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Medicare Annual Enrollment Period: How to Review and Change Your Coverage

Every fall, Medicare beneficiaries can review and change their coverage during the Annual Enrollment Period. Here is what changes you can make, what to review, and how to make the best decision.

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William Gray
4 min read
Medicare Annual Enrollment Period: How to Review and Change Your Coverage

Medicare Annual Enrollment Period: How to Review and Change Your Coverage

Every year from October 15 through December 7, Medicare beneficiaries have the opportunity to review their coverage and make changes that take effect January 1. This is called the Annual Enrollment Period (AEP) -- and it's the most important Medicare event of the year.

What You Can Change During AEP

During AEP, you can:

  • Switch from Original Medicare to a Medicare Advantage plan
  • Switch from Medicare Advantage back to Original Medicare
  • Switch from one Medicare Advantage plan to another
  • Switch from one Part D drug plan to another
  • Join a Part D plan if you didn't have one before (late enrollment penalty may apply)
  • Drop a Part D plan (you'll be without drug coverage until the next enrollment period)

What you CANNOT change during AEP:

  • Medigap (Medicare Supplement) plans -- Medigap has its own enrollment rules and is not part of AEP

Why You Should Review Your Coverage Every Year

Plans change every year -- and so do your health needs. Here's what changes between plan years:

Plan changes:

  • Premiums increase or decrease
  • Deductibles and copays change
  • Drug formularies change (your medication may move to a higher tier or be dropped)
  • Provider networks change (your doctor may leave the network)
  • Extra benefits change (dental, vision, hearing allowances)

Your changes:

  • New medications may not be covered by your current plan
  • New health conditions may make a different plan more appropriate
  • Your doctors may have changed

Even if you're happy with your current plan, reviewing it annually ensures you're not paying more than necessary or missing better coverage.

How to Review Your Coverage

Step 1: Review your Annual Notice of Change (ANOC) Your plan must send you an ANOC by September 30 each year. This document summarizes all changes to your plan for the coming year. Read it carefully.

Step 2: Make a list of your current medications List every prescription drug you take -- name, dosage, and frequency. This is the foundation of your plan comparison.

Step 3: List your doctors and hospitals Note every provider you see regularly and any hospitals you prefer.

Step 4: Use Medicare Plan Finder Go to Medicare.gov/plan-compare and enter your ZIP code, medications, and preferred pharmacies. The tool calculates your estimated total annual cost for each available plan -- including premiums, deductibles, and drug costs.

Step 5: Compare the top plans Look beyond the premium. Compare:

  • Total estimated annual drug costs
  • Doctor and hospital network
  • Out-of-pocket maximum
  • Extra benefits (dental, vision, hearing)
  • Star rating

Step 6: Enroll by December 7 Changes made during AEP take effect January 1. If you don't make changes, your current coverage continues -- but it may have changed from the prior year.

Common AEP Mistakes to Avoid

Ignoring the ANOC: Many people throw away the ANOC without reading it. This is a mistake -- it tells you exactly what's changing.

Choosing based on premium alone: A $0 premium plan with high drug costs may cost more than a $30/month plan with better drug coverage.

Not checking your drug formulary: Your medications may have moved to a higher tier or been dropped from the formulary. Always verify your drugs are covered at an acceptable cost.

Not checking the network: Your doctor may have left the network. Verify before re-enrolling.

Waiting until December 7: Don't wait until the last day. If you have questions or need help, you want time to get answers.

Getting Help During AEP

  • SHINE (Serving Health Insurance Needs of Elders): Free, unbiased Medicare counseling in Florida. Call 1-800-963-5337.
  • Licensed Medicare specialist: Can compare all available plans in your area and help you choose the best fit.
  • Medicare.gov: Plan comparison tool and general information.

We do not offer every plan available in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.

Explore Topics

#Annual Enrollment Period#AEP#Medicare Enrollment#Open Enrollment

About the Author

William Gray

Independent Medicare Broker

US Air Force Veteran · Florida Medicare Specialist

William Gray is an independent Medicare insurance broker based in Daytona Beach and Palm Coast, FL. A US Air Force veteran (A-10 crew chief, Germany), he spent years in corporate insurance before going independent to serve Florida seniors directly. He has helped more than 1,000 clients across Northeast Florida compare Medicare Advantage, Medigap, and Part D plans — always at no cost to the client.

FL License #W690237 — VerifiedAHIP Medicare Certified1,000+ Florida clients helped60+ carriers compared for every client5.0 stars — 60+ verified Google reviews

We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE (TTY: 1-877-486-2048) to get information on all of your options.

Not affiliated with or endorsed by the U.S. government or the federal Medicare program. This is an advertisement for insurance. William Gray and affiliated licensed agents are independent insurance agents, not government employees or representatives. Medicare has neither reviewed nor endorsed this information.

Not all plans or types of coverage may be available in your area. Plan availability, benefits, and premiums vary by county and ZIP code. Enrollment in any plan depends on contract renewal. Benefits, premiums, and cost-sharing may change on January 1 of each year.

Independent Agent & Compensation Disclosure. William Gray is an independent licensed insurance agent (FL License #W690237) and is not employed by or exclusively affiliated with any single insurance company. William is compensated by insurance carriers when you enroll in a plan. This compensation does not affect the premium you pay — your premium is the same whether you enroll through a broker or directly with the carrier. Affiliated agents are independent contractors solely responsible for their own conduct and representations.