EXPERT WITNESS
Leslie Aaron Tsang, DO, QME
Board-Certified Psychiatrist
California Qualified Medical Evaluator
Dr. Leslie Aaron Tsang is a board-certified psychiatrist and California Qualified Medical Evaluator who provides independent psychiatric analysis in workers’ compensation and civil litigation matters. His professional background includes extensive experience in clinical psychiatry, behavioral medicine, psychopharmacology, physician education, and medical-legal evaluation.
Dr. Tsang has served as Founder and Medical Director of Berkeley Behavioral Health and Wellness, Consulting Psychiatrist for Circle Medical, and Adult Psychiatrist with Kaiser Permanente. His experience spans psychiatric assessment, treatment planning, behavioral medicine consultation, and interdisciplinary collaboration across a variety of clinical settings.
With experience serving as both a treating psychiatrist and medical educator, Dr. Tsang provides objective, evidence-based opinions supported by comprehensive record review, clinical evaluation, and established psychiatric standards of care. His evaluations emphasize clarity, impartiality, and thorough documentation.
Recognized for his contributions to behavioral medicine education and physician training, Dr. Tsang has supervised physicians, psychologists, and nurse practitioners while maintaining an active psychiatric practice informed by contemporary clinical standards.
Subspecialty Expertise
Dr. Tsang’s clinical background in psychiatry, behavioral medicine, and psychopharmacology provides expertise in the following areas:
His active psychiatric practice allows him to evaluate cases through the lens of current standards of care, contemporary treatment approaches, and real-world clinical decision-making.
Medical-Legal Services
Record Review
Comprehensive review of psychiatric records, behavioral health documentation, treatment history, and related medical records to support objective medical-legal analysis.
Independent Medical Evaluations (IME)
Objective psychiatric evaluations supported by detailed clinical assessment, record review, and evidence-based psychiatric analysis.
Comprehensive Expert Reports
Detailed written opinions addressing causation, apportionment, treatment recommendations, disability considerations, and psychiatric impairment issues.
Expert Testimony
Deposition and trial testimony involving psychiatric evaluation, behavioral health matters, causation analysis, and medical-legal issues.
Typical Matters Addressed
Dr. Tsang provides expert analysis in matters involving:
Academic & Professional Background
In addition to maintaining an active psychiatric practice, Dr. Tsang has contributed extensively to physician education, behavioral medicine training, and clinical supervision throughout his career.
His professional background includes service as Co-Director of Behavioral Medicine & Wellness, Core Teaching Faculty, Dissertation Advisory Committee Member, and Clinical Supervisor for physicians, psychologists, and nurse practitioners.
Dr. Tsang has presented extensively on behavioral medicine, psychopharmacology, mood and anxiety disorders, physician wellness, and psychiatric treatment strategies. His teaching and supervisory experience provides additional perspective when evaluating complex psychiatric and behavioral health matters.
This academic foundation supports opinions that are informed by both contemporary psychiatric practice and established behavioral health literature.
Approach to Expert Analysis
Dr. Tsang’s evaluations emphasize: