Bay Area Health Psychology  
dr mark mosk photo Mark D. Mosk, PhD

Dr. Mosk provides customized professional services to help and guide individuals undergoing transitional periods in their lives, organizations experiencing significant changes, and parties involved in lawsuits. He ensures that clients navigate successfully through transformation and litigation processes by leveraging his unique and powerful blend of tools from clinical psychology, applied behavioral science and forensic analysis to offer distinct and proven methods to solve a variety of presenting challenges. He is committed to improving peoples' emotional well-being, helping organizations and businesses achieve their objectives, and accurately informing the court about each litigant's psychological health.

Therapy Services

As a highly trained clinician, he brings deep experience and a wealth of expertise and skills to treat a broad range of behavioral health disorders, including persons suffering with associated medical conditions and substance use. He uses only evidence-based treatment methods to ensure effective and efficient treatment outcomes that are durable and beneficial to his clients. He specializes in cognitive-behavioral therapies for adults and older adolescents with emotional difficulties such as PTSD, depression and anxiety. He also has expertise in ABA therapy and the treatment of autism-spectrum disorders.

He provides the tools you need to feel dramatically better and achieve more in your life, teaching and coaching you to improve and manage your attitude, emotions and behaviors. His evidence-based therapeutic methods have been shown effective and beneficial to clients for over 30 years, and he has helped thousands of clients relieve their symptoms and improve their performance. He particularly specializes in helping families cope with the stress and aftermath of divorce, as well as treating persons suffering from acute anxiety, PTSD and depression. His treatment approach enables you to live a more enjoyable, fulfilling and meaningful life, and gives you the skills to manage challenges in the future.

He helps families undergoing the stress of divorce and child custody battles. His research in the area of normative parenting in North America informs his advocacy for positive parenting and awareness of parental alienation in divorcing families. We are designing tactics for early identification of alienating behavior in parents pressing litigation in family court.

  • Areas of Therapeutic Focus for Adults
    • Aging Care
    • Anger Management
    • Anxiety
    • Chronic Fatigue
    • Concussion
    • Depression
    • Healthy Lifestyle
    • Insomina & Other Sleep Disorders
    • Job Stress
    • Marital Conflict & Dissatisfaction
    • OCD: Obsessive-Compulsive Disorder
    • Pain Management
    • PTSD: Post-Traumatic Stress Disorder
    • Retirement Transitioning
    • Trauma Recovery
  • Other Areas of Focus
    • Parenting Skills Training
    • Divorce Counseling (Pre- & Post-Decree)
    • Child Custody: Skills & Negotiation
    • ABA Therapy for ASD Spectrum Disorders


Dr. Mosk completed his PhD in clinical psychology at Western University in London, Canada in 1982. He began his career as a clinical and research psychologist at UCLA's Neuropsychiatric Institute and the UCLA Mental Health Clinical Research Center for Schizophrenia and Psychiatric Rehabilitation. He then developed and directed The Life Skills Center, a model treatment program serious mental illness for the California Department of Mental Health's psychiatric hospital system. He has lectured extensively and is a widely published author, whose works appear in the Journal of Clinical and Consulting Psychology, the Journal of Applied Behavior Analysis, and Hospital and Community Psychiatry, among others.

Dr. Mosk continues to develop the Parenting Profile Assessment System, a technology designed to help professionals organize their line of questioning about parenting activities and abilities, to simplify and structure the investigation process, uncover potential allegations by parents, maximize efficiency and derive behavioral data to supplement clinical findings. This approach, developed collaboratively with Dr. Feinstein, is intended to help provide a richer composite of information to educate and inform the court, using a common language understood by all parties involved in the litigation, especially to identify the presence of parental alienation in divorce matters.

He is proficient in the assessment and treatment of PTSD, including its impact on one's ability to function effectively, especially in the workplace. In addition to addressing the emotional aftermath of workplace violence and other mass traumas, he has conducted numerous threat assessments for businesses, and he has trained and educated many individuals and organizations on violence prevention tactics.

He and Dr. Feinstein also have developed, validated and copyrighted the Functional Capacity Assessment Profile (FCAP), a clinical decision-support tool used to explore an individual's ability to function effectively, to set treatment goals and to measure therapeutic progress.

Forensic Assessment

He conducts impartial, systematic, comprehensive and scientifically based mental health assessments for a variety of legal matters. His forensic examinations and expert opinions have been requested by legal professionals and court systems for more than three decades. While he concentrates in the areas of family law and workers' compensation law, he is adept in other legal areas as well. His investigations are done with great attention to detail but efficiently and cost-effectively. Through thoughtful and rational analyses and an ability to communicate effectively, he produces understandable and defensible reports with clear, data-supported opinions that competently answer even the most challenging medical-legal questions for the court.

As an evaluator and expert witness, Dr. Mosk has conducted over 1,000 comprehensive forensic and independent medical examinations for courts in California and Illinois. He has extensive experience performing court-ordered mental health evaluations in workers' compensation, child custody and disability matters, as well as competency exams in immigration cases.

Dr. Mosk has expertise in diagnosing and treating PTSD in employment related matters, and in the assessment of parenting capacity for family court. He has performed numerous violence risk assessments, employee fitness for duty evaluations and substance use screenings. His proficiencies include psychodiagnostic testing, functional behavior assessment, and deception detection procedures.

As a designated expert, Dr. Mosk has evaluated employees from dozens of Fortune 500 firms, including Boeing, Federal Express, Morgan Stanley Dean Witter, the National Football League, Ford Motor Company and Citibank.

Litigation Support

Dr. Mosk collaborates and provides you with an understanding, analysis and insights on case-specific mental health issues to help you design litigation strategies that maximize your success in court. He has been advising the legal community on a wide variety of psychological and behavioral issues since 1990. He particularly specializes in the review and critique of experts' forensic reports including the use of proper forensic procedures and psychological testing. His thorough clinical and forensic analyses together with his expert medical-legal advice ensures that you are optimally prepared to achieve your desired results in court.

He provides litigation support for attorneys and legal professionals, including reviewing and analyzing experts' work products, consulting on cross-examination strategies, reviewing records and preparing litigants to undergo forensic interviews. He is well-versed in forensic guidelines as well as standard assessment methods and protocols in forensic examinations, including the use of psychological testing. Dr. Mosk has lectured and consulted extensively on this subject. His deep background and experience in multiple areas of forensic practice, together with a well-rounded publication and presentation resume has made him a highly desired evaluator, instructor and expert witness.

Widely Published

Dr. Mosk is a widely published author, whose works appear in the Journal of Clinical and Consulting Psychology, the Journal of Applied Behavior Analysis, Hospital and Community Psychiatry, the Journal of Organizational Behavior Management, and the Behavior Therapist, among others.



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Fax: (855) 999-0220

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3860 West Naughton Ave.
Belmont, CA 94002

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