Laser is, for the most part, operator-dependent. In order to get the best result, the operator must know how to change the setting depending on the type and the thickness of the skin. On top of that, not all lasers are created equal. There are different types of lasers and they all serve different purposes.

So rather than going to any doctor or any laser shop, educate yourself about scar remodeling and what it entails. There are better treatments than laser depending on your scar type. I suggest you post a pic so you can be better served.