Staff at PCI Westlake Centers

Meet our wonderful staff!

Miriam Hamideh, Ph.D.

Licensed Clinical Psychologist, PSY 17320
Executive and Clinical Director

dr hamidehDr. Miriam Hamideh is a licensed clinical psychologist. She holds a Ph.D. in Clinical Psychology, a master-level certificate in Psychoanalytic Theory and Practice, and a Bachelor’s degree in Clinical Psychology. Having practiced psychology for over 20 years in diverse clinical settings, she has extensive experience with anxiety, depression, mood disorders, psychosomatic illness, relationship problems, dual-diagnoses, and substance abuse. Moreover, her psychodynamic therapeutic approach helps patients to understand how their thoughts and actions affect the way they feel. However, Dr. Hamideh also integrates developmental psychology, and includes cognitive-behavioral techniques, which help the learning of new skills to deal with immediate stressors and work toward deeper personal growth.

In addition, Dr. Hamideh has extensive experience with cultural diversity and acculturation problems. She speaks Portuguese and Spanish fluently among other languages, and has worked extensively with people from diverse cultural and religious backgrounds. Moreover, She taught graduate level university courses and still trains other professionals to become more culturally competent. Dr. Miriam Hamideh became a faculty member of the Psychology Graduate Program at California Lutheran University in 2002, where she taught for six years. She is currently a member of the Graduate Psychology Advisory Council for CLU.

Moreover, she was invited to assist with the creation of the Cultural Diversity committee of the Los Angeles County Psychological Association (LACPA) in 2005. Dr. Hamideh served as Board member, chairing and co-chairing the Diversity committee for 7 years until 2017. Finally, she is a member of both the California Psychological Association, and the American Psychological Association.

Joshua Diamond, M.D.

Board-Certified Addiction Specialist

Medical Director

Joshua Diamond is a renowned board-certified physician that specializes in Internal Medicine and Addiction Medicine. He graduated with dual bachelor degrees in Philosophy and Biology with honors from the University of Southern California. Dr. Diamond received his medical degree with Dean’s Recognition from the USC Keck School of Medicine. He then completed his post-graduate residency training in Internal Medicine at Cedars Sinai Medical Center. Dr. Diamond has also completed additional training in Biomedical Ethics, Health Informatics, and Addiction Medicine. He previously served as Medical Director for an acute inpatient detox unit and has an established private practice. Dr. Diamond’s approach to medicine carefully blends a strong evidence-based scientific approach to ensure high quality care coupled with an individualized and compassionate bedside manner to deliver a comprehensive and personalized healthcare experience.

Annie Zadori, Ph.D.

Registered Psychologist Assistant (PSB 94024455)

annieDr. Annie Zadori is a registered psychological assistant who specializes in the treatment of anxiety related disorders including Obsessive Compulsive Disorder, Phobias, Panic, Body Dysmorphic disorder and other mood related disorders. Dr. Zadori focuses on the integration of Cognitive Behavioral Therapies including Dialectical Behavioral Therapy (DBT), Exposure Response Prevention (ERP), and Habit Reversal. She strives to teach her patients the tools they will need to continue in their lives independently and confidently.

Dr. Zadori earned her Master’s and Doctorate in Clinical Psychology from Alliant University and remained in training with the Anxiety Disorder’s Clinic team at UCLA throughout her externship years to the present. Having been raised in culturally diverse settings has allowed Dr. Zadori to further appreciate acculturation processes and facilitate therapy with ethnic minorities. She is also fluent in Farsi and Armenian and a major part of her concentration in research has been focused on international approaches to mental health treatment.

Gregg Brock, LMFT.

Licensed Marriage and Family Therapist
img gregg brock
Gregg Brock is a Licensed Marriage and Family Therapist, and earned his Masters in Psychology from Phillips Graduate University, and his BA in Psychology from Antioch University.  Greggs training and internship was in a Post Modern program that focused on the use of Narrative Therapy, Solution Focused/Brief Therapy, Mindfulness and Collaborative Language Systems and Client Centered Therapy.  In addition, Gregg is a certified Batterers Intervention Counselor and lead weekly classes for the LA County Probation Department.  In training and post-graduate school he also gained extensive experience working with groups and individuals in the LA County Youth Probation camps.  He has a unique understanding of the impact of unchallenged anger and has developed skills to work with clients to better understand their experience of anger and the way it has harmed their life and those closest to them.

Gregg employs post modern techniques to support clients to expand their level of awareness and challenge the narrative they have maintained throughout their life.  For clients impacted from addiction, Gregg works with clients to recognize the opportunity they have created and to pursue new ways of navigating life that support their goals.


Nazanin Karandish, M.S.

Registered Psychologist’s Assistant


final I received my Bachelors of Science in Cognitive Psychology and Psychology of Social behaviors from the University of California, Irvine. I then obtained my Master’s in Clinical Psychology from California State University of Fullerton. Currently, I’m in the process of obtaining my Doctorate in Clinical Psychology at Alliant University.

During my previous training as a doctorate student I have worked with a diverse range of populations suffering from addiction, relationship difficulties and various mental health disorders. I have also worked as Marriage and Family Therapist intern providing individual, family, couple, and group therapy sessions. I am currently training under Dr. Hamideh. As a clinician I try to have an open mind and open heart for understanding my clients. I believe therapy is a collaborative work and I enjoy helping my clients live life to their fullest potential.


Efren Olmos, CADAC-II

Staff Addiction Specialist

olmosEfren is a Los Angeles native, and a core keep component to the PCI treatment staff. He has over 11 years of experience working in the field of addiction treatment for both non-profit and privately owned facilities in the San Fernando Valley and Malibu. He started his journey working in a facility for men at People in Progress, followed by two years working with men and women at Studio 12, then by establishing himself as the Program Coordinator for an all-women facility in Brentwood.

Efren, who was originally CAADE certified, has a B.A. in Psychology from Ryokan College’s School of Psychology. Moreover, his interactions with clients are based on the principle of compassionate communication. He works from a solution-based model, informed by evidence-based theories like motivational interviewing. He encourages the client to move from crisis to solutions through experiential discussion and targeted personal growth strategies focused on strengths, hopes, and dreams.

Wendy Basil, Ph.D.

Director of Vocational Rehabilitation Services
Registered Psychologist Assistant, PSB94022910

basilDr. Wendy Basil joined PCI Westlake Centers staff in 2014 under the supervision of Dr. Miriam Hamideh. In addition to offering psychotherapy, she has been a health educator, life coach and psycho-demographics research director. Moreover, Dr. Basil is also an adjunct faculty professor of psychology for California Lutheran University and the University of La Verne where she works with the military and teaches on Naval Base Ventura County at Pt. Mugu. She has extensive experience as both a therapist and educator working with all branches of military service.

Dr. Basil received her Ph.D. in Clinical Psychology from Pacifica Graduate Institute with an emphasis on attachment-based therapy. Her Master’s Degree, however, is in Communications Management from the Annenberg School at the University of Southern California, where she also taught undergraduates. Her undergraduate degree, also from the University of Southern California, focused on multicultural studies. Moreover, Dr. Basil is the co-author of SPINOLOGY (Depth Publishing, 2014) about Jungian-based media psychology, branding, and marketing. She regularly conducts workshops on a variety of issues including health and emotional wellness, motivation, therapeutic life skills and career development for clients, the general public and for professionals.

Patrick Lockwood Psy.D.

Licensed Clinical Psychologist, PSY 29866

Research & Education Coordinator

lockwoodDr. Patrick Lockwood grew up in a small Southern Missouri town, and eventually moved to Southern California to finish his doctorate of clinical psychology. Growing up in a community where addiction, economic struggles, and prejudice were common Dr. Lockwood feels a strong sense of empathy for how stuck, powerless, or unaccepted a person can feel. Since moving to Los Angeles, however, Dr. Lockwood has integrated his southern cultural experiences with his newer “big city” culture , and appreciates how culturally diverse, and just generally complex, relationships can be.

Dr. Lockwood is a published author, with his first book “The Fear Problem” discussing the neuroscience of our “fear” system. Fear instincts are being hijacked by political culture and technology…causing more arguments, fights, and social unrest. Dr. Lockwood has been published in a peer-reviewed journal, exploring neuroscience technology as it applies to the understanding and treatment of trauma disorders.   He is grateful to play a part in helping the staff at PCI Westlake Centers create programs that are driven by both science (i.e., research) and wellness.

Clinical Adjunct Staff

pci our team westlake

We also contract with a select few local clinicians who are experts. They provide various modalities, such as art therapy or anger management. We also are open to new and well-established sub-disciplines in psychotherapy. Through an extensive screening process we bring on the best professionals to compliment our full-time staff and interns.

Last but not least, meet our personal fitness consultant on staff.

Purusha Hickson has been teaching Hatha Yoga for over 35 years. His spiritual teacher is Swamini Turiyasangitanandaji, also known as Alice Coltrane. For years, he has taught Yoga for residential treatment centers for substance abuse.  Moreover, in addition to his yoga skills, his positive energy, spirituality, and personal communication skills have been very successful with PCI clients.  His classes are a unique blend of spirit, technique, and humor. Part of his teaching philosophy is based upon his very popular yoga seminar that first premiered at the San Francisco Zen Center: “Finding Balance: A joyful Exploration into the Depths and Boundaries of our Body and Mind.”