Dr. Crouppen is a Senior Faculty Member of the California Institute for Short-Term Dynamic Psychotherapy. He has served on the editorial board of the International Journal of Intensive Short-Term Dynamic Psychotherapy, in which he has authored articles on application of IS-TDP in treating individuals with serious symptom and character disturbances, including problems with substance abuse. Related to his supervisory and consultation practice, he has also served on the editorial board of The Clinical Supervisor: The Journal of Supervision in Psychotherapy and Mental Health.
For over 30 years, Dr. Crouppen has also developed, directed, and consulted to community mental health and residential treatment programs. He currently is the Senior Psychological Consultant with Stars Behavioral Health Group, with programs located in Southern and Northern California. His psychotherapy private practice is in Encino, California, where he specializes in IS-TDP. He provides psychotherapy training and supervision to mental health professionals through the Institute as well as through his private practice.