He is aclinical psychologist and expert witness that has over 35 years of experience in neuropsychology, forensic psychology, and cross-cultural psychological assessment, with more than 25 years of experience providing consultations, deposition testimony, and courtroom testimony in legal matters. Licensed as a psychologist in California, their work includes court-appointed evaluations in civil and criminal cases, with a particular focus on Vietnamese and other Asian-American individuals. The expert holds a Doctor of Philosophy in Clinical Psychology, a Master of Social Work in psychiatric social work, and a Bachelor of Arts in sociology and psychology. They are board certified across multiple forensic and psychological specialties, including the American Board of Psychological Specialties in Forensic Neuropsychology and Forensic Clinical Psychology, the American Board of Forensic Medicine, the American Board of Forensic Examiners, and the American Board of Medical Psychotherapy. Additional credentials include designation as a Qualified Medical Evaluator in psychology and neuropsychology and fellowship with the National Academy of Neuropsychology and the American College of Forensic Psychology. Professional affiliations include the American Psychological Association and the California Psychological Association.

Their areas of expertise include clinical and neuropsychological evaluation, psychological testing, and psychotherapy, as well as forensic psychological assessment in matters involving personal injury, workers’ compensation, and criminal proceedings. This includes work related to death penalty cases, sex-related offenses, post-conviction evaluations, and head injury assessments, along with evaluation of cultural and linguistic factors that may influence psychological findings in legal contexts. Professional experience includes long-standing private practice in clinical, forensic, and neuropsychology, along with prior involvement in program development and clinical services through public mental health agencies, community-based counseling and treatment organizations, and nonprofit social service institutions. Their work also includes participation on psychologist panels for state courts and government agencies involved in disability evaluation, rehabilitation, and social services, as well as faculty involvement with academic and clinical training programs.