Physician expertise for complex medicolegal questions.
Independent medical-record review, standard-of-care and causation analysis, and expert testimony for plaintiff and defense counsel nationwide.
Emergency Medicine · Medical Toxicology · Addiction Medicine
Expertise matched to the medical question.
Some matters fit squarely within one specialty. Others require analysis across emergency care, toxicology, and addiction medicine.
Emergency Medicine
Review of emergency evaluation, diagnosis, treatment, reassessment, monitoring and disposition.
Medical Toxicology
Overdose, poisoning, medication toxicity, drug interactions, alcohol, drug testing and exposure-related causation.
Addiction Medicine
Substance use disorders, opioid and alcohol-related care, withdrawal, buprenorphine, methadone and treatment questions.
Practical medical guidance for evaluating complex cases.
Attorney-focused resources translate toxicology and clinical medicine into the questions that matter during early case assessment.
Fentanyl Levels & Medical Causation
Questions attorneys should ask about toxicology results, tolerance, co-exposures, naloxone response and competing causes.
What a Positive Urine Drug Screen Can—and Cannot—Establish
Presumptive versus definitive testing, detection versus impairment, specimen validity and causation.
Clinicians first. Independent experts when the case calls for it.
Shaun D. Carstairs, MD, DFACMT, FACEP
Triple-board-certified physician whose background combines active clinical practice, academic teaching, research and military medical leadership.
David A. Tanen, MD, FAAEM, FACMT
Board-certified physician with experience spanning emergency medicine, medical toxicology, research, teaching and military medical service.
From initial screening through testimony.
Early assessment of specialty fit, scope and the medical questions presented.
Focused analysis of medical records and relevant scientific literature.
Independent analysis, written opinions, deposition and trial testimony.
A clear three-step process.
Describe the assignment
Share a short nonconfidential overview, jurisdiction, requested services and important deadlines.
Confirm fit & conflicts
We review suitability, conflicts, availability, scope and fees before accepting the matter.
Arrange the review
Record transfer, deliverables and timelines are established before substantive work begins.
Discuss your next case.
Request availability, CVs and fee schedules. Please do not send medical records or sensitive personal information through the public inquiry form.