Find an Expert Witness

Forensic, General & Medical
Expert Witnesses

Post-Traumatic Stress Disorder (PTSD) Expert Witnesses

Posttraumatic stress disorder (PTSD) expert witnesses are experts in the cluster of emotional symptoms that result from exposure to an extreme traumatic event. The qualified forensic (neuro)psychological expert witness utilizes systematic, objective, and empirically-based procedures to determine the validity of self-report, to rule out alternative explanations for symptoms, rule in indications of PTSD, and to assess the relative contributions of pre-existing conditions and other stressors to the current clinical presentation. These data provide a sound scientific basis for diagnosis and adjudication of PTSD cases in a variety of clinical, civil, criminal, and administrative settings.



Stephen M. Raffle, M.D. & Associates

Stephen M. Raffle, M.D. & Associates

California - Serving: All U.S states and abroad

Phone (415) 246-6129
Website https://psychiatristexpertwitness.com

Forensic Psychiatry, Psychiatric IME, Fitness for Duty/Threat Assessment Expert Witness

Stephen M. Raffle, M.D., board-certified in Forensic Psychiatry and (general) Psychiatry, has conducted over 5,000 psychiatric evaluations and testified in over 800 civil and criminal trials as an expert witness. He has conducted thousands of Fitness for Duty and Threat Assessments for employers. He is skilled at...

Sanjay Adhia, MD

Sanjay Adhia, MD

Texas - Serving: All States, and Guam, Puerto Rico, and the U.S. Virgin Islands

Phone (832) 746-5905
Website https://www.forensicpsychiatrynow.com/

Forensic Psychiatrist, Expert Witness & Forensic Consultant - Triple-Board Certified

Dr. Adhia is Triple Board-Certified in Psychiatry, Forensic Psychiatry, and Brain Injury Medicine, placing him among a select few physicians with this cross-over expertise.
He assesses complicating medical and psychiatric conditions, brain injuries, TBI, concussion, stroke, Dementia, and emotional distress, PTSD,...

Walter E. B. Sipe, MD

Walter E. B. Sipe, MD

California - Serving: All States

Phone (415) 483-2112
Website https://www.waltersipemd.com

Psychiatric Expert Witness

Dr. Sipe, Board Certified in Psychiatry and Pediatrics, has active outpatient psychotherapy and medication management practice serving adults and adolescents. He is on the clinical faculty at UCSF School of Medicine in the Departments of Psychiatry and Pediatrics, where he teaches and supervises medical students and...

Roger K. Pitman, M.D.

Roger K. Pitman, M.D.

Massachusetts - Serving: All States

Phone (617) 721-9147

Professor of Psychiatry, Harvard Medical School

Dr. Pitman is one of few experts to be board-certified in Psychiatry, Forensic Psychiatry, and Brain Injury Medicine. A Professor at Harvard Medical School (13 yrs full-time, now 7 years part-time), he is an internationally recognized researcher, teacher, clinician, and forensic expert. He has 52 years' experience...

Teo Ernst, Psy.D., ABPP (Board Certified Forensic Psychologist)

Teo Ernst, Psy.D., ABPP (Board Certified Forensic Psychologist)

California - Serving: All States

Phone (415) 385-9701
Website https://pfgexperts.org/

Pacific Forensic Group - Forensic Psychology, Neuropsychology & Neurology Expert Witnesses

Dr. Ernst is the Forensic Director of the Pacific Forensic Group, a specialized firm of eleven highly credentialed experts in Forensic Psychology, Neuropsychology and Neurology. Dr. Ernst specializes in PTSD, Mitigation and Resentencing, Testamentary Capacity and Undue Influence, and Employment Evaluations. He is one...

Alexandra Clarfield, PhD, QME

Alexandra Clarfield, PhD, QME

California - Serving: All States

Phone (707) 331-5389
Website https://alexandraclarfield.com

Psychologist - Expert Witness and Evaluations

Alexandra Clarfield, PhD is a licensed psychologist with more than 20 years of diverse experience. She provides consulting, psychological assessments and expert witness testimony for both plaintiff and defense counsel, in cases involving personal injury, employment issues and psychologist malpractice, as well as...

Comprehensive Neuropsychological Services, P.C.

Comprehensive Neuropsychological Services, P.C.

Connecticut - Serving: All States

Phone (203) 271-3809
Website clinicalneuropsych.com

Neuropsychology and Brain Injury Expert Witnesses

Comprehensive Neuropsychological Services, PC provides case review, neuropsychological examination, diagnosis, treatment, consultation, and forensic services for brain injury/trauma, psychological trauma, post-traumatic stress disorder, pain management, disability evaluation, pediatric psychology, and malingering. CNS...

Dr. Pia Quimson-Guevarra

Dr. Pia Quimson-Guevarra

Oregon - Serving: All States

Phone (503) 832-9293
Website https://psychexpertwitness.com

Forensic Psychiatrist, Expert Witness and Consultant

Dr. Pia Quimson-Guevarra is a physician dual Board-Certified in Psychiatry and Forensic Psychiatry by the American Board of Psychiatry and Neurology.
She has expertise in psychiatric issues in civil litigation, employment matters, probate, and criminal cases.
Dr. Quimson-Guevarra treats patients in her...

Pogos H. Voskanian, M.D.

Pogos H. Voskanian, M.D.

Pennsylvania - Serving: All States

Phone (215) 938-7227
Website www.forensic-psychiatrist.com/

General & Forensic Psychiatry Expert Witness

Pogos H. Voskanian, M.D. specializes in the application of scientific and clinical expertise to legal issues in legal contexts embracing civil, criminal, and correctional matters. He is a Clinical and Forensic Psychiatrist certified by the American Board of Psychiatry and Neurology, and is Associate Professor of...

W. Anthony Gerard, MD, FACEP, FAAFP

W. Anthony Gerard, MD, FACEP, FAAFP

Pennsylvania - Serving: All States

Phone (717) 926-7641
Website https://www.tonygerardmd.com

Emergency Medicine & Urgent Care Expert Witness

Dr. Gerard offers unique experience in both Emergency Medicine, Urgent Care and Family Medicine.
Full-time clinician working in both emergency medicine and urgent care and also assistant clinical professor. Board certified in Family Practice. As a family practice trained emergency physician, has a broad scope of...

Ellika McGuire MD PLLC

Ellika McGuire MD PLLC

Washington - Serving: All states, with a focus on the west coast.

Phone (206) 419-9814
Website https://ellikamcguiremd.com

Child and Adolescent Psychiatry Expert Witness and Clinician

Dr. McGuire is double board-certified in child and adolescent psychiatry and adult psychiatry. She has been a licensed physician for over a decade and a full-time psychiatrist for over seven years.
Dr. McGuire teaches and supervises child and adult psychiatrists-in-training as a Clinical Instructor in the...

David Contreras, PsyD, ABPP - Pacific Forensic Group

David Contreras, PsyD, ABPP - Pacific Forensic Group

California - Serving: California

Phone (415) 385-9701
Website https://pfgexperts.org

Board Certified Forensic Psychologist: Juvenile Forensic Psychological Assessment Expert Witness

Dr. Contreras specializes in Juvenile Forensic Psychological Assessment (Adolescent - Child), including Juvenile Competency to Stand Trial, Transfer/Waiver to Adult Court, Sexual Offenses, and Diagnostic or Dispositional Evaluations. Dr. Contreras is Board Certified in Forensic Psychology by the American Board of...

Joseph J. Lockhart, MA, PhD, ABPP - Pacific Forensic Group

Joseph J. Lockhart, MA, PhD, ABPP - Pacific Forensic Group

California - Serving: California

Phone (415) 385-9701
Website https://pfgexperts.org/

Board Certified Forensic Psychologist: Juvenile Competency & Immigration Evaluations Expert Witness

Dr. Lockhart is a Bilingual (Spanish-English) Board Certified Forensic Psychologist. He specializes in Immigration Evaluations, Juvenile and Adult Competency, and SVP consultation. Dr. Lockhart is one of fewer than 45 Board Certified forensic psychologists in California. He has been certified at the superior level in...

Maia Institute - Carolina A. Klein, M.D.

Maia Institute - Carolina A. Klein, M.D.

California - Serving: All States

Phone (202) 596-9585
Website maiainstitute.org

Forensic Psychiatrist, Psychiatric Evaluations and Expert Witness

Carolina A. Klein is triple board certified in Psychiatry and Neurology, Forensic Psychiatry, and Addiction Medicine. Dr. Klein is currently serving as the Associate Medical Director, Lead Psychiatrist for Advancement and Innovation, for the CA Department of State Hospitals. In her clinical practice, she offers...

Julie A. Armstrong, PsyD, RNCS

Julie A. Armstrong, PsyD, RNCS

California - Serving: Licensed in CA, AZ and IA. Available nationally and internationally.

Phone (310) 666-9190
Website https://psychologyexpertwitness.com

Psychology - Nursing Expert Witness - Adult and Child

Julie A. Armstrong, PsyD, RNCS, is a Psychologist and Clinical Nurse Specialist (psychiatric/mental health), using her more than 30 years of experience to provide psychological assessments and expert witness consulting in employment, personal injury, civil rights, disability and psychological & medical malpractice...

Medical Advisors, Inc. - Technical Network Consulting Service

Medical Advisors, Inc. - Technical Network Consulting Service

Pennsylvania - Serving: All States

Phone (800) 666-7045
Website https://techmedexperts.com

Medical, Technical & Scientific Expert Witnesses

Medical Advisors, Inc. ensures that your experts are available and fully prepared when you need them, where you need them to assist in case preparation, provide preliminary reports, evaluations and opinions, appear for interrogatories, depositions, courtroom testimony and more. Currently, many board certified medical...

Steven N. Shapse, Ph.D.

Steven N. Shapse, Ph.D.

Massachusetts - Serving: All States

Phone (781) 259-0283
Website shapse.com/wp

Forensic Psychology Expert Witness

Steven N. Shapse, Ph.D. is a Licensed Psychologist in the Commonwealth of Massachusetts. He has over 40 years experience in the field of psychology as both a clinician and teacher which includes over thirty years as a forensic expert, psychometrist and child custody evaluator. He regularly presents at state and...

Monica Argumedo, M.D.

Monica Argumedo, M.D.

Illinois - Serving: All States

Phone (847) 656-5349
Website https://maforensicpsych.com

Forensic Psychiatrist: Employment Litigation, Competency & Psychiatric Disability - Expert Witness

Monica Argumedo, M.D. has conducted forensic assessments and served as an expert witness for over a decade. She has testified as an Expert Witness in over 40 cases and conducted forensic assessment in many more that settled without need for a trial. She conducts Independent Medical Examinations, review of records,...

Williams Forensic Mental Health Services

Williams Forensic Mental Health Services

California - Serving: All States

Phone (888) 886-6589
Website www.williamspsychologicalservices.com/

Civil and Criminal Psychological Evaluations and Testimony - Expert Witness

Dr. Martin Williams is an experienced forensic psychologist who has never failed to qualify as an expert witness in court. He has testified in Federal and State Courts in criminal and civil matters, including emotional damage cases, as well as before Administrative Hearing Officers in immigration, security clearance...

Lisa Kalich, PsyD, ABPP (Board Certified Forensic Psychologist)

Lisa Kalich, PsyD, ABPP (Board Certified Forensic Psychologist)

California - Serving: California

Phone (415) 385-9701
Website https://pfgexperts.org/

Pacific Forensic Group - Forensic Psychology, Neuropsychology & Neurology Expert Witness

Dr. Lisa Kalich specializes in Sexual Offender and Violence Risk Assessment for Adults and Juveniles, Personal Injury; Parenting Capacity; Disability Determination; False Confession; and Child Witness Issues. Dr. Kalich is one of less 45 Board Certified forensic psychologists in California. After obtaining a B.A. in...






Find an Expert Witness