Key Takeaway
Court of Appeals clarifies CPLR 3101(d) expert witness disclosure requirements, timing objections, and trial court discretion in Rivera v Montefiore Medical Center.
This article is part of our ongoing evidence coverage, with 160 published articles analyzing evidence issues across New York State. Attorney Jason Tenenbaum brings 24+ years of hands-on experience to this analysis, drawing from his work on more than 1,000 appeals, over 100,000 no-fault cases, and recovery of over $100 million for clients throughout Nassau County, Suffolk County, Queens, Brooklyn, Manhattan, and the Bronx. For personalized legal advice about how these principles apply to your specific situation, contact our Long Island office at (516) 750-0595 for a free consultation.
Rivera v Montefiore Med. Ctr., 2016 NY Slip Op 06854 (2016)
Perhaps one of the most misunderstood and contrarily construed provisions of the CPLR is expert witness disclosure. The problem emanates from a reality that New York disallows expert witness depositions, unlike most states and the FRCP. The corrolary to the problem is that timing and substance issues of the disclosure become of paramount concern.
As a practitioner, there is nothing more obnoxious than an adversary who had at least 7-30 days to review the disclosure to state after a case is sent out for jury selection or a bench trial to object to the sufficiency of the disclosure. The time to object is prior to being sent out, and the proper mechanism is really through motion or order to show cause. This case solidifies proper procedure versus shot-gun procedure.
Of course, a party that gives a misleading disclosure will still pay the Piper his due.
(1) “CPLR 3101 (d) (1) (i) requires each party to “identify each person whom the party expects to call as an expert witness at trial and disclose in reasonable detail the subject matter on which each expert is expected to testify, the qualifications for each expert witness and a summary of the grounds for each expert’s opinion.” It was within the trial court’s discretion to deny plaintiff’s motion to preclude (see People v Carroll, 95 NY2d 375, 385 ). Trial courts possess broad discretion in their supervision of expert disclosure under CPLR 3101 (d) (1) (see Bernardis v Town of Islip, 95 AD3d 1050, 1050 ). “A determination regarding whether to preclude a party from introducing the testimony of an expert witness at trial based on the party’s failure to comply with 3101 (d) (1) (i) is left to the sound discretion of the court” (McGlauflin v Wadhwa, 265 AD2d 534, 534 ; see also Deandino v New York City Tr. Auth., 105 AD3d 801, 803 ; but see Saldivar v I.J. White Corp., 46 AD3d 660, 661 ).”
(2) Plaintiff made her motion mid-trial immediately prior to the expert’s testimony. Plaintiff argues that at the time of the expert exchange, she had no reason to object to the disclosure statement because the statement gave no indication that defendant would challenge plaintiff’s theory of decedent’s cause of death. Assuming defendant’s disclosure was deficient, such deficiency was readily apparent; the disclosure identified “causation” as a subject matter but did not provide any indication of a theory or basis for the expert’s opinion. This is not analogous to a situation in which a party’s disclosure was misleading or the trial testimony was inconsistent with the disclosure. Rather, the issue here was insufficiency.
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Legal Context
Why This Matters for Your Case
New York law is among the most complex and nuanced in the country, with distinct procedural rules, substantive doctrines, and court systems that differ significantly from other jurisdictions. The Civil Practice Law and Rules (CPLR) governs every stage of civil litigation, from service of process through trial and appeal. The Appellate Division, Appellate Term, and Court of Appeals create a rich and ever-evolving body of case law that practitioners must follow.
Attorney Jason Tenenbaum has practiced across these areas for over 24 years, writing more than 1,000 appellate briefs and publishing over 2,353 legal articles that attorneys and clients rely on for guidance. The analysis in this article reflects real courtroom experience — from motion practice in Civil Court and Supreme Court to oral arguments before the Appellate Division — and a deep understanding of how New York courts actually apply the law in practice.
About This Topic
Evidentiary Issues in New York Litigation
The rules of evidence determine what information a court or arbitrator may consider in deciding a case. In New York no-fault and personal injury practice, evidentiary issues arise constantly — from the admissibility of business records and medical reports to the foundation requirements for expert testimony and the application of hearsay exceptions. These articles examine how New York courts apply evidentiary rules in insurance and injury litigation, with practical guidance for building admissible evidence at every stage of a case.
160 published articles in Evidence
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Frequently Asked Questions
What types of evidence are important in no-fault and personal injury cases?
Key types of evidence include medical records and bills, police accident reports, diagnostic imaging (MRI, X-ray, CT scans), expert medical opinions, business records from insurance companies and providers, witness statements, photographs of injuries and the accident scene, and employment records for lost wage claims. The rules of evidence under New York CPLR and the Evidence Rules govern what is admissible in court proceedings.
What is the business records exception to hearsay in New York?
Under CPLR 4518(a), a business record is admissible if it was made in the regular course of business, it was the regular course of business to make such a record, and the record was made at or near the time of the event recorded. This exception is crucial in no-fault litigation because insurers' denial letters, claim logs, and peer review reports are often offered as business records. The foundation for the business record must be established through testimony or a certification.
What role does diagnostic imaging play as evidence in injury cases?
Diagnostic imaging — MRIs, CT scans, X-rays, and EMG/NCV studies — provides objective evidence of injuries such as herniated discs, fractures, ligament tears, and nerve damage. Courts and arbitrators give significant weight to imaging evidence because it is less subjective than physical examination findings. In serious injury threshold cases under §5102(d), imaging evidence corroborating clinical findings strengthens the plaintiff's case considerably.
How do New York courts handle surveillance evidence in personal injury cases?
Insurance companies frequently hire investigators to conduct video surveillance of plaintiffs to challenge injury claims. Under CPLR 3101(i), a party must disclose surveillance materials prior to trial, including films, photographs, and videotapes. Surveillance evidence can be powerful for impeachment if it contradicts the plaintiff's testimony about limitations. However, courts may preclude surveillance that was not properly disclosed or that is misleadingly edited.
How are expert witnesses used in New York personal injury cases?
Expert witnesses provide specialized opinion testimony that helps the court or jury understand complex issues like medical causation, injury severity, future care needs, economic losses, and engineering defects. Under New York law, expert testimony must be based on facts in evidence, the expert's professional knowledge, or a combination of both. The expert must be qualified by training, education, or experience in the relevant field. Expert disclosure requirements under CPLR 3101(d)(1)(i) require parties to identify their experts and provide detailed summaries before trial.
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About the Author
Jason Tenenbaum, Esq.
Jason Tenenbaum is the founding attorney of the Law Office of Jason Tenenbaum, P.C., headquartered at 326 Walt Whitman Road, Suite C, Huntington Station, New York 11746. With over 24 years of experience since founding the firm in 2002, Jason has written more than 1,000 appeals, handled over 100,000 no-fault insurance cases, and recovered over $100 million for clients across Long Island, Nassau County, Suffolk County, Queens, Brooklyn, Manhattan, the Bronx, and Staten Island. He is one of the few attorneys in the state who both writes his own appellate briefs and tries his own cases.
Jason is admitted to practice in New York, New Jersey, Florida, Texas, Georgia, and Michigan state courts, as well as multiple federal courts. His 2,353+ published legal articles analyzing New York case law, procedural developments, and litigation strategy make him one of the most prolific legal commentators in the state. He earned his Juris Doctor from Syracuse University College of Law.
Disclaimer: This article is published by the Law Office of Jason Tenenbaum, P.C. for informational and educational purposes only. It does not constitute legal advice, and no attorney-client relationship is formed by reading this content. The legal principles discussed may not apply to your specific situation, and the law may have changed since this article was last updated.
New York law varies by jurisdiction — court decisions in one Appellate Division department may not be followed in another, and local court rules in Nassau County Supreme Court differ from those in Suffolk County Supreme Court, Kings County Civil Court, or Queens County Supreme Court. The Appellate Division, Second Department (which covers Long Island, Brooklyn, Queens, and Staten Island) and the Appellate Term (which hears appeals from lower courts) each have distinct procedural requirements and precedents that affect litigation strategy.
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