Board-Certified Neurosurgeon, Brain and Spine Surgery Specialist Delivering Objective Case Review, Standards-of-Care Analysis, and Courtroom-Tested Testimony.
Expert Witness Services Available Nationwide.
Dr. Day works with attorneys involved in medical malpractice, personal injury, wrongful death, and other medically complex matters, representing both plaintiff and defense, by delivering independent, evidence-driven neurosurgical medical analysis. His expertise supports counsel in assessing standards of care, causation, injury mechanisms, and damages in cases involving neurosurgical procedures, spinal surgery, traumatic brain and spinal injury, intracerebral hemorrhage, cerebrovascular disease, delayed diagnosis, brain trauma, brain aneurysm, spine trauma, spine tumor, spinal surgery, meningioma, brain surgery, intracerebral hemorrhage, cauda equina syndrome, brain tumor, pituitary tumor, acoustic neuroma, trigeminal neuralgia, whiplash and postoperative complications.
As a neurosurgeon expert witness, Dr. Day collaborates closely with legal teams to clarify the clinical decision-making process, distinguish expected risk from deviation, and identify medically meaningful issues early in litigation. He translates complex neurological concepts into clear, accurate explanations that can be effectively presented to opposing counsel, judges, and juries. Through comprehensive case review, well-supported expert reports, and credible deposition and trial testimony provided as part of his medical expert witness services, Dr. Day helps attorneys present complex medical issues with clarity, precision, and professional authority at every stage of the legal process.
Receive reliable assessments grounded in the latest spine and brain care knowledge from a neurosurgeon expert witness. Technical details are explained in terms anyone can understand, supporting your legal arguments.

Benefit from strong courtroom storytelling and nuanced layperson-friendly language from a neurosurgeon, spine surgery, and medical expert witness in the USA. Complex topics are made clear, empowering everyone in the courtroom to grasp what truly matters to your case.
Dr. Day provides attorneys with methodical, defensible medical opinions that stand up to close scrutiny. With more than three decades of hands-on experience, he brings the perspective of a neurosurgeon, spine surgeon, and medical expert witness in the USA, who understands how medical evidence must be evaluated and communicated in high-stakes legal settings. He reviews and presents complex clinical information with care, translating technical findings into clear, precise language for attorneys, judges, and juries. Dr. Day supports cases from initial screening through deposition, written opinions, and courtroom testimony, while collaborating with other medical professionals to ensure a complete and accurate understanding of the facts. His work reflects independent judgment grounded in clinical research, established neurosurgical guidelines, and years of experience as both a treating surgeon and an academic mentor.
Dr. J.D. Day, M.D., is a board-certified neurosurgeon and spine surgery specialist providing medical-legal support and case-focused insight for complex matters. We serve clients across the United States of America, including Florida,
New York, California, Texas, Pennsylvania, Illinois, New Jersey, Georgia, Ohio, and Michigan.