Common Medicare OEP Mistakes — and How to Avoid Them

The Medicare Open Enrollment Period exists to help people fix coverage issues — but mistakes made during OEP can follow you for the rest of the year. Understanding the most common errors can help you make a confident, informed decision.

Mistake #1: Assuming You’re Stuck With Your Plan

Many Medicare Advantage members believe once January arrives, they’re locked into their plan until October. That’s not true. OEP was created specifically to give you a second chance if your plan isn’t working.

Mistake #2: Making a Change Without Checking Doctors

Switching plans without confirming provider networks is one of the most costly mistakes. Even similar-sounding plans may have very different networks.

Always verify:

• Primary care doctors

• Specialists

• Hospitals and imaging centers

Mistake #3: Focusing Only on Premiums

A $0 premium plan can still come with high copays, coinsurance, and out-of-pocket exposure. Reviewing the full cost structure matters more than focusing on monthly premiums alone.

Mistake #4: Ignoring Prescription Coverage Details

Drug formularies and tiers change annually. Even one uncovered medication can significantly impact your budget.

Mistake #5: Waiting Too Long

OEP ends March 31. Missing the deadline means waiting until the next Annual Enrollment Period — even if your plan isn’t working.