Medicare Open Enrollment doesn’t begin until October 15, but waiting until then to figure out what you need can turn a straightforward insurance review into a frustrating scavenger hunt. The Medicare Open Enrollment period runs from October 15 through December 7 each year, and changes selected during that window generally take effect January 1. Medicare’s own 2026 handbook tells beneficiaries to begin comparing their existing health and drug coverage with 2027 options starting October 1. If you’re preparing for Medicare Open Enrollment, however, there’s no reason you can’t organize the information you’ll need well before new plans become available for comparison. These seven items will make it much easier to determine whether your current coverage still fits or whether 2027 is the year to make a change.
1. Make a Complete List of Every Prescription You Take
Start with the medicine cabinet because prescriptions can dramatically change which Medicare plan looks cheapest over an entire year. Write down every prescription’s exact name, dosage, how often you take it, and whether you regularly receive a 30-day or 90-day supply. Medicare explains that Part D plans maintain their own formularies, or lists of covered drugs, and can place medications on different tiers that affect what beneficiaries pay. A drug that’s inexpensive under your current plan isn’t guaranteed to occupy the same tier or have the same cost-sharing under another plan next year. Creating this medication list now also makes Medicare Plan Compare much more useful because you can enter your prescriptions and estimate monthly and yearly costs under available plans.
If you use a Medicare.gov account, you can also make sure your saved drug and pharmacy information is current now, so you aren’t rebuilding the list when plan comparisons begin.
2. Write Down the Doctors and Specialists You Don’t Want to Lose
Next, create a list of the healthcare providers who matter most to you, including your primary-care physician, cardiologist, oncologist, physical therapist, preferred hospital, or other frequently used providers. This is particularly important for people considering Medicare Advantage because provider networks can vary considerably between plans and plan types. Medicare notes that HMO members generally need to receive non-emergency care from providers and facilities within their plan’s network, while PPO plans provide more flexibility but can charge more for out-of-network care. Medicare specifically recommends asking doctors and pharmacies whether they’re in a prospective plan’s network before joining.
3. Gather Your Prescription Receipts and Pharmacy Information
Your preferred pharmacy can affect prescription costs almost as much as the plan itself, so don’t overlook where you actually fill your medications. Medicare explains that some drug plans use “preferred in-network pharmacies,” where members may receive lower copayments or coinsurance than they would at other pharmacies within the same network. Out-of-network pharmacies can be significantly more expensive and may require you to pay the entire cost upfront, depending on the circumstances and plan rules. Gather several months of pharmacy receipts or review your prescription history online, then write down which local pharmacy you prefer and whether you’re comfortable using mail order or another location if the savings are substantial. During Medicare Open Enrollment, you’ll then be able to compare what your actual medication routine might cost rather than relying on the monthly premium alone.
4. Find Your Current Plan Documents, Especially the ANOC When It Arrives
Create a folder now for Medicare paperwork, and make your current plan information the first thing that goes into it. If you’re enrolled in a Medicare Advantage or Part D plan, Medicare says your plan will send an Annual Notice of Change, commonly called the ANOC, each fall explaining changes in coverage, costs, and other plan details that take effect in January. Medicare says beneficiaries should receive the ANOC in September and should contact their plan if it doesn’t arrive.
When the ANOC arrives, compare it side-by-side with your current Evidence of Coverage and circle changes involving premiums, deductibles, copays, drug coverage, provider networks, and benefits you use regularly. That gives you a personalized “change list” to investigate once 2027 plans become available. Don’t toss it aside simply because you’ve been happy with your coverage in 2026, because premiums, deductibles, drug formularies, networks, copayments, and benefits can change from one plan year to another.
5. Total What Healthcare Has Really Cost You This Year
Premiums get most of the attention in Medicare advertisements, but they tell only part of the financial story. Pull together your 2026 premiums, prescription copays, medical copays, coinsurance, deductibles, dental expenses, hearing costs, vision expenses, and any other recurring healthcare spending you can identify. Medicare recommends comparing monthly premiums and deductibles along with estimated yearly prescription costs when evaluating plans. Someone paying a very low premium but hundreds of dollars in recurring copays may discover that a plan with a somewhat higher premium produces lower overall annual costs for the care they actually use. Think of Medicare Open Enrollment as an annual spending review rather than a contest to find whichever plan advertises the lowest monthly premium.
6. List the Extra Benefits You Actually Used
Dental, vision, hearing, transportation, fitness memberships, over-the-counter allowances, and other supplemental benefits can make Medicare Advantage plans attractive, but advertised benefits aren’t equally valuable to every person. Look back over 2026 and write down which extras you genuinely used, how often you used them, and approximately how much value you received. If your plan included a fitness membership you never activated or dental benefits that didn’t cover the dentist you wanted, don’t assign those features the same value next year merely because they look impressive on a brochure. Conversely, someone who regularly uses transportation assistance or a valuable dental benefit has a legitimate reason to include it in a comparison.
7. Make a List of What Changed in Your Life This Year
The best Medicare plan for you isn’t determined only by what insurers change; it’s also affected by what changed in your own life. Maybe you started a new prescription, received a new diagnosis, began seeing a specialist, stopped driving, started spending winters in another state, or expect a major procedure next year. Medicare specifically advises people who live in another state for part of the year to check whether a prospective plan will provide coverage there. Your list should also include any other insurance or drug coverage you have. If you also have employer, retiree, union, or other health coverage, check with that plan’s benefits administrator or insurer before making Medicare changes so you understand how the coverages interact.
For example, someone who spends January through March in Florida but keeps a permanent home in Ohio may care much more about out-of-area provider access than someone who rarely leaves home. Write those recurring travel patterns down now so you remember to investigate them when comparing networks. Those personal changes may ultimately matter more than whether your existing plan’s premium increases by a few dollars.
Do the Homework Now So October Becomes a Comparison, Not a Scramble
You don’t need finalized 2027 plan prices today to start preparing for Medicare Open Enrollment. In fact, CMS says the finalized 2027 Medicare Advantage and Part D landscape is expected in mid-to-late September, along with final average Medicare Advantage and Part D premium information. What you can assemble now is everything those plans will eventually need to compete for: your prescriptions, doctors, pharmacies, actual healthcare spending, important benefits, current coverage, and changing health needs. Once 2027 options become available, you’ll be comparing them against a detailed picture of your own life rather than trying to remember twelve months of medical care while the December 7 deadline approaches.
Have you ever discovered during Medicare Open Enrollment that a plan you expected to keep was changing something important for the next year? Share what you learned in the comments.
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Drew Blankenship is a seasoned personal finance and lifestyle writer with more than a decade of professional writing experience crafting clear, actionable advice that helps savers and investors over 40 protect their wealth and make smarter everyday decisions. His bylines appear regularly on SavingAdvice.com, CleverDude.com, and other respected outlets, where he draws on deep industry knowledge to deliver practical insights on cost control, smart spending, and long-term financial security.
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