Donn Warshow, Ph.D.  

(Psychologist, Trainer, Supervisor)

21241 Ventura Boulevard, Suite 251, Woodland Hills, CA 91364

Phone: (818) 703-5953  

Fax: (818) 704-1986


Dr. Warshow has been pivotal to the development of the DEFT Institute and its training programs

and contributes to teaching segments. In his private practice, he treats adults, adolescents, children and families in Woodland Hills, CA. He is an ADHD expert and his presentations to many groups of teachers, parents, pediatricians and internists have focused on current trends in ADHD treatment. He specializes in DEFT, ISTDP, SE and EMDR. At an attachment conference at UCLA, his video presentation showed work with a man who suffers with recurrent major depressive episodes. Dr. Warshow is a current member of LACPA, APA, IEDTA and the CA Society for ISTDP.

Bridget Quebodeaux, LMFT

(Faculty, Training Program Coordinator)

10780 Santa Monica Blvd. Ste. 470

Los Angeles, CA 90025

(310) 403-3540

Bridget is a Licensed Marriage and Family Therapist, a Feldenkrais practitioner and the DEFT Institute Training Program Coordinator. She has a private practice in West Los Angeles and has been working with people who suffer from chronic illnesses and unexplained pain as well as presenting to groups on topics related to movement, mindfulness and mental health since 1998.

Jon Rizk, LCSW

61 Virginia Ave.

Pasadena, CA 91107

(626) 644-1095

Jon Rizk is a Licensed Clinical Social Worker in CA. He has a private practice in Pasadena and specializes in treating addiction. He also works as the primary therapist at Ridgeview Ranch, a residential treatment center for addiction. Jon is also a fully trained EMDR therapist and brings over two decades of personal recovery experience to his work. He has been an active contributor to the DEFT Institute training group in Los Angeles since its inception and offers presentations on the fundamentals of the model throughout Los Angeles County. He is deeply passionate about sharing DEFT with other professionals because it is a collaborative, flexible, compassion oriented and strengths-based approach. In his remaining time Jon enjoys performing as professional musician.

Jon Frederickson, MSW

3000 Conn. Ave. N.W. #400

Washington, D.C. 20008


Founder, ISTDP Institute

Jon Frederickson, MSW, is the Founder of the ISTDP Training Institute and the co-chair of the ISTDP training program at the Washington School of Psychiatry; chair of the ISTDP Core Training for the Norwegian Society for ISTDP; and on the faculty of the Laboratorium Psykoeducaji in Warsaw and the Italian EDT Society. He is the author of Psychodynamic Psychotherapy: Learning to Listen from Multiple Perspectives and Co-Creating Change.