Medicare Open Enrollment is open now through December 7. If you haven't compared plans yet, this guide walks you through the exact process — step by step — using the tools that are already free and available to you. Most people can make an informed decision in under 30 minutes once they know what to look at.
Step 1: Gather What You Need Before You Start
Before you open any website or call any number, pull together:
- Your current plan name and ID number (on your Medicare card or insurance card)
- A list of every prescription you take and the dosage — this is the single most important input in any comparison
- The names of your doctors and preferred hospitals
- Your ANOC letter, if it arrived by September 30 — this is your Annual Notice of Change, which outlines exactly what's changing with your current plan
If you can't find your ANOC letter, contact your plan directly or log into your plan's member portal. The information is there; you just need to access it.
Step 2: Go to medicare.gov/plan-compare
The Medicare Plan Finder at medicare.gov/plan-compare is the official free tool and the most comprehensive one available. It's not flashy, but it works.
When you log in or start as a guest: - Enter your current drugs and exact dosages — not just drug names, but specific milligrams and whether you take generics - Select your preferred pharmacy (some plans have preferred pharmacy networks with lower costs) - Filter by your ZIP code to see what's available in your area
The tool then shows estimated annual drug costs for each plan alongside the premium. This combined view — not just the monthly premium — is what you should be comparing. A plan with a $0 premium but a $3,000 annual drug cost is not a $0 plan.
Step 3: Check That Your Doctors Are In-Network
After narrowing down your plan options based on cost, verify that your current doctors accept each plan you're considering. This step is easy to skip and easy to regret.
Use the provider directory on each plan's website to search for your doctor, specialist, and preferred hospital. If you can't find them in the lookup tool, call the plan directly and ask whether the specific provider is in-network.
The Medicare Plan Finder tool integrates some provider directories, but they are not always up to date. Do not assume. Verify.
Step 4: Look at the Star Rating — But Know What It Means
CMS (Centers for Medicare & Medicaid Services) rates Medicare Advantage plans on a 1-to-5-star scale. Four stars and above is generally a sign of good quality. But understand what star ratings measure:
- Member satisfaction, appeals and complaints, chronic condition management, preventive screenings
- They do NOT capture whether your specific doctor is in-network or whether your specific drugs are covered at a favorable tier
A 4-star plan that covers your cardiologist is almost always better than a 5-star plan that doesn't. Star ratings are a good initial filter, not the final word.
Step 5: Compare Total Annual Cost, Not Just Premium
This is the mistake most people make: comparing monthly premiums and stopping there. The full picture includes:
- Deductible: What you pay before the plan starts covering costs
- Copays and coinsurance: The share you pay for each visit, specialist, or service
- Maximum out-of-pocket: The ceiling on what you'll spend in a calendar year on covered services — Medicare Advantage plans are required to have this; Original Medicare does not
- Drug costs: Tier placement for your medications matters enormously; a drug on Tier 1 costs far less than the same drug on Tier 3 or 4
The Plan Finder tool calculates an estimated total annual cost based on your specific drug list. Use it.
Getting Help If You're Stuck
You do not have to do this alone. Three free resources that are genuinely useful:
SHIP (State Health Insurance Assistance Program): Every state has SHIP counselors who provide free, unbiased help with Medicare plan comparisons. They do not sell plans. They have no financial stake in what you choose. Find your state's SHIP at shiphelp.org or call 1-800-MEDICARE.
1-800-MEDICARE (1-800-633-4227): The official line is available 24 hours. Representatives can walk you through the Plan Finder and answer coverage questions.
A licensed Medicare insurance broker: A broker can compare plans across multiple carriers and may see options the Plan Finder doesn't highlight. Choose one who asks detailed questions about your doctors and medications before recommending anything. If a broker pushes one plan hard without asking about your situation, find someone else.
How to Actually Switch Plans
If you've decided to switch, the process is simpler than most people expect:
- Enroll directly with the new plan — contact them online or by phone. You do not need to cancel your old plan separately; the new plan notifies Medicare automatically.
- If you're switching from Original Medicare to Medicare Advantage, your new plan begins January 1.
- If your MA plan includes drug coverage (most do), do not keep a separate Part D plan — you'd be paying twice.
- Confirm that your new insurance cards arrive before January 1. If they haven't arrived by mid-December, call your new plan.
The December 7 Deadline
The best plan decisions get made before Thanksgiving, when there's still time to think clearly and ask questions without the end-of-year rush. The window closes December 7 — not December 31. After that, you are locked into your current or new plan until next October 15, regardless of what changes in your health or what changes in the plan.
Spending 30 minutes now with the Plan Finder is worth the hour of phone calls you're preventing next spring when you discover your plan changed something you didn't notice.
Have questions about your specific situation?
Our network of verified professionals can give you personalized guidance — at no cost to you.
Find a Professional Near YouDisclaimer: This article is for informational purposes only and does not constitute legal, financial, or medical advice. Always consult a qualified professional for guidance specific to your situation.