Background
Elisban Bazan sued Eric Gonser and Elite Fleet Hauling after an Elite Fleet semi-truck struck Bazan’s vehicle on Interstate 80. Elite Fleet admitted negligence caused the collision but disputed the cause, nature, and extent of Bazan’s claimed injuries, including whether the crash caused a mild traumatic brain injury (mTBI).
The district court limited testimony from Bazan’s treating physician, Dr. Demetrio Aguila, after finding that Bazan had not timely made the complete expert disclosures required by the court’s progression order. It excluded Aguila’s opinions on causation, permanency, and future medical costs, while permitting his treatment-related testimony. The court also allowed Elite Fleet’s neuropsychologist, Dr. Ryan Ernst, to testify that Bazan did not sustain an mTBI. A jury awarded Bazan $100,000, and the district court denied a new trial.
The Court’s Holding
The Nebraska Supreme Court affirmed. The district court acted within its discretion in enforcing its progression order, which required a complete written statement of each expert opinion and its basis by the disclosure deadline. Bazan’s earlier disclosures and medical records did not adequately explain the bases for Aguila’s causation, permanency, and future-cost opinions; Aguila’s later affidavit and disclosures were untimely, and labeling the later primary-case opinions as rebuttal did not cure that deficiency.
The court also held that the district court did not abuse its discretion by admitting Ernst’s testimony. A licensed psychologist specializing in neuropsychology may assess neuropsychological functioning and the psychological aspects of physical injury under Nebraska law. Ernst’s qualifications and specialization supported his opinion on whether Bazan sustained an mTBI; any conflict with Aguila’s opinion was for the jury to weigh.
Key Takeaways
- Trial courts may enforce progression-order expert-disclosure requirements by excluding undisclosed or inadequately disclosed testimony.
- Notice through records, vague disclosures, or deposition testimony does not necessarily satisfy an order requiring a complete written expert opinion and its basis.
- A plaintiff cannot recast opinions needed for the prima facie case as rebuttal expert disclosures merely because they contradict a defense expert.
- A qualified neuropsychologist may testify about whether a party sustained an mTBI when the opinion falls within the statutory scope of psychology practice.
Why It Matters
The decision underscores that expert-disclosure deadlines and content requirements are independently enforceable case-management tools. Litigants must provide timely, complete written disclosures rather than expect opponents to assemble the expert’s opinions from medical records and depositions.
It also confirms that expert qualification turns on the witness’s statutory scope of practice, training, and expertise—not solely on whether another licensed professional, such as a physician, offers a competing opinion.