Professional & Organizational Training

The Center for Optimal Living offers a variety of trainings and workshops on Integrative Harm Reduction Psychotherapy (IHRP) and other complementary techniques. We offer training in the United States and internationally, for individuals, groups and organizations.

Our training sessions are collaborative, making use of group discussion, interactive skill-building components and case studies to foster a deeper understanding of IHRP and promote its practice. Our training sessions can be delivered in formats ranging from half a day to five full days, depending on your needs. We tailor the content of training sessions to meet your specific requirements. We also provide ongoing or follow-up trainings, as well as ongoing trainings, consultation and supervision for the organizations we consult with. To find out more about the content, availability and cost of our training sessions, please contact us at or (+1) 212.213.8905 x2





Shifting the Addiction Paradigm: Gabor Maté, MD, Andrew Tatarsky, PhD and Ross Ellenhorn, PhD

May 31, 2018  |  9:30 am – 5:00 pm  |  The New School, 63 Fifth Avenue, Tishman Auditorium (U 100)

Organized by Ellenhorn and the Center for Optimal Living, this annual conference aims to hasten that shift by bringing together thought leaders, researchers and practitioners to present on new, innovative and liberating ways of approaching substance use and other habits, that are free from the yoke of the orthodoxy of disease. This year, our conference features prominent thinkers on this paradigm shift: Gabor Maté, MD and Andrew Tatarsky, PhD with opening remarks from RossEllenhorn, PhD. Find out more here.

Harm Reduction Psychotherapy Certificate Program

Center for Optimal Living (370 Lexington Ave, Suite 500, New York, NY)
This year-long intensive training program is designed for psychologists, psychiatrists, social workers, graduate students, CASACs, CASAC-Ts, LMHCs, psychiatric nurse practitioners, and those working in harm reduction settings to gain knowledge about the theory and application of integrative harm reduction psychotherapy (IHRP). We provide a comprehensive framework for conceptualizing and treating substance misuse and co-occurring disorders from an integrative harm reduction perspective. IHRP brings a harm reduction orientation to mental health and substance abuse treatment settings and a clinical treatment orientation to harm reduction settings.

Please note that this course is currently only available in-person. We have received many inquiries about an online version of the Harm Reduction Psychotherapy Certificate Program. Please add your name to this list if you are interested in participating in an online course in 2018. We will contact you after gauging overall interest and provide more details by Spring 2018.  To learn more about this program, please visit this page or contact Dr. Jenifer Talley at or 212.213.8905 x106.

Monthly Harm Reduction Psychotherapy Training Group

2018-19 dates TBA  |  Center for Optimal Living (370 Lexington Ave, Suite 500, New York, NY)

Dr. Andrew Tatarsky leads a monthly Training Group focused on Integrative Harm Reduction Psychotherapy (IHRP) for the full spectrum of risky and addictive behavior (substance use, sex, eating, shopping, gambling). The group welcomes mental health practitioners and substance use practitioners (e.g., Psychologists, Psychiatrists, Social Workers, Mental Health Counselors, CASACs) who have some knowledge and experience with harm reduction. This group is ideal for those who completed our 3-day training in IHRP and/or the Harm Reduction Psychotherapy Certificate Program or those with comparable harm reduction psychotherapy training and clinical experience.  If you would like to be notified when the 2018-19 application becomes available please submit your contact information.


View Our Trainings

Dr. Andrew Tatarsky and members of his team present a three-day training on the therapeutic principles and practice of Integrative Harm Reduction Psychotherapy for mental health and substance use treatment providers. Here participants share their experience of the training.

Dr. Andrew Tatarsky’s A Model of Complexity for Real World Substance Use Treatment, presented at the New York State Psychological Association’s Division of Addictions Conference 2015.