About Dr. Diane

Diane J. Weiss, MD, MPH

Psychiatry, Psychotherapy, and Psychopharmacology


Dr. Diane’s own journey began when, as a teenager, she wanted to understand the connections between the mind and the body, and how the art and science of medicine interrelate. With an extensive background in the humanities, particularly in languages and history, Dr. Diane first earned an undergraduate degree at UCLA, then a Master’s Degree in Public Health (M.P.H.), with a Population, Family and International Health major, at the UCLA School of Public Health.

Dr. Diane began medical school at the Universidad Autonoma de Guadalajara Escuela de Medicina in Mexico, and received her Doctor of Medicine degree from Boston University School of Medicine.

Dr. Diane completed her four-year psychiatry residency through the UCLA Neuropsychiatric Institute, based at the San Fernando Valley training program. She then became Board Certified in Psychiatry by the American Board of Psychiatry and Neurology, and, after many years, a Life Fellow of that Board.

Dr. Diane has been in solo private practice in the same office in Beverly Hills for 35 years. During that time, she has served as an Assistant Clinical Professor of Psychiatry at UCLA, as part of the Voluntary Clinical Faculty.

Dr. Diane became very interested in learning how to help patients achieve better control over their challenges, such as chronic pain and other conditions. This led her to seek the education necessary to become certified in clinical hypnosis through the Southern California Society for Clinical Hypnosis, a branch of the American Society of Clinical Hypnosis. Dr. Diane applies hypnotherapy to psychoanalysis, having studied with the American Academy of Medical Hypnoanalysts, such that hypnoanalysis is added to her toolkit.

Medical-Legal Expertise

During her 35 years in private practice, Dr. Weiss has provided consultation and litigation support as an expert witness in personal injury, employment law, and Workers’ Compensation cases. She has performed IMEs, and has been the treating psychiatrist / psychotherapist. Dr. Weiss’ experience is predominantly related to the psychiatric aspects of sexual, gender, or racial harassment; Posttraumatic Stress Disorder; anxiety; depression; and personality disorders.


  • MD, Boston University School of Medicine
  • MPH, UCLA School of Public Health
  • BA, University of California at Los Angeles

Years in Practice

39 years.

Number of times deposed / Testified in last 4 years

More than 30 times deposed.


  • Southern California Psychiatric Society
  • Psychiatric Clinical Faculty Association of the Semel Institute of the University of California at Los Angeles
  • American Psychiatric Association
  • California Society of Industrial Medical and Surgery
  • American Academy of Medical Hypnoanalysts
  • Southern California Society for Clinical Hypnosis
  • American Society of Clinical Hypnosis
  • Los Angeles County Medical Association California Medical Association
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Types of Care

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