What are the requirements for expert witnesses in Texas medical malpractice cases?
This question has been addressed in 2 Texas court opinions:
CHI ST. LUKE’S HEALTH-THE VINTAGE HOSPITAL v. RICHARD AURISANO
COA14 — January 27, 2026
In CHI St. Luke’s Health-The Vintage Hospital v. Aurisano, the Fourteenth Court of Appeals addressed the legal adequacy of expert reports under the Texas Medical Liability Act (TMLA). The hospital challenged a plaintiff's medical expert reports, arguing they were "conclusory" because they failed to explain the causal link between the hospital's alleged negligence and the patient's injuries, including a fall and bed sores. The court analyzed the reports using the "how and why" framework, which requires experts to provide a transparent analytical bridge showing how a specific breach of care was a substantial factor in causing the harm. The court held that because the expert failed to provide a factual explanation linking the hospital's conduct to the injuries—leaving the trial court to fill in the blanks with inferences—the reports were legally insufficient. The court reversed the trial court’s denial of the motion to dismiss and remanded the case.
Litigation Takeaway
“To survive a challenge, an expert report must provide an "analytical bridge" that explains the 'how and why' behind a conclusion. In family law—whether dealing with custody evaluations, capacity assessments, or business valuations—practitioners must ensure that experts do not simply state a result but instead provide a transparent, fact-based path from the breach or behavior to the specific outcome or recommendation.”
AOC TX, LLC d/b/a Angels of Care Pediatric Home Health v. Naomi Landeros and Carlos Silva, Individually and as Next Friend of O.S., Deceased Minor
COA08 — January 29, 2026
In this medical liability case involving the tragic death of a medically fragile infant, the parents sued a home health provider. The defendant challenged the qualifications of the parents' nurse and physician experts, arguing they were not 'practicing' at the time required by law. The El Paso Court of Appeals strictly interpreted Texas Civil Practice and Remedies Code § 74.402, finding that because the nurse had not practiced since 2021 and the doctor retired in 2019—while the claim arose in 2023—they failed the mandatory temporal requirements for experts. The court held the trial court abused its discretion in accepting the reports and reversed the ruling, though it remanded the case to allow the parents an opportunity to cure the technical deficiencies.
Litigation Takeaway
“Expert experience alone is insufficient if it is not contemporaneous with the case; to survive a motion to strike, an expert must be in active clinical practice or teaching at an accredited institution at the time the claim arose or when testimony is given. In family law cases involving medically fragile children or specialized needs, practitioners must scrutinize the 'active' status of experts to ensure their testimony is not disqualified for being out-of-date.”