NAA Group

Independent, expert, second opinion forensic medicine and pathology case reviews


Medicolegal assessments of injuries and diseases of living or deceased infants, children and adults


The National Autopsy Assay (NAA) Group is a multinational group private practice based in the United States, Canada and Asia. The NAA Group is composed of forensic pathologists, consultant pathologists, forensic anthropologists, professional death investigators and others who are committed to providing high quality injury and death second opinion review services across the globe.

We provide evidence-based, scientifically defensible, peer-reviewed second opinion forensic medicine and pathology services.

Helping you understand complex medicolegal matters.

Our forensic pathologists have extensive experience providing assistance to criminal and civil attorneys, governmental oversight bodies, law enforcement agencies, family members and others. Our truth-seeking, evidence-based approach is non-partisan, and is rooted in modern science and medicine.

We are 100% independent


We offer expert second opinions on all aspects of forensic medicine and pathology, for both living and deceased individuals. We have particular interest and experience with:


Shaken baby syndrome and abusive head trauma

Impact head trauma; Alleged ``pure`` shaking trauma;
Retinal hemorrhages; Cervical spine injuries; Skull fractures;
``Short falls``; Lucid intervals, etc.

Child abuse & neglect

Burns and thermal injuries; Patterned injuries; Rib fractures;
Long bone fractures; Spanking injuries; Starvation; Dehydration;
Failure to provide necessaries of life; Blunt chest trauma;
Blunt abdominal trauma, etc.

Rape, sexual abuse, mutilation and torture

Chronic sexual abuse; Accidental genital trauma; Acute rape injuries;
Variations of normal genital anatomy; Vaginal trauma; Anal trauma;
Penile trauma; etc.

SUIDS / SUID / SUDC ``undetermined`` deaths

All forms of unexpected and apparently unexplained infant
and young child death; Suffocation; Accidental ``asphyxia``;
Bed sharing / co-sleeping / overlay; Wedging; etc.



Gunshot wounds; Stab wounds; Blunt trauma; thermal
injuries; ``Homicide by unspecified means``; Death penalty
cases; Post-conviction reviews/appeals; Writ of habeas
corpus, etc.

Elder abuse, neglect and injuries

Head trauma; Starvation; Dehydration; Dementia and
neurodegenerative disorders; Decubitus ulcers;
Nursing home death; Assisted suicide, etc.

Medical malpractice and misadventure

Neurosurgical deaths; Cardiology and cardiovascular surgery;
General surgery; Drug toxicity and drug errors; Obstetrical deaths
and perinatal demis, etc.

Insurance policy denials / appeals

Accidental and dismemberment policy denials; Insurance decision
appeals; Motor vehicle collisions; Accidental falls; Alcohol
dependence and abuse, etc.

Occupational injuries & diseases

Blunt trauma; Thermal injuries; Explosions and bombings;
Military and war time injuries; Mesothelioma;
Asbestosis and asbestos exposure, etc.

Rape, sexual abuse, mutilation and torture

Acute rape injuries; Prior / remote genital trauma;
Variations of normal genital anatomy; Vaginal trauma;
Anal trauma; Penile trauma, etc.

Wrongful death

Motor vehicle collisions; Workplace injuries; Interpersonal violence;
Drug abuse and drug toxicity; Medical malpractice, etc.

Drugs, alcohol and poisons

Prescription drugs; Alcohol; Cocaine; Heroin and opiate drugs;
Methamphetamine; Bath salts; GHB; MDMA; Marijuana;
Synthetic cannabinoids, etc.

Forensic Pathologists use many tools; autopsy is but one of them…

Forensic pathologists are the only physicians trained and certified to recognize, document and interpret the medicolegal significance of injuries and diseases, and their overlap. A forensic pathologist uses their deep knowledge of medicine and pathology to help solve legal problems in injury and death cases.  The “toolbox” of the forensic pathologist includes autopsy, but it is not limited by this one tool.

An expert forensic pathologist can entirely change the direction of your cases involving either living or deceased individuals.

Forensic Pathologists are important to society, and to the legal system.

You may have never worked with a forensic pathologist before. If you have, you likely know the critical role a competent forensic pathologist can play. Speak directly with an on-call forensic pathologist to learn more about how we can assist you solve medicolegal problems

We offer rates for both private and publicly funded cases; we routinely accept “appointed” and discounted Government-rate cases (prosecution and defense).

We strictly protect your case data.

The NAA Group is dedicated to protecting your critical case data. We have robust data security and compliance policies, including two-factor authentication, multiple tiers of physical, network and data security, and information handling and data privacy protocols in accordance with NIST standards. We are powered by the AbacusLaw case management platform, and Purview Cloud PACS Medical Imaging Solutions. We also take numerous steps to safeguard your physical files and evidence, including access control, intrusion detection and electronic surveillance, as well as various deterrence methods. We are fully compliant w/ both HIPAA (USA) and PIPEDA (Canada) rules and regulations.

Medicolegal News Service

The NAA Group is proud to introduce this new, semi-weekly medicolegal news service, to provide information about news and developments of relevance to the forensic medicine/pathology and legal communities.


We’re here to Help.

 1-800-985-5346, option 2,

West Coast Location

San Diego, CA

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Midwest Location

Evanston, Il

NAAG Midwest Location

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