Understanding the Annual Notice of Change (ANOC)

Understanding the Annual Notice of Change (ANOC)

By Pat Brown, MBA

As a Medicare beneficiary, staying informed about your health plan’s changes is crucial for ensuring you receive the best possible care and coverage. One important document that helps you stay updated is the Annual Notice of Change (ANOC). Here’s what you need to know about the ANOC and its significance.

What is the Annual Notice of Change (ANOC)?

The Annual Notice of Change (ANOC) is a document that Medicare Advantage (Part C) and Medicare Part D prescription drug plan enrollees receive each year. The ANOC is sent by your Medicare plan provider and outlines any changes in your plan’s coverage, costs, and service area that will take effect in the upcoming year.

Key Components of the ANOC

The ANOC includes several important pieces of information:

  • Changes to Benefits and Coverage: Detailed descriptions of any modifications to the benefits and services covered by your plan.
  • Changes to Costs: Information on changes to premiums, deductibles, copayments, and coinsurance.
  • Changes to the Plan’s Network: Updates on any changes to the network of doctors, hospitals, and pharmacies associated with your plan.
  • Changes to Prescription Drug Coverage: Alterations in the list of covered drugs (formulary), including any changes to drug tiers and cost-sharing requirements.
  • Plan Service Area: Information about any changes to the geographical area where the plan is available.

When and How You Receive the ANOC

You should receive your ANOC by September 30 each year. The ANOC is typically sent via mail, but some plans may offer the option to receive it electronically. It’s important to read your ANOC carefully to understand how the upcoming changes might affect your healthcare and budget.

Why the ANOC is Important

The ANOC is a critical tool for managing your healthcare coverage because it allows you to:

  • Evaluate Changes: Understand how upcoming changes will impact your coverage and out-of-pocket costs.
  • Compare Plans: Compare your current plan with other available options during the Annual Enrollment Period (AEP), which runs from October 15 to December 7 each year.
  • Make Informed Decisions: Decide whether to keep your current plan or switch to a different Medicare Advantage or Part D plan that better meets your needs.

What to Do After Receiving Your ANOC

Upon receiving your ANOC, take the following steps:

  • Review Thoroughly: Read the document carefully to understand all changes.
  • Compare Options: Use the Medicare Plan Finder tool on the official Medicare website to compare your current plan with other plans available in your area.
  • Consult with a Professional: If you have questions or need assistance, consider consulting with a Medicare expert, such as the agents at Medicare-Planning.com. We can help you understand the changes and explore other plan options to ensure you have the best coverage for your needs.
  • Decide and Enroll: If you decide to change plans, make sure to enroll during the Annual Enrollment Period to ensure your new coverage begins on January 1.


The Annual Notice of Change (ANOC) is an essential document for Medicare Advantage and Part D enrollees, providing important information about changes to your plan for the upcoming year. By carefully reviewing your ANOC, comparing your current plan with other options, and seeking professional guidance if needed, you can make informed decisions about your healthcare coverage. At Medicare-Planning.com, we are here to help you navigate the complexities of Medicare and find the best plan for your needs. Contact us at info@medicare-planning.com for personalized assistance.

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