Dr. Martin Zfaz Dr. Martin Zfaz is the Medical Director at Stepping Stone Center for Recovery. Involved in the field of addiction treatment for the last 22 years, Dr. Zfaz is certified by the American Medical Society on Alcoholism and Other Drug Dependencies, is a member of the National Council on Alcoholism , as well as, International Council of Alcoholism and Addiction Medicine. steppingstonecenter.org