signing up for a plan through the Official Medicare Website, contacting an insurance company directly, or calling Medicare at 1-800-MEDICARE.

Requirements Before You Enroll

• Have Parts A and B: You must already be enrolled in Original Medicare Part A (hospital insurance) and Part B (medical insurance).
• Live in the Area: You must live in the service area of the specific Part C plan you want to join.
• Keep Paying Part B: You must continue paying your standard monthly Medicare Part B premium, even if your Part C plan has a $0 premium.

When You Can Add Part C

• Initial Enrollment Period: The 7-month window when you first become eligible for Medicare (around your 65th birthday or based on a disability).
• Annual Enrollment Period: From October 15 to December 7 each year, when anyone with Medicare can join, switch, or drop a plan.
• Special Enrollment Period: Specific life events (like moving to a new address or losing other insurance) that let you change plans outside standard times.

Ways to Sign Up

• Online: Visit Medicare Planfinder to compare and enroll in plans.
• By Phone: Call Medicare directly at 1-800-MEDICARE (1-800-633-4227) or call a private insurance company's enrollment line.
• Through the Insurer: Fill out an application directly on a private insurer's website.
• With Help: Work with a licensed, independent insurance broker who specializes in Medicare.

The primary downside of Medicare Part C (Medicare Advantage) is that plans use restrictive networks and require prior approval for treatments, which can limit your choice of doctors and delay medical care.

Key Drawbacks of Medicare Part C

• Limited Provider Networks: You must generally see doctors and hospitals within the plan’s local network. Seeing out-of-network providers can cost much more or may not be covered at all.
• Prior Authorization Requirements: You often need advance approval from the insurance company before getting certain tests, specialist visits, or treatments. This process can cause frustrating delays or denials of care.
• Geographic Restrictions: Routine coverage is usually restricted to your local area, meaning these plans are often poorly suited for people who travel frequently or split time in another state.
• Annual Plan Changes: Benefits, copays, and provider networks can change from year to year, requiring you to carefully review your plan every annual enrollment period.
• No Medigap Compatibility: You cannot use a Medicare Supplement (Medigap) policy to cover out-of-pocket costs while enrolled in a Medicare Advantage plan.

Yes, you still have to pay your standard Medicare costs, and some Medicare Advantage plans charge an extra monthly fee.

Required Costs You Must Pay

• Part B Premium: You must continue paying your standard Medicare Part B premium (which is $202.90 per month for most people). You must pay this even if you choose a Part C plan with a $0 monthly fee.
• Part A Premium: If you do not qualify for premium-free Part A, you must continue paying for it. Most people pay $0 for Part A.

Extra Costs for Part C

• Plan Premiums: Many Medicare Part C plans have a $0 monthly plan premium. Other plans charge an extra monthly fee that typically ranges from a few dollars to over $200.
• Out-of-Pocket Costs: You will pay copayments, coinsurance, and deductibles for doctor visits, hospital care, or prescription drugs.
• Annual Maximum Limit: Every Part C plan has a yearly limit on your out-of-pocket spending (capped at $9,250 in 2026) to protect you from high medical bills.