Choosing a Medicare plan sounds simple at first... Until you actually start looking. Suddenly there are more options than expected, terms that don’t make much sense, and decisions that feel more permanent than they probably should. So most people do one of two things. They either go with whatever seems easiest, or they stick with what they already have and hope it’s still working, year after year. And sometimes that’s fine, but sometimes it leads to problems that don’t show up until later. Mistake #1: Choosing Based on the Lowest Cost. It’s natural to look at monthly premiums first. But the lowest cost upfront doesn’t always mean the lowest cost overall. What looks like a good deal at first can end up costing you way more, depending on how you actually use your coverage. Plans can differ in: out-of-pocket costs, network restrictions, prescription coverage. Mistake #2: Not Checking Doctors and Networks. One of the most common issues people run into is realizing too late, is that their doctor isn’t in-network, or that their preferred hospital isn’t covered the way they expected. This doesn’t always come up during enrollment, especially if you’re just comparing plans quickly. But it definitely matters once you actually need care. Mistake #3: Letting It Auto-Renew Without Reviewing. A lot of people assume that if their plan hasn’t 'changed', they’re still in a good spot. But Medicare plans can change every year. Benefits shift. Costs adjust. Networks and prescriptions get added or taken away. What worked well last year might not be the best option now, especially if what you qualify for has changed... And sometimes that happens without people even knowing. Mistake #4: Not Understanding the Difference Between Plan Types. Medicare Advantage and Supplement plans are built differently. They come with different structures, different tradeoffs, different pricing methods, and different long-term considerations. Choosing between them isn’t just about what’s available, it’s about what actually fits your situation. Without understanding that difference, it’s easy to end up in something that doesn’t really align with what you need. And sometimes you're stuck with your decision longer than you'd realize. Mistake #5: Trying to Figure It All Out Alone. There’s a lot of information out there. Too much in our opinion. Some of it is helpful. But some of it just makes things way more confusing. Trying to sort through everything on your own can lead to decisions that feel rushed or uncertain. And most people don’t realize there was a better option until it's too late.