Psychological Disability Evaluation Expert Witnesses: 12

Suzanne Dupée, MD, is a triple board certified Adult, Child, and Adolescent Forensic Psychiatrist specializing in Independent Medical Examinations (IME), Child Custody Evaluations, Fitness for Duty Evaluations, and expert witness for the California Medical, Veterinary, and Dental Boards.

Litigation Support - Dr. Dupée has an active forensic psychiatric practice specializing in family law, criminal law, dependency law, civil litigation and disability.  She has been designated as an expert in Federal Court, Family Court, Criminal Court, Dependency Court, Juvenile Delinquency and Civil Court in California, Arizona, and New York states.  She is an expert for several Los Angeles Superior Court panels:  Criminal, Child Custody Evaluator, Dependency Court and Juvenile Delinquency.  

Dr. Dupée has testified over 150 times in various courtrooms and has been deposed over 80 times.  She has worked on high profile cases and death penalty cases. She specializes in forensic evaluations of families in crisis and has completed 100s of Child Custody Evaluations and all forms of psychiatric evaluations for families in crisis.

Dr. Dupee has been retained in 100s of legal cases in civil, family law, criminal, disability and dependency cases. She has completed over 1,000 evaluations in various courts and for insurance companies and government boards. She has been retained by plaintiffs and defense counsel in civil cases.

Areas of Expertise:

Forensic Psychiatry Child and Adolescent Psychiatry Child Custody Solution-Focused Custody Evaluations Child Abuse Work-Related Disability Independent Medical Examinations Family Therapy

Post Traumatic Stress Disorder  Civil Psychiatric Evaluations Sexual Harassment Competency to Stand Trial Insanity Evaluations Adult Psychiatry Psychopharmacology Individual Psychotherapy

View Dr. Dupée's Consulting Profile.

Sanjay Adhia, MD, MRO, is triple-Board-Certified in Psychiatry, Brain Injury Medicine, and Forensic Psychiatry. In addition to forensic/expert witness practice, Dr. Adhia treats patients at renowned TIRR Memorial Hermann Hospital. His forensic practice focuses on the psychiatric impact of personal injury, medical malpractice, Multi-Plaintiff and Toxic Tort cases, testamentary capacity, undue influence and Dementia, TBI Brain injuries, competency, mental illness and complicating medical conditions. 

Dr. Adhia is among one of a select few Forensic Psychiatrists co-Board-Certified in Brain Injury Medicine. 

Dr. Adhia treats and opines about Traumatic Brain Injury (TBI) in litigation as it can result in psychiatric or neurocognitive impairments. He always assesses for Malingering.

In addition, Dr. Adhia works with Physicians for Human Rights to assess victims of kidnapping and false imprisonment, human trafficking, undue influence, physical and sexual abuse, rape, and fear of imminent death. 

In all populations, he assesses PTSD, Anxiety, Depressive Disorders, risk of suicide, and malingering. 

He is experienced in the treatment and impact of drug and alcohol abuse on decision-making. Dr. Adhia has also treated severe psychosis (Schizophrenia, hallucinations) and psychopathology. He formerly treated patients at a Maximum Security Prison and prison psychiatric hospital. 

Dr. Adhia’s findings consider complicating factors, e.g., emotional distress worsened by active physical and mental conditions, and pre-existing mental and physical illness (e.g. depression, PTSD, Dementia, Alzheimer's, medication.) 

As a physician, Dr. Adhia is uniquely qualified to review and examine and incorporate medical records and doctor reports in his reports. This is especially important in medical-malpractice & standard of care cases in treaters, inpatient, rehab, hospital, government, corrections and psychiatric hospitals. Dr. Adhia is skilled in these med-legal issues. 

He conducts Independent Medical Examinations, review of records, and reports findings to courts and attorneys. He is available to testify in civil, criminal, probate, Federal, Immigration, military, and administrative jurisdictions.

Kerry Mendes, M.D., Child, Adolescent and Adult Forensic Psychiatrist joined Dr. Adhia in 2022.

Violence Sexual abuse Malpractice and Standard of Care Alcohol and Drug Abuse Dementia and IDD Psychopharmacology Competency

PTSD Suicide Psychiatric Injury Will Contest Correctional Fitness for Duty Brain Injury

Ray S. Kim, Ph.D., is a Licensed Clinical Psychologist and Board Certified Forensic Psychologist. Dr. Kim is also a Board Registered Mental Illness / Substance Abuse Provider, Diplomate of the American Psychotherapy Association, Diplomate of the American Board of Psychological Specialties, Fellow of the American College of Forensic Examiners Institute, and Fellow of the American College of Advanced Practice Psychologists. 

Dr. Kim is currently the Director of Chicago Metropolitan Forensic Services at the Illinois Department of Human Services where he supervises a team of clinical psychologists and social workers who evaluate the placement of individuals into forensic facilities. He also serves as the Director of Clinical Training at Chicago Metropolitan Forensic Services where he developed and supervises a forensic practicum program which provides opportunities for specialized clinical training in the area of forensic psychology. 

Litigation Support - Dr. Kim has testified in over 50 cases in both criminal and civil court proceedings. He is sensitive to the nature of legal matters, and provides comprehensive, timely, and professional services. Dr. Kim's services are available to attorneys or defendants seeking a qualified evaluator to help support a case, or wishing to obtain a second opinion on a legal matter already in progress. He is skilled in utilizing the field of psychology's most up-to-date assessments to provide recommendations for prosecution or defense teams. 

Areas of Expertise:

• Psychological Evaluations
• Pre-Sentence Evaluations
• Sex Offender Evaluations
• Violence Risk Assessments
• Competency to Waive Miranda Rights
• Diminished Capacity
• Fitness for Duty Evaluations
• Substance Abuse Assessments
• Independent Medical Examinations (personal injury, workers' compensation, disability determination, malpractice)
• Detection of Malingering
• Federal Evaluations (competency to stand trial, criminal responsibility)

View Dr. Kim's Consulting Profile.

Dr. Pia Quimson-Guevarra is Board-Certified in Psychiatry and Forensic Psychiatry by the American Board of Psychiatry and Neurology. She opines about psychiatric issues in civil litigation, employment matters, and criminal cases. She has extensive experience with diagnosis and treatment of depression, anxiety, bipolar disorder, PTSD and other factors of emotional distress, both as a treating physician and in medical-legal cases. She serves as a forensic consultant, and/or disclosed Expert Witness. She assesses competency and undue influence,  standard of care, and mental status re judgment and clarity of thinking. Applies to civil, probate and CTST criminal matters including criminal responsibility. She is also experienced in treatment of psychotic disorders,  hallucinations, and delusions.

She opines about medication or drug impact on behavior.

Dr. Quimson-Guevarra conducts IMEs and review of medical and legal records. Her assessments are thorough and inform thoughtful and objective expert opinions issued by verbal and written report and testimony. She conducts Independent Medical Evaluations face-to-face in person and by video.

She is a Certified Forensic Evaluator in Oregon.

Dr. Quimson-Guevarra's clinical practice in Portland is Quimson Behavioral Health, providing psychiatric patient care, medication management, and psychotherapy, for patients who suffer from mental disorders, e.g., Anxiety, Depression, Bipolar Disord & PTSD and medication management. She continues to use her expertise in psychopharmacology to treat mental health conditions in the context of medicolegal medically complex cases.

Prior to expanding her private practice, she was a psychiatrist at Cascadia Behavioral Healthcare, in an Assertive Community Treatment (ACT) team, a method to deliver an intensive level of services to patients in the local community. Her patients consisted of individuals who suffer from severe and persistent mental illness.  At Cascadia, she also treated patients with a history that includes forensic medical-legal issues.

Previously, Dr. Quimson-Guevarra treated patients who suffered from anxiety, mood, and psychotic disorders at Cedar Hills Hospital, Multnomah County Detention Center, Washington County Jail, Snake River Correctional Institute, and the Portland Veteran's Administration. 

Dr. Quimson-Guevarra has served as a forensic consultant for the Washington County Mental Health Court in Oregon. She also has worked in the forensic evaluation service department at the Oregon State Hospital where she performed forensic evaluations.

Steven Gaskell, Psy.D. is a Forensic Psychologist, license eligible in all 50 states, and licened in Illinois, Georgia, Florida, and Kansas. He has years of extensive experience providing a variety of Forensic Psychological Evaluations and testifying regarding a variety of legal issues. Dr. Gaskell has completed more than 2000 Forensic Psychological Assessments including over 1000 pre-trial Competency to Stand Trial or Fitness to Stand Trial and Criminal Responsibility (Insanity Defense) psychological evaluations and he has provided expert testimony these issues on numerous occasions. Competency to Stand Trial/ Fitness to Stand Trial Criminal Responsibility or Sanity at the Time of the Offense Mitigating Factors Assessment Miranda Rights Issues (voluntariness, competency to confess, interrogative suggestibility) Malingering and Deception Sexual Assault Allegations Sex Offender Evaluations Sexually Violent Person Evaluations Pedophilia Paraphilias Future Likelihood of Sexual Re-Offense

Bankole A. Johnson, DSc, MD, MBChB, MPhil, FRCPsych, DFAPA, Dip-ABAM, Dip-ABDA, FACFEI, is a leading Neuroscientist and respected global authority in both Psychiatry and Neuroscience. His considerable education and expertise date to the 1970s, when he received his first general studies diploma.

Dr. Johnson earned his Medicinae Baccalaureum et Chirurgiae Baccalaureum (an M.D. equivalent) from the University of Glasgow in Scotland. He also received his UK Board Certification in Psychiatry from the Royal College of Psychiatrists, his Master of Philosophy in Neuropsychiatry at the University of London, and his Doctorate in Medicine from the University of Glasgow (coursework at the University of Oxford). He also received a Doctor of Science from the University of Glasgow, the highest doctoral degree a British university can award.

In addition to these qualifications, Dr. Johnson has also received United States certifications from the American College of Forensic Examiners Institute, the American Board of Psychiatry and Neurology, and the American Board of Addiction Medicine. 

Video Introduction: Neuroscience Expert Witness Dr. Bankole Johnson

Today, Bankole Johnson is a board-certified psychiatrist and physician throughout Europe and the United States. He is a respected collegiate authority in his field at a leading university in the United States. Dr. Johnson is a leading authority on the effects of abused drugs, including alcohol, on the brain and how this affects behavior, especially that related to the commission of a crime. He is a national expert on the treatment of opioid addiction as well as on assessing medical malpractice and insurance claims. Dr. Johnson is also a national expert on the effects of diseases of the brain, mental illness, mental disorders, and aberrant behaviors on testamentary capacity. He also is a national expert on assessing disability as a result of mental disorders, mental illness, and alcohol and drug abuse.

Litigation Support - Dr. Johnson provides expert witness services for cases involving all aspects of Addiction Medicine (e.g., alcohol, cocaine, heroin, and other opioid and substance abuse) as well as diseases of the brain and brain disorders that affect mental capacity. He is experienced as an expert witness for medical malpractice, capital cases, and major crimes. Dr. Johnson's services are available to attorneys for plaintiff and defendant and include medical record review, written reports, depositions, and trial testimony when needed.

Areas of Expertise:

Addiction Medicine Alcohol Brain Injury Disability Health Insurance

Medical Insurance Disability Insurance Medical Insurance Medical Malpractice Psychiatry

View Dr. Johnson's Consulting Profile.

Dr. Jane K. McNaught, PhD is a locally and nationally recognized Forensic Psychological Expert specializing in Post Traumatic Stress Disorder with adults and children. Over the course of her more than 35 years of practice, she has worked with both Defense and Plaintiff attorneys and has also been a Court appointed expert.

Dr. McNaught has administered more than 1700 psychological test batteries and testified on over 500 occasions as a forensic expert in the areas of: Civil, Criminal, and Family Law. She also provides trial consultation for attorneys. Dr. McNaught has  been qualified and testified as an expert in PTSD, for both the U.S. Army as well as the U.S. Navy. In addition she has testified as an expert in both District and Federal court. Dr. McNaught practices in the areas of Civil, Criminal, and Family Law cases involving trauma to both adults and children.

In the Civil area, Dr. McNaught is frequently hired as an expert when there are allegations of Emotional Damages involving Post Traumatic Stress Disorder (PTSD). Dr. McNaught has been hired in cases of alleged sexual misconduct within institutional settings such as: Schools, Churches, Treatment Centers, Hospitals, Residential Centers for the Handicapped, Jails and other Police alleged violations.

The following are cases where Dr. McNaugth has been an expert:  PTSD cases involving veterans;  injuries related to Motor Vehicle Injuries/Death; Dog Bite; Amputation; Burns; and Electrocution. Dr. McNaught has also been an expert in  Medical Malpractice Cases,Wrongful Death, and Infant Death cases. Employment Law Experience in cases  involving Age or Sexual Harassment where PTSD is alleged. 

In the Criminal area, Dr. McNaught is hired by both the Prosecution as well as Defense in cases involving Sexual Misconduct. She also conducts evaluations of Defendants in criminal cases where Underlying Psychological Conditions may impact sentencing. She has also  been obtained as an expert to evaluate the reliability of statements obtained from alleged victims of sexual assault. When doing so, Dr. McNaught addresses the following: Recantation, Memory Research, and the Standard of Care for Interviewing Victims of Sexual Assault. 

In the area of Family Law, Dr. McNaught specializes in High Conflict Divorce and and provides consultation in issues related to:  Relocation; Endangerment; Factitious Disorder by Proxy; Parental Capacity; and Parental Alienation. Dr. McNaught is also frequently obtained as an expert to critique other evaluator's reports.

View Dr. McNaught's Consulting Profile.

Charles H. Heller, PhD, is a Forensic Psychology Expert with over 35 years of experience in his field. Dr. Heller is currently on staff at Rutgers University Biomedical Health Service, specializing in criminal behavior and risk assessment. He also serves as a forensic psychologist consultant for the Rockland County (NY) court evaluation service, where he has performed hundreds of child custody, as well as criminal competency and child abuse/neglect evaluations.

Litigation Support - Dr. Heller specializes in conducting custody evaluations, providing the review and analysis of potentially mitigating circumstances in connection with criminal behavior, and providing consultation to attorneys regarding civil litigation. He has extensive court experience in Civil, Criminal, and Family Court cases. Dr. Heller is a fully vetted and approved forensic psychologist for the NJ Office of the Public Defender as well as other Public Defender offices. (Federal Public Defender, Legal Aid in Manhattan, Bronx, Kings, and the NYC assigned counsel program). He often travels throughout the US as a forensic consultant in important court cases including military Court Martials, death row assessment, sexual abuse, assault, and multiple homicides. He is well-known and respected among his colleagues as a clinician and as a forensic psychologist/expert witness.

Civil Litigation - (Emotional and Mental Injury) - Dr. Heller is retained by both plaintiff and defense counsel to assess plaintiffs for emotional and mental injury. He takes an unbiased, ethical approach to assessments and is not "a hired gun." He is an expert in objective evaluations that assess the probability the plaintiff is suffering PTSD, other emotional injuries, or if there is an exaggeration of symptoms based upon psychological testing and other data. He has expertise in cases that involve group home / residential schools, provider negligence, and assaults.

Criminal Litigation - Dr. Heller is experienced in providing successful rebuttal testimony explaining the scientific issues related to the problems of validity, reliability, and usefulness of "Syndrome evidence" such as "Child Sexual Abuse Accommodation Syndrome" and "Rape Trauma Syndrome." He testifies in child sexual abuse cases and explains research related to false allegations, recantations, memory, suggestibility, child testimony, interview protocols, and "Believed-In Imaginings" in children and adults. He has expertise in domestic violence and has assessed women who have been victims of intimate partner violence and "Battered Women Syndrome" that contributed to homicides, assaults, and other felonies by the victims of abuse.

Manhattan: (Mailing Address) Two Park Avenue, 20th Floor New York, NY 10016 Phone: 212-880-3789 Alt. Phone: 845-354-0535 Fax: 845-354-1287

New Jersey: (Alternate Mailing Address 140 East Ridgewood Avenue South Tower, Suite 415 Paramus, NJ 07652 Phone: 201-262-0331 Fax: 845-354-1287

View Dr. Heller's Consulting Profile.

Gregory P. Brown, MD, is a is a Diplomate of the American Board of Psychiatry and Neurology and specializes in the fields of adult Psychiatry and Forensic Psychiatry. His private office is dedicated to the practice of Forensic Psychiatry, and includes evaluations for matters in civil court, criminal court, family court, and independent psychiatric evaluations.

Dr. Brown is an Associate Professor of Psychiatry, and the Residency Training Program Director, at the University of Nevada Las Vegas School of Medicine. He founded the Psychiatry Residency Training Program, and has been the Residency Training Director since the time of the first entering class in 2004, under the UNRSOM.

Litigation Support - Dr. Brown has extensive experience in medico-legal work. As a Board Certified Forensic Psychiatrist, he has worked in diverse areas of this subspecialty of psychiatry. Dr. Brown offers litigations support services to attorneys for Plaintiff and Defendant.

Services include Disability Evaluations, Estate Planning Capacity Evaluations, Independent Psychiatric Evaluations, Medical Board Evaluations, Fitness for Duty Evaluations, Department of Energy Fitness Evaluations, Social Security Appeals Record Reviews, and Independent File Reviews for Medical Necessity and for Disability Claims.

Forensic Experience Includes:

• Criminal Court Evaluations - Competence to Stand Trial, Assessment of Criminal Responsibility, NGRI Assessments
• Civil Court Evaluations - Personal Injury with Psychiatric symptoms, Brain Injury with Psychiatric symptoms, Malpractice related questions
• Family Court Evaluations - Involuntary Commitment, Guardianship, Testamentary Capacity, Undue Influence, Contractual Capacity, Fitness to Parent, Child Custody
• Third Party Forensic Evaluations - Fitness for Duty, Return to Work, Disability, ADA Accommodations, Medical Necessity, Independent Psychiatric Evaluations

Linnda Durre', Ph.D., Licensed Psychotherapist, (FL License #MH6058) is an expert witness, psychotherapist, family counselor, intern supervisor, international speaker, corporate trainer, author, business consultant, adjunct college professor, and a magazine, Internet, and newspaper columnist. Her four areas of court expertise are Family Law, Personal Injury Law, Employment Law, and Criminal Law. 

Litigation Support: With over 49 years of experience, she consults to attorneys and has been qualified as an expert witness in 12 states - NY, CA, FL, AL, CT, AR, AZ, TN, WA, IA, OH, GA - in the areas of Personal Injury, PTSD, Family and Couples Counseling, Divorce, Child Custody, Relocation, Drug and Alcohol Counseling, Sexual Harassment, Sexual Abuse by Psychotherapists, as well as Age, Race, Gender, and Sexual Orientation Discrimination. Her 400-page doctoral dissertation and research in the latter area was cited to pass legislation in several states. 

Dr. Durre' has hosted and produced four radio shows, two of which were call-in advice shows - "The Dr. Linnda Durre' Show" on WDBO in Orlando (a Cox station) and "Let's Talk with Dr. Linnda Durre' on an NPR station in New York, and two radio interview shows. Her last show was a daily hour-long podcast, entitled, "Linnda Durre' Interviews" Dr. Linnda Durre' has hosted and produced two call-in advice TV shows, including being selected in a national search of 200 applicants, to host, "Ask The Family Therapist," on America's Health Network (AHN), which was associated with Mayo Clinic and each show aired daily for two hours from Universal Studios Orlando. She was vetted by Mayo Clinic and America's Health Network.

She has appeared on Oprah, 60 Minutes, O'Reilly (twice), Today Show, Good Morning America, Canada AM, Daytime, Donahue (twice), Sally Jessy Raphael, People Are Talking, Home Show, Hour Magazine, Home and Family Show, Disney Channel, and the local and/or national news on NPR, PBS, CBS, ABC, NBC, CW, and Fox.

Dr. Durre' has been interviewed, cited, and/or quoted by the NY Times, LA Times, Forbes, WSJ, IBD, Business Week, SF Chronicle & Examiner, Toronto Globe & Mail, Albany Times Union, Atlanta Journal Constitution, Orlando Business Journal, Orlando Sentinel, Parade Magazine, Alternative Medicine Magazine, CNN Online, Washington Parent Magazine, Screen Actor Magazine, Florida Magazine, Pasadena Star News, Orlando Magazine, Women's Health Magazine, and others.

View Linnda Durre's Consulting Profile.

Dr. Kenneth J. Manges is a Vocational and Psychological Expert with over 30 years of experience. He is certified in Forensic Psychology, Emotional Trauma, Wage Loss, Disability, and Crisis Intervention and is recognized as an Expert in Post Traumatic Stress Disorder.

Dr. Manges is qualified to testify in both federal and state courts and has provided expert opinion testimony for plaintiff and defense.



Specialties Include:

• Cognitive Behavior Therapy
• Post Traumatic Stress Disorder Evaluation & Treatment
• Forensic Testimony (Consultation, Evaluation Treatment Following Trauma or Injury)

Expert Testimony Experience:

Mental Health Evaluations Mental Health Malpractice Damages Personal Injury Consultation Wrongful Death Damages Medical Malpractice Damages Diminished Capacity Defense Chronic Pain Syndrome

Insanity Defense Vocational Evaluation Family Law / Spousal Support Railroad / FELA Maritime / Jones Act Fitness for Duty Evaluations Post Traumatic Stress Disorder

Monica M. Argumedo, MD, is a Board-Certified Forensic and Clinical Psychiatrist (ABPN). Dr. Argumedo has testified about her forensic opinions in more than 40 cases in open court. In psychiatric practice for more than 15 years, Dr. Argumedo teaches at Rush University Medical School/Rush University Medical Center as Assistant Professor in Psychiatry. She teaches psychiatry residents in topics related to psychiatry and the law, and psychiatry in medicine. She also interviews prospective medical students through her role on the Medical Admissions Committee.

Dr. Argumedo works with Employers in cases where mental health/psychiatric concerns about an employee require an objective and unbiased Fitness for Duty Evaluation and report. She also consults in employment matters and litigation and serves as a disclosed expert witness. Her work addresses fitness for duty (FFD) in a litigated environment, Wrongful Termination, and Psychiatric Disability. Additional experience includes FFD of peace officers and first responders.

Services - Forensic Psychiatry, Medico-Legal evaluations, medical complications, review of records, written reports, deposition testimony, trial testimony, consultation to attorneys addressing psychiatric issues relevant in a case, opposing counsel expert reports or expert qualifications, assisting with cross-examination questions, and lines of inquiry.

Areas of Expertise:

Fitness for Duty Wrongful Termination Psychiatric Disability Depression Anxiety PTSD Competency Dementia Cognitive Behavior Emotional Distress

Pain and Suffering Standard of Care Institutional Care Medical Malpractice Discrimination Harassment Hostile Workplace Pre-employment Evaluation Security-sensitive Security Clearance