About Us

Our practice specializes in neuropsychological and forensic evaluations. We opened our doors in 2015 with the vision to change the landscape of forensic mental health service delivery. We approach our evaluation services by working collaboratively with our clients while embodying care, responsiveness, and excellence. In our evaluations, we examine links between the brain and behavior. The understanding of how you think, act, and how the brain works is what we use to diagnose a brain disorder. We will assess how problems with the brain may relate to problems at home, school, work, or with the law.


To change the landscape of forensic mental health service delivery, improving quality of life, and promoting safer communities.


To provide excellent services to our clients through the use of top-of-the-line standardized testing instruments, evidence-based research, and comprehensive reports.


  • Compassion
  • Accountability
  • Responsiveness
  • Excellence

Our Team

Ryan Vienna Headshot

Ryan A. Vienna, ML

Chief Executive Officer

Co-founder of Vienna Psychological Group, Inc., Mr. Vienna provides leadership, vision, and direction to the organization.  Mr. Vienna has over 15 years of experience working in law enforcement with a large agency in Los Angeles (LA) County.  In addition to his public service, Mr. Vienna has held positions in the private sector. Working with public, private, and non-profit organizations, Mr. Vienna has formed policy and implemented programs with executive-level officials to provide services to those in need.  Mr. Vienna is a visionary, bringing strong leadership and understanding to our organization.

Mr. Vienna holds a Master of Leadership degree from Sol Price School of Public Policy at the University of Southern California (USC).  Mr. Vienna graduated cum laude from the College of Business and Public Management at the University of La Verne with a Bachelor of Science in Organizational Management.  In addition to these achievements, Mr. Vienna graduated from Citrus College with honors earning an Associate of Science in the Administration of Justice, an Associate of Science in Biological and Physical Sciences and Mathematics, and an Associate of Arts in Fine and Performing Arts.

Headshot of Nicole Vienna

Dr. Nicole M. Vienna

Clinical Director & Forensic Psychologist

Co-founder and Clinical Director of Vienna Psychological Group, Inc., Dr. Vienna is a licensed psychologist (PSY26945) specializing in forensic and neuropsychological evaluations. She completed her Doctorate in Clinical Forensic Psychology at Alliant International University- California School of Forensic Studies. Additionally, she holds two master’s degrees in Forensic Science and Forensic Psychology.  She earned her bachelor’s degree at The University of Arizona.

Dr. Vienna began her career working with Tarzana Treatment Center in 2006, prior to obtaining her doctorate degree.  During the course of her doctorate training, she completed practicum rotations through College Hospital adult and adolescent inpatient psychiatric units and The Men’s Forensic Outpatient Program at Twin Towers Correctional Facility.  Dr. Vienna received her pre-doctoral resident training at the Los Angeles County Department of Mental Health (DMH) with the Jail Mental Health unit at Twin Towers Correctional Facility (TTCF), Century Regional Detention Facility (CRDF), and The Women’s Community Reintegration Services and Education Center (WCRSEC).  She completed her postdoctoral training through the Los Angeles County Department of Mental Health (DMH), with the Juvenile Justice Program at Challenger Memorial Center – Probation Camp and Barry J. Nirdoff Juvenile Hall.

Dr. Vienna has held additional assignments at Twin Towers Correctional Facility and the Inmate Reception Center (IRC) as a staff clinical psychologist where she performed initial psychiatric evaluations, housing determinations, and suicide risk assessments. Dr. Vienna has also worked on countywide psychiatric mobile response teams (PMRT) and mental evaluation teams (MET) with the Los Angeles County Sheriff’s Department, where she was partnered with a law enforcement officer in a police vehicle to provide crisis evaluations to individuals in psychiatric or emotional crisis. Dr. Vienna conducted numerous station briefings and behavioral health trainings for law enforcement personnel.

Dr. Vienna is appointed to the Los Angeles County Superior Court Expert Panel of Psychologists and the Los Angeles County Juvenile Delinquency Panel of Experts. She has also met Peace Officer Standards and Training (POST) continued professional experience (CPE) to conduct public safety pre-employment psychological evaluations. She is a member of the American Psychological Law Society (APLS), the National Academy of Neuropsychology (NAN), and the International Critical Incident Stress Foundation (ICISF).

In addition to her evaluation specialty, Dr. Vienna is certified in Eye Movement Desensitization Reprocessing (EMDR) and Critical Incident Stress Management (CCISM) by the University of Maryland, Baltimore County (UMBC)-Department of Emergency Health Services. She is the spouse of a sixteen-year veteran law enforcement officer and understands first-hand the unique stressors of shift work, pressures from organizational demands, public scrutiny, and the necessity to constantly adapt physically and psychologically to various job demands. Dr. Vienna is passionate about teaching the important tools for personal and professional wellness.

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Di Nguyen Headshot

Dr. Di Nguyen

Dr. Nguyen is a registered psychological assistant (PSB 94025402) working under the license of Dr. Vienna. She completed her doctorate in Clinical Psychology at The Wright Institute in Berkeley, CA. She earned two Master’s degrees in both Forensic Psychology and Clinical Psychology. Dr. Nguyen received her Bachelor’s degree in Forensic Psychology from John Jay College of Criminal Justice – City University of New York.

Dr. Nguyen has been trained at various clinical sites, including working with adults and children in community mental health settings and correctional/forensic settings. She is bilingual and has provided psychotherapy in Vietnamese. She also conducted psychosexual evaluations and provided mandated individual/group treatment at a Certified Sex Offender Treatment Program in San Francisco. She is trained in various risk, cognitive, and personality assessments.

Dr. Nguyen recently completed her pre-doctoral internship with the Los Angeles County Correctional Health Services, with rotations at the Century Regional Detention Center and the Forensic Inpatient Program at Twin Towers Correctional Facility. During her internship training, she provided inpatient treatment to severely mentally ill incarcerated individuals in a Lanterman-Petris-Short (LPS) designated hospital. She also completed intakes at the Inmate Reception Center, recommending appropriate housing and level of care. Dr. Nguyen also worked with incarcerated women who were deemed Felony Incompetent to Stand Trial. In addition to her forensic, correctional, and community mental health experience, she has been a suicide hotline counselor for over three years and is an advocate for suicide prevention, intervention, and postvention. Dr. Nguyen is also currently employed full-time with the County of Los Angeles and a per diem follow-up crisis counselor with the Suicide Prevention Center. She is only assigned to juvenile delinquency cases at this time.

Dr. Nguyen has active professional memberships with the American Psychology-Law Society and Psychologists in Public Service. Her forensic interests include competency to stand trial, Miranda issues, and risk assessment.

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Headshot of Marisa Canarick

Marisa Canarick

Office Administrator 

Marisa graduated with an Associate degree in Communications from Kingsborough Community College and a has Bachelor’s degree in Psychology with a focus on development across the lifespan from City University of New York (CUNY) – Brooklyn College. She is currently pursuing her Master of Science degree in Higher Education Administration, Leadership, and Student Success. She has vast experience in various administrative positions throughout her career.

Marisa is the most valuable person in the office. In this role, she manages the day-to-day operations of Vienna Psychological Group. She ensures all client needs are met, including billing and scheduling. She also oversees marketing for the practice. Marisa is task-orientated, policy-focused, support-centered, and has a team member mentality. She has a thorough understanding of mental health and legal terminology through her training at VPG. As such, she is well versed in dealing with court orders, retainers, fee schedules, and legal correspondence.

Please direct any general inquiries, scheduling, billing-related questions, and podcast questions to Marisa.

E-mail: support@vpg-corp.com