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Expert Witness Services
Independent Correctional Healthcare Expert Witness Services for Jail & Prison Litigation Nationwide
David Medical Services provides objective medical opinions, written expert reports, and testimony in matters involving alleged failures in correctional healthcare delivery.
We are retained by both plaintiff and defense counsel.
Role of the Correctional Healthcare Expert
Our role as medical experts is to:
- Review and interpret correctional healthcare records
- Evaluate whether care met accepted medical and correctional standards
- Explain medical issues clearly for counsel, courts, and juries
- Provide defensible, evidence-based opinions
We do not serve as advocacy experts. Our opinions are grounded in medicine, systems of care, and the clinical realities of custody environments.
Scope of Expert Witness Services
Expert witness engagements may include:
Comprehensive medical record review
Standard-of-care analysis
Causation opinions, when appropriate
Written expert reports prepared for litigation use
Deposition testimony
Trial testimony, when required
All work is performed with attention to clarity, consistency, and courtroom defensibility.
Primary Correctional Case Types
We regularly provide expert review in matters involving:
- Opioid and alcohol withdrawal deaths in custody
- Suicide in custody and behavioral health care failures
- Use-of-force injury and death cases
- General medical neglect or delayed care
- Medication lapses and continuity failures
- Emergency response and escalation breakdowns
For detailed descriptions, please see our Case Types pages.
v-MD™ Early Case Screening (Pre-Filing)
For matters that are not yet in active litigation, we offer the v-MD™ Early Case Screening service.
This paid, limited-scope review allows counsel to:
- Obtain early medical context
- Identify potential red flags or gaps in care
- Determine whether a case warrants full expert engagement
The v-MD™ service does not include a written report or testimony, and is not a substitute for expert witness work.
Board-Certified Correctional Medicine Physician
Ryan D. Herrington, MD, MPH
Dr. Ryan D. Herrington, MD, MPH, serves as the reviewing physician for expert witness matters, bringing clinical and executive experience in correctional healthcare systems and quality oversight.
View Dr. Herrington's Qualifications and what to expect when Working with Counsel.
Neutrality and Objectivity
We provide independent, evidence-based medical opinions for both sides of correctional litigation.
Our credibility depends on objectivity. We do not tailor opinions to desired legal outcomes, and we do not opine beyond appropriate medical scope.
This approach serves counsel, the court, and the integrity of the process.
Relationship to Non-Litigation Services
Expert witness services are distinct from our Facility & Systems Reviews, which are non-litigation, improvement-focused assessments for correctional organizations.
Organizations seeking healthcare systems review, patient safety assessment, or quality improvement support should view that service separately.
Getting Started
Most engagements begin with a brief introductory call to discuss:
- Case type and procedural posture
- Available records
- Timeline and urgency
- Scope of potential engagement
There is no obligation to retain following the call.
DMS Jail & Prison Healthcare Experts
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A division of David Medical Services, PLLC