Skip to main content
3101(d) never applies to
Experts

3101(d) never applies to

By Jason Tenenbaum 2 min read

Why Trust This Analysis

This article is part of our ongoing experts coverage, with 81 published articles analyzing experts 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.

CPLR 3101(d) Disclosure Rules Don’t Apply to Treating Physicians

Personal injury litigation often involves testimony from various medical professionals, but not all doctors are subject to the same pre-trial disclosure requirements. A recent Second Department decision provides a clear reminder that CPLR 3101(d) expert disclosure rules have specific limitations that trial courts must respect.

CPLR 3101(d) requires parties to provide advance notice when they intend to call retained experts at trial. However, this rule has never applied to treating physicians who examined or treated a plaintiff as part of their medical care. The distinction matters significantly in personal injury cases, where treating physicians often provide crucial testimony about causation and the extent of injuries.

Understanding when disclosure requirements apply becomes especially important when dealing with complex medical testimony or situations involving multiple medical opinions about injury causation.

Jason Tenenbaum’s Analysis:

Free Consultation · No Fee Unless We Win

Does this apply to your situation?

Every case is different. Get a free, confidential case review from an experienced attorney who can tell you exactly where you stand.

Duman v Scharf, 2020 NY Slip Op 04537 (2d Dept. 2020)

“At the damages phase of the trial, the defendants called as a witness one of the plaintiff’s treating physicians, who had examined the plaintiff following the accident and concluded in his medical report that “he symptoms that is experiencing in the right-sided extremity are likely related to previous stroke.” However, the Supreme Court ruled that the treating physician would be precluded from testifying on the issue of causation based on the defendants’ failure to provide the plaintiff with notice of such testimony in advance of trial pursuant to CPLR 3101(d). Counsel for the defendants provided the Supreme Court with precedent from this Court indicating that CPLR 3101(d) applied only to experts retained to give testimony at trial, and not to treating physicians. Nevertheless, despite noting a 1999 decision from this Court supporting the defendants’ position, the Supreme Court adhered to its determination to preclude the proposed testimony.”

LOL. reversed.

Key Takeaway

The Second Department reversed a trial court’s erroneous application of CPLR 3101(d) to a treating physician’s testimony. This decision reinforces established precedent that disclosure requirements for expert witnesses only apply to retained experts, not to physicians who treated the plaintiff as part of regular medical care.

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

Expert Testimony in New York Litigation

Expert testimony is essential in most personal injury and no-fault cases — from medical experts establishing causation and damages to accident reconstructionists and economic experts calculating lost earnings. New York courts apply specific rules governing expert qualifications, the foundation for expert opinions, the use of medical journals and treatises, and the sufficiency of expert evidence on summary judgment. These articles analyze the legal standards for expert testimony and practical strategies for presenting and challenging expert evidence.

81 published articles in Experts

Was this article helpful?

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.

If you need legal help with a experts matter, contact our office at (516) 750-0595 for a free consultation. We serve clients throughout Long Island (Huntington, Babylon, Islip, Brookhaven, Smithtown, Riverhead, Southampton, East Hampton), Nassau County (Hempstead, Garden City, Mineola, Great Neck, Manhasset, Freeport, Long Beach, Rockville Centre, Valley Stream, Westbury, Hicksville, Massapequa), Suffolk County (Hauppauge, Deer Park, Bay Shore, Central Islip, Patchogue, Brentwood), Queens, Brooklyn, Manhattan, the Bronx, Staten Island, and Westchester County. Prior results do not guarantee a similar outcome.

Filed under: Experts
Jason Tenenbaum, Personal Injury Attorney serving Long Island, Nassau County and Suffolk County

Reviewed & Verified By

Jason Tenenbaum, Esq.

Jason Tenenbaum is a personal injury attorney serving Long Island, Nassau & Suffolk Counties, and New York City. Admitted to practice in NY, NJ, FL, TX, GA, MI, and Federal courts, Jason is one of the few attorneys who writes his own appeals and tries his own cases. Since 2002, he has authored over 2,353 articles on no-fault insurance law, personal injury, and employment law — a resource other attorneys rely on to stay current on New York appellate decisions.

Education
Syracuse University College of Law
Experience
24+ Years
Articles
2,353+ Published
Licensed In
7 States + Federal

Free Consultation — No Upfront Fees

Injured on Long Island?
We Fight for What You Deserve.

Serving Nassau County, Suffolk County, and all of New York City. You pay nothing unless we win.

The Law Office of Jason Tenenbaum, P.C. has been fighting for the rights of injured New Yorkers since 2002. With over 24 years of experience handling personal injury, no-fault insurance, employment discrimination, and workers' compensation cases, Jason Tenenbaum brings the legal knowledge and courtroom experience your case demands. Every consultation is free and confidential, and we work on a contingency fee basis — meaning you pay absolutely nothing unless we recover compensation for you.

Available 24/7  ·  No fees unless you win  ·  Serving Long Island & NYC

Injured? Don't Wait.

Get Your Free Case Review Today

No fees unless we win — available 24/7 for emergencies.

Free Consultation Free Case Review