Financial Tips

Medicare Open Enrollment 2025: 5 Costly Mistakes to Avoid

Medicare

Every year, millions of Americans face the same decision: should I stick with my current Medicare plan or make a change? For 2025, Medicare Open Enrollment runs from October 15 through December 7, and the stakes couldn’t be higher. The choices you make during this window determine your healthcare coverage—and your costs—for the entire year ahead.

The problem? Many people simply “set it and forget it.” They let their old plan renew without taking a closer look. Others rush to choose a plan based on a single factor, like the monthly premium, only to regret it later. These mistakes can add up to thousands of dollars in unnecessary expenses or gaps in care.

Here are five of the most common, and costly, mistakes people make during Medicare open enrollment 2025, along with practical ways to avoid them.

Mistake #1: Letting Your Plan Auto-Renew

It’s easy to do. Life is busy, and last year’s plan seemed fine, so you let it roll over. But here’s the catch: Medicare Advantage and Part D prescription drug plans often change their benefits and costs every year.

Maybe your doctor is no longer in the network. Maybe your prescriptions moved to a more expensive tier. Maybe your deductible quietly doubled. If you don’t review the changes, you could be in for a very expensive surprise come January.

Avoid it: Take time to compare your current plan against what’s available for 2025. Even if you’ve been happy with your coverage, don’t assume it’s still the best fit.

Mistake #2: Shopping by Premium Alone

We all like to save money, but when it comes to Medicare, the cheapest plan on paper isn’t always the cheapest plan in practice. A $0 premium Advantage plan may look attractive, but if it comes with high co-pays for doctor visits, or if your prescriptions aren’t fully covered, you could end up spending far more over the course of the year.

Think of it like buying a car: the sticker price isn’t the only cost. You have to factor in gas, maintenance, and insurance. Medicare works the same way.

Avoid it: Look at total annual costs—premiums plus deductibles, co-pays, and prescription expenses. Sometimes paying a slightly higher monthly premium actually saves you money in the long run.

Mistake #3: Skimming Over Prescription Coverage

Prescription drugs are one of the biggest budget-busters for retirees. The frustrating part? Formularies—the lists of covered drugs—change every year. Even if you’ve been on the same medications for years, the rules around coverage may shift.

  • Your drug could move from a preferred tier to a higher-cost tier.
  • Some medications may now require prior authorization.
  • A new deductible could apply to your prescriptions.

Imagine finding out in January that the pill you’ve taken for a decade now costs three times as much—that’s the reality for people who don’t double-check drug coverage.

Avoid it: Sit down with a licensed professional to review how your exact prescriptions are covered under 2025 plans.

Mistake #4: Assuming Original Medicare Is “Good Enough”

Original Medicare (Parts A & B) provides important coverage for hospital and medical services, but it leaves some gaping holes.

  • No prescription drug coverage.
  • No cap on out-of-pocket expenses.
  • No dental, vision, or hearing benefits.

For a healthy retiree, it may not feel like a big deal. But one hospital stay, or a round of ongoing treatments, can add up to tens of thousands in uncovered costs. That’s a risk too big to ignore.

Avoid it: Consider how a Medicare Advantage plan or a Medigap supplement, paired with Part D prescription coverage, might better protect you from unexpected medical bills.

Mistake #5: Waiting Until the Last Minute

It happens every year: people put off reviewing their options until early December, then rush through the process. In the scramble, they overlook important details or miss opportunities to improve their coverage.

Avoid it: Start reviewing your options early in the open enrollment period. That way, you’ll have time to compare plans thoroughly, ask questions, and make decisions without the pressure of a looming deadline.

The Bottom Line: Make 2025 the Year You Get It Right

Medicare open enrollment 2025 is your chance to take control of your healthcare coverage and costs. By avoiding these five common mistakes—letting plans auto-renew, focusing only on premiums, ignoring drug coverage, relying solely on Original Medicare, and waiting too long—you’ll be in a stronger position to protect your health and your wallet.

But you don’t have to navigate the process alone. At American Legacy Solutions, we help families make sense of Medicare and Social Security so they can feel confident about their future. From comparing plans to understanding the fine print, our team is here to guide you every step of the way.

Don’t leave your health or finances to chance this year. Contact American Legacy Solutions today to schedule a consultation and make Medicare open enrollment 2025 work for you.