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Mark S. Sadler, Ph.D.
Oklahoma Licensed Counseling Psychologist​

Dr. Sadler is one of the founding partners of the practice, having been a practicing psychologist for over 30 years.  He received his Bachelor of Science degree and Ph.D. in Counseling Psychology from Oklahoma State University.  He received his Master of Science in Counseling Psychology from Central State University. Dr. Sadler has regional recognition for his particular expertise with reactive attachment disorders in individuals who have not been able to establish and maintain a healthy bond with their parents or others. Dr. Sadler is one of the founding members of the international organization, Association for Treatment and Training in The Attachment of Children, which has been in existence for 25 years.


He also specializes in providing individual and family counseling services for children, adolescents, and adults with various psychoemotional problems including depression, anxiety, obsessive-compulsive disorder, adjustment disorders. He also specializes in school related concerns.

Mark S. Sadler, Ph.D.

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