One way to locate a therapist suitable for you is by using your state association’s websites for the primary providers – psychiatry, psychology, social work, counseling, and nurse practitioners.
In a parallel fashion, the national organizations for these providers also contain methods to identify local practitioners. Another way is to determine therapists who have specialized in, and may have received advanced training in, the treatment of trauma and anxiety disorders.
The Anxiety and Depression Association of America has a Find A Therapist website.
So too does the International Society for the Study of Trauma and Dissociation.