A speech language pathologist with a specialization in fluency (hopefully you won't be working on fluency, that's just what ASHA calls the specialization in stuttering). I think speech therapy is the best thing to do, but only if you can find a good therapist who gets it. And if ok honest, not many do and even less have effective therapy methodologies to help. I remember the NSA or stuttering foundation website has a page of SLPs by state you could look at. In fact, it might be better to contact either organization and see if they can recommend a therapist for you. Good on you for seeking help. I hope you can find someone good near you.