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Forensic Psychiatry Expert Witness

Psychiatry Austin

Psychiatry Austin

3006 Bee Caves Road, Suite D-208
Austin, Texas 78746

Phone(512) 646-0880


► Contact Psychiatry Austin

Expert WitnessForensic ExpertLitigation SupportSpeaker
Dr. Weiss has been a physician for more than 40 years, first as an internist and then expanding his interests and excellence in Psychiatry, Forensic Psychiatry, and a specialty in Addiction Psychiatry and Addiction Medicine, all of which he has practiced for more than two decades.


Dr. Weiss conducts forensic evaluations and serves as an expert witness for fitness-for-duty/competency to practice evaluations (return to work) for Texas Professional Boards (Medical, Nursing, Pharmacy, Veterinary, and Dental). He also does Worker’s Compensation evaluations, and evaluations for Child Protective Services (CPS) and Federal Aviation Administrations (FAA) for pilots. He serves as an expert witness in the Travis County Prison System.

Dr. Weiss is highly qualified to conduct Forensic Psychiatric evaluations and testify about:

• Psychiatric evaluations including Not Guilty by Reason of Insanity (NGRI) and competency
• Addiction/Substance Abuse
• Pain Management without addictive medications, like Fentanyl or OxyContin. He has treated high-pain and chronic pain conditions in the musculoskeletal system. He has been an invited speaker about Fibromyalgia, Arthritis, and diseases of the elderly as an Internist and Psychiatrist. He has also spoken about the use of Alternative and Complementary medicine in medical and psychiatric practice.
• Lethal exposure to poisons, alcohol, and opioids—Dr. Weiss spent a year studying and working at the world-renowned Georgia Poison Center.
• Crossover conditions of Psychiatry and Internal Medicine (e.g., dementia versus pseudodementia due to depression, depression versus endocrinological conditions [hypothyroidism]; manic episode or anxiety disorder versus hyperthyroidism (reference
• Impact of Addiction on organ function (e.g., liver hepatitis or cirrhosis due to alcoholism, stroke due to cocaine or stimulants [amphetamine], kidney disease due to opioids [heroin nephropathy), etc.)

Litigation Support Services

Dr. Weiss has special training and experience in the application of psychiatric knowledge to legal issues, and works in areas where mental health and the legal system overlap. He offers objective evaluations and psychiatric consultation in a wide variety of legal matters, including expert testimony, as well as clinical work with perpetrators and victims.

Dr. Weiss provides expert opinions on mental health questions via written report, deposition, or courtroom testimony. He works with attorneys, courts, and other parties involved in actual or potential litigation. His research and assessment and his clinical practice cover areas such as:

Competency to stand trial (civil and criminal)
Competency to waive rights or legal representation
General Competency (to make a Will, consent to medical care, etc.)
Criminal Responsibility
Mental Disability
Involuntary Treatment
Correctional Psychiatry
Juvenile Justice
Violence and Abuse

Areas of Expertise

Additional Expertise:

Addictionology, Life Transitions, Obsessive-Compulsive Disorder (OCD), Psychosis, Psychosomatic / Body Mind Disorder, Neurocognitive Disorders, Mental Disability, Malpractice, Confidentiality, Involuntary Treatment, Correctional Psychiatry, Juvenile Justice, Violence and Abuse, Impulse Control Disorders, Sexual and Gender Identity Disorders, Addiction Evaluation and Treatment, Disease Consultancy.


Dr. Weiss' psychiatric residency training was at Michael Reese Hospital of the University of Chicago. After graduation, he started the dual diagnosis group psychotherapy program at Michael Reese. He also taught geriatric psychiatry while a member of the faculty of Rush Medical School and was published in the International Journal of Geriatric Psychiatry.

Prior to this, Dr. Weiss did bench research in nutrition while an undergraduate at MIT, followed by a straight medical internship at Metropolitan Hospital of NY Medical College, an internal medicine residency at Ford Hospital of the University of Michigan, and a Nutrition Fellowship at Memorial Sloan-Kettering Cancer Center of the University of Cornell and Columbia.

While in private practice, Dr. Weiss started the second largest outpatient aftercare program at St. Bernard’s Hospital in Chicago. He taught residents and medical students at Michael Reese Hospital and Chicago Osteopathic Hospital. In addition, from 1991 to 1999, Dr. Weiss did forensics work for the Illinois Department of Professional Regulation and Medical Disciplinary Board as well as the Drug Enforcement Administration.

Consulting Practice

All States.

Professional Experience

Dr. Weiss has been a physician for more than 40 years, first as an internist and then expanding his interests and excellence in Psychiatry, Forensic Psychiatry and a specialty in Addiction Psychiatry and Addiction Medicine, all of which he has practiced for more than 2 decades.

As an Addiction Medicine specialist, Dr. Weiss developed and served as Chief of a unique Outpatient Alcohol and Substance Abuse group therapy program at the University of Chicago’s Michael Reese Hospital in Chicago. Since moving to Austin, Texas, he has held the Medical Directorship for Outpatient Services at Austin Lakes Psychiatric Hospital and was Medical Director of Infinite Recovery Rehabilitation Drug and Alcohol Rehab & Treatment Center.


Dr. Weiss is licensed to practice medicine in Texas and Michigan.


Academic appointments, past and current, include Psychiatry and Addiction Medicine on the faculties of Chicago’s Rush Medical College at Rush University Medical Center hospital (10 years), Northwestern University Medical School and Midwestern University, and Texas A&M Health Sciences University in Austin.

American Academy of Psychiatry and the Law (AAPL)
American Psychiatric Association (APA)
American Medical Association (AMA)
American Society of Addiction Medicine (ASAM)
Austin Psychiatric Society


Dr. Weiss holds Board Certifications in Psychiatry, Addiction Psychiatry, and Forensic Psychiatry from the American Board of Psychiatry and Neurology (ABPN). He is a Diplomat of the American Board of Addiction Medicine (ABAM), formerly the American Society of Addiction Medicine (ASAM).

Dr. Weiss is also Board Certified in Nutrition and Internal Medicine.

Awards & Honors

Sigma Xi Research Society of North America, Massachusetts Institute Of Technology Chapter, 1975-present
Summer Research Fellowship, Massachusetts Institute of Technology, 1974
Honors Grade: Internal Medicine, Wayne State University Medical School, 1978-1979
Honors Grade: Radiology, Wayne State University Medical School, 1978-1979
Summer Psychiatry Clinical Fellowship, W.S.U. Medical School

Seminars & Training

Topic: Forensic Interviewing 2017 Travis County Mental Health Court Continuing Legal Education (CLE)
Topic: Forensic Interviewing 2016
Capacity for Justice 2016
Topic: DSM – 5 Revisions to the Autism Spectrum Diagnosis
Webb County (Texas) Head Start 2013
Topic: Therapeutic Options in the Day Program Treatment Setting 2012
Ridgeview Day Program
Topic: History of the Body/ Mind Relationship for:
The Ann Arbor Center for the Family 2006
Anchor Hospital and WellStar Behavioral Health Services 2005
Topic: Essential Principles in Treating the Dually Disordered for:
WellStar Behavioral Health Services CEU Accredited, Atlanta GA 2005
Topic: Addiction Diagnosis and Treatment for:
Georgia State University, Occupational Medicine, Graduate Program 2005
Topic: Medical Aspects of Psychiatric Assessments for:
Ridgeview Institute Nursing Staff 2005
Atlanta Medical Center Psychiatric Evaluation Team 2005
Topic: Fibromyalgia a Body/Mind Disease for:
Atlanta Medical Center Internal Medicine Residents 2004
Ridgeview Institute Quarterly Physician’s Staff Meeting
(CME Accredited) 2004
Kaiser Permanente CME Conference; Crescent Centre
and Cumberland Regional Clinics 2002
Topic: Stress and the Body/Mind Relationship for:
Chicago Osteopathic and Olympia Fields Family Medicine
Department: Sponsored by SmithKline Beecham, Inc. 1996
Rush North Shore Medical center Psychiatric Grand Rounds 1996
Glencoe Public Library 1996
Michael Reese Hospital Psychiatric Grand Rounds 1995
Chicago Osteopathic Hospital Psychiatric Grand Rounds 1995
Evanston Hospital Psychiatric Grand Rounds 1995
Topic: Spiritual Aspects of Healing-The Use of Meditation,
Prayer and Visualization in Clinical Practice for:
Evanston Public Library 1997
Skokie Public Library 1996
Rush North Medical Center 1996
Midwest University Osteopathic Medical Students 1996
Topic: Pain and Stress Management from a Psychiatric and
Alternative Medicine Perspective for:
Chicago Osteopathic and Olympia Fields Orthopedic and
Rheumatology Departments: Sponsored by SKB 1996
Topic: Overview of Preventive Medicine for:
Midwest University Osteopathic Medical Students 1996
Topic: Phobias and Other Anxiety Disorders for:
Lincolnwood Library Health Series 1996
Topic: Addictions
Chicago Osteopathic Medical Students 1996
Topic: Suggested Methods of Stress Reduction in Retirement for:
North Shore Mother’s Club 1996
North Shore Men’s Club 1996
Topic: Arthritis Pain Management for:
White Crane Wellness Center, Chicago, Illinois 1996
Topic: Unique Stresses Associated with the Aging Process for:
White Crane Wellness Center, Chicago, Illinois 1995
Topic: Diagnosing Depression/Anxiety in the Primary Care Setting for:
Little Co. of Mary Hospital, Sponsored by Eli Lily, Inc. 1997
Family Practice Department, Olympia Fields Osteopathic
Hospital; Sponsored by SKB, Inc. 1995
Topic: Dual Diagnosis Group Psychotherapy for:
Illinois Group Psychotherapy Society 1995
Olympia Fields Osteopathic Medical Center 1994
Topic: Psychiatry and Spiritual Emergency in Our Society Today for:
Transpersonal Psychology Network 1995
Topic: Unique Stresses of Early Motherhood for:
Highland Park Family Network Mother’s Group 1995


Stress and Its Taxing Effects on the Body, Illinois State Medical Society Journal: “Your Health Matters”: April 1999.
Addictions Update. Medical Update, Rush North Shore Physicians Journal: Spring, 1996.
Psychosocial Treatment of the Geropsychiatric Patient. International Journal of Geriatric Psychiatry: 8:95-100, 1993.
Toward Healing the Doctor-Patient Relationship. Publication of Mental Health Services, St. Francis Hospital of Evanston, 1:1 (Fall, 1990) Number 1, Fall, 1990.
The Doctor Guinea Pigs. (Book Review) Medical Tribune: July 18, 1984.
Doctors and Patients, Life and Death at a Bone Marrow Transplant Unit. (Book Review) Medical Tribune: June 20, 1984.
My Strange Addiction (Scotch Tape Eating Episode-“Cured!”) Television Show on The Learning Channel (TLC) airing February 12th, 2012.
Fox 7 News ( Interview on “Kratom Controversy” airing September 30, 2016.

Professional References

Available on Request.


Dr. Weiss graduated from Massachusetts Institute of Technology (MIT) in Mathematics, and from Wayne State University Medical School in his native city of Detroit. He then did residency training in Internal Medicine at the University of Michigan Henry Ford Hospital, and Psychiatry at Michael Reese Hospital in Chicago. Along the way, he did a Fellowship in Clinical Nutrition Memorial Sloan-Kettering Cancer Center in New York.

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