David Medical Services provides objective physician-led evaluations of medical care delivered in jails and prisons nationwide. We serve plaintiff and defense counsel, correctional administrators, and oversight entities through structured review grounded in clinical standards, patient safety principles, and systems-based analysis.
Our work includes medical review in matters involving alleged deliberate indifference, Section 1983 litigation, wrongful death, and correctional healthcare standards of care. Our physicians have deep expertise in correctional medicine and are informed by accepted frameworks including NCCHC standards.
Expert Witness Litigation Support for Prison & Jail Cases
We provide independent medical opinions in correctional healthcare litigation involving alleged deficiencies in care, including jail death and inmate death cases. Services include structured medical record review, standard-of-care analysis, causation assessment, written reports, deposition preparation, and testimony. Our role is to clarify the medical standard of care and provide objective opinions for counsel and the court.
Our physicians regularly evaluate matters involving:
- Withdrawal deaths in custody, including opioid and alcohol withdrawal
- Suicide in custody, including screening, risk stratification, and monitoring standards
- Injury or death following use of force, including medical causation and restraint-related events
Each review is conducted using a defined methodology and assessed against prevailing correctional healthcare standards and accepted clinical practice.
Learn more about our Correctional Healthcare Expert Witness Services.
Early Case Screening (v-MD™)
Not all matters require full expert retention.
For attorneys seeking preliminary medical assessment prior to formal engagement, we offer structured v-MD™ Early Case Screening. This process provides an objective physician evaluation of medical merit early in the litigation process, including review of potential deliberate indifference claims and standards-of-care concerns.
Board-Certified Correctional Medicine Physician
Ryan D. Herrington, MD, MPH
All correctional healthcare litigation reviews and testimony
are provided by Dr. Ryan D. Herrington, MD, MPH.
Double board-certified in:
General Preventive Medicine & Public Health
Addiction Medicine
With more than 10 years of clinical and executive correctional healthcare experience, including service as Medical Director across multiple state systems:
Maine • Vermont • Ohio • Washington
Extensive deposition experience, with courtroom testimony when needed.
View Dr. Herrington's Qualifications
Attorneys may also review expectations outlined in Working with Counsel.
Expert Witness Deliverables
We support counsel through:
- Comprehensive medical record review
- Standard-of-care and causation opinions
- Written expert reports prepared for litigation use
- Deposition testimony
- Trial testimony when appropriate
Reports are clearly organized and written to withstand cross-examination.
Retained by Plaintiff and Defense Counsel
David Medical Services provides independent, evidence-based medical opinions for both sides of correctional healthcare litigation.
We do not serve as advocacy experts. We provide medical opinions. Each matter is evaluated using a consistent, defensible review framework designed to ensure clarity, neutrality, and professional integrity. Our role is to provide objective analysis grounded in accepted standards of care and the clinical realities of custody settings.
For confidential inquiries, please Schedule an Introductory Call.
Facility & Systems Reviews (Non-Litigation)
In addition to litigation support, we provide independent Facility & Systems Reviews for correctional healthcare programs.
These evaluations may include:
- Withdrawal management protocols
- Suicide prevention systems
- Documentation and communication practices
- Sentinel event and mortality review
- Risk identification and mitigation strategy
- Quality and patient safety infrastructure
These systems reviews focus on patient safety, quality improvement, and preventable risk reduction. They are led by Dr. Patricia H. David, MD, MSPH, a former state correctional healthcare quality leader with formal patient safety training and oversight experience.
Schedule an Introductory Call
Attorneys may request a brief introductory call to discuss:
- Case scope and timeline
- Records review process
- Report delivery expectations
- Deposition or trial availability
David Medical Services, PLLC
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