License: Licensed Marriage and Family Therapist #35896
Co-Founder, Willow Tree
Timothy D. Stein LMFT, CSAT-S, CPTT-S, CCPS
Certified Sex Addiction Therapist – Supervisor
Certified Clinical Partner Specialist – Supervisor
Certified Partner Trauma Therapist – Supervisor
Timothy D. Stein is a senior clinician specializing in sex addiction and betrayal trauma recovery. Licensed since 1999 and trained directly under Dr. Patrick Carnes as a Certified Sex Addiction Therapist (CSAT), Tim integrates structured addiction treatment with partner trauma models to support individual sobriety and relational repair.
He provides individual, group, and couples therapy and is trained in advanced trauma modalities including Post Induction Therapy (PIT), EMDR, and Brainspotting. Tim serves as a Supervisor for CSAT and CPTT certification candidates and currently serves as Board President of The American Foundation for Addiction Research (AFAR), contributing to the advancement of research-informed addiction treatment.