Leonard J. Weiss, MD Expert Witness
Curriculum Vitae


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Specialties & Experience of this Expert Witness

General Specialties:

Psychiatry and Addiction Psychiatry

Keywords/Search Terms:

Psychiatrist, Medical Negligence, Medical Malpractice, Brain Inj Med, Testamentary Capacity, Addiction, Alcoholism, DUI, Criminal Responsibility, Mental Disability, Malpractice, Psychotherapy, Confidentiality, Violence and Domestic Abuse.


Residency, Psychiatry, Michael Reese Hospital of the University of Chicago Medical School; Fellowship, Clinical Nutrition, Memorial Sloan-Kettering Cancer Center of New York Hospital, Cornell University Medical School; Medical Degree, Wayne State University School of Medicine, Detroit; BS in Mathematics , MIT

Years in Practice:


Additional Information

Dr. Weiss is a practicing Psychiatrist and Forensic Psychiatrist. Early in his career, he practiced Internal Medicine when he decided to pursue a deepening interest in Psychiatry, Addiction Psychiatry, and Forensic Psychiatry. Internal Medicine continues to play a part in treating psychiatric conditions. He has a clinical psychiatric practice in Austin, Texas. Dr. Weiss is uniquely qualified to address psychiatric conditions, as well as overlap with other medical conditions, symptoms, and treatment. Board-Certified in each of the following specialties: • Psychiatry, ABPN • Forensic Psychiatry, ABPN • Addiction Psychiatry, ABPN • Internal Medicine, ABIM • Brain Injury Medicine, ABIM • Nutrition, American Board of Nutrition (formerly) Dr. Weiss completed his Residency in Internal Medicine at the University of Michigan Henry Ford Hospital and Board-Certification in Internal Medicine. He completed his Residency in Psychiatry at the University of Chicago Michael Reese Hospital. He obtained Board-Certifications in (general) Psychiatry and subspecialties Forensic Psychiatry, Brain Injury Medicine, and Addiction Psychiatry. • 40+ years as a physician specializing in Psychiatry, Forensic Psychiatry, Addiction Psychiatry, and Internal Medicine • B.S. in Mathematics from MIT, Minor in Nutrition (Cambridge, MA) • M.D. from Wayne State University School of Medicine, (Detroit, MI) • Post-graduate training in Internal Medicine at Henry Ford Hospital of the University of Michigan (Detroit, MI) and Psychiatry at Michael Reese Hospital (Chicago, IL) • Nutrition fellowship at Memorial Sloan-Kettering Hospital (NY, NY) In addition to clinical Psychiatry, Dr. Weiss has served in leadership roles at addiction treatment and rehabilitation clinics, in-patient and out-patient. • Hospital and residential inpatient (detoxification, rehab) • Outpatient treatment Dr. Weiss has presented and published extensively about the psychiatric impact of: • Stress • Pain • Addiction, including substance abuse disorders • Psychosomatic medicine • Geriatric psychiatry • Dual diagnosis (overlap of psychiatric conditions and addiction) • Diseases and injuries of the brain