Dr. Mark is the founder of ACE. Here is his bio:

Throughout the U.S., Dr. Mark has provided mental health treatment for individuals, groups, and families in diverse clinical settings — including private practice, residential (“rehab”), inpatient, correctional, and in the community — for nearly 25 years. Having earned a Ph.D. in Clinical Psychology in 2002, he has specialized in addiction treatment and recovery since 2016. Dr. Mark’s professional expertise is uniquely informed by his personal experience with drug addiction and its life-altering consequences. A C.V. is available upon request.