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Availability last updated 09/18/2026
Clinical and health psychologist Elena Bagourdi, PhD, is the co-founder and program/clinical director of EXIS Youth. Located in West Los Angeles, California, Dr. Elena or Dr. B., as her clients call her, has expertise in the treatment of addictive behaviors, trauma, depression, anxiety, and personality disorders.
Since 1998, Dr. Elena has been working as a psychotherapist with individuals and their families. As the program/clinical director at EXIS Youth, Dr. Elena is highly invested in constantly expanding the therapeutic modalities used. She stays up-to-date and seeks out the most cutting-edge therapeutic approaches to incorporate into their existing program. This way, she can sustain the effectiveness of their program and further enrich its breadth.
Dr. Elena holds a PhD in clinical/health psychology, as well as a master’s in clinical psychology and organizational and economic psychology. She has a deep interest in her community, and she is on the board of local nonprofit organizations. Dr. Elena has also collaborated extensively with nonprofit organizations overseas. For instance, she co-led the World Health Organization (WHO)'s "mhGAP" pilot project in Greece on behalf of EPAPSY, a local nonprofit organization.
In addition to EXIS Youth, Dr. Elena has a successful private practice as a psychotherapist.
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Dr. Eleni Bagourdi, PhD
Psychologist
11545 W Olympic Blvd.
Los Angeles, CA 90025
Natalie Reinfeld is an Argentina native who moved to Miami, Florida in 1994. She started her career in mental health in 2002 as the assistant director for the AmeriCorps’ Community Integration Pilot Program. This experience provided her with a strong foundation for the serious mentally ill population.
Natalie completed her Bachelor of Science degree from Nova Southeastern University in 2003, her Master of Arts degree from Pepperdine University in 2005; and her Doctorate of Psychology degree with an emphasis in Health Psychology from California School of Professional Psychology in 2010. She received her California license in clinical psychology shortly thereafter. Natalie worked with a variety of populations ranging from children with autism, children and adult survivors of sexual trauma, adults diagnosed with co-occurring disorders, LGBTQ, and adults diagnosed with HIV/AIDS. All these populations were treated in outpatient, step-downs and/or inpatient settings. During the past 10 years,
her focus has been on the serious mentally ill population and the forensic cross-over. Throughout the years she has been leading a variety of teams; she oversaw 6 community programs with 70 staff, who they majority consider themselves employees with lived experience. The vast experience with interns of
all levels, teaching Master’s Doctorate degree level students, and leading a large team of individuals while maintaining a positive working culture led her to a new venture in the Industrial/Organization psychology realm of the field. She is currently the Director of Internships, Onboarding & Orientation, is a
content reviewer for the Zur Institute; and serves in the Intervention & Evaluation Committee and is an expert witness consultant for the California Board of Registered Nurses.
Natalia Kompel-Reinfeld, PSYD
Psychologist
355 Placentia Ave,
Suite 301
Newport Beach, CA 92663
Dr. Brandon Heimberg, PsyD
Psychologist
5000 Parkway Calabasas
Suite 218
Calabasas, CA 91302
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