Vasectomy.....

Cory
I don't know where to start. My so and I want to have a baby but he had a vasectomy done long before I met him. I don't have kids but he does, and we really want to start our little family! What path do I take, what doctor is the right one to go too? Is it even worth trying to go that route?? Anyone know or has been in this situation? I don't know where to start??