Moving to Spain is one of the best decisions you'll ever make. But choosing the wrong health insurance? That's a mistake that can cost you thousands of euros — or worse, get your visa rejected. After 15 years helping expats navigate the Spanish health insurance system, I've seen the same mistakes made over and over again. Here's what to watch out for. Mistake #1 — Using Travel Insurance Instead of Private Health Insurance This is by far the most common and costly mistake I se