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It did not work the second time around
Causation

It did not work the second time around

By Jason Tenenbaum 4 min read

Key Takeaway

Interboro v Johnson required factual proof for a default judgment. Jason's 2014 comparisons now include the later reversal of the Arnica ruling.

This article is part of our ongoing causation coverage, with 346 published articles analyzing causation 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.

Interboro Insurance Co. v Johnson, 123 AD3d 667 (2014) concerned a default judgment. The insurer sought a declaration against three nonappearing providers that their claims were unrelated to the accident. The Second Department upheld denial because the insurer had not supplied sufficient facts supporting that requested declaration.

Legal Update (September 2026): The 2014 Arnica ruling cited below was reversed by the First Department in 2016; the insurer received summary judgment after the provider failed to answer objective medical findings, as Jason’s later account explains.

Last reviewed: September 2026.

What the published decisions establish

A default does not dispense with the proof required by CPLR 3215(f). Johnson did not decide a summary-judgment motion or award payment to the providers. In Mercury Casualty v Surgical Center at Milburn, the court reached the opposite default-judgment result on the record before it. Neither short opinion reproduces the radiology affidavits Jason compared below.

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Two other comparisons need qualification. Koyachman allowed a different CPLR 308 service method after diligent attempts at personal delivery; it did not authorize ignoring an order to show cause. Bronx Radiology rejected a generalized low-impact study that lacked a review of the patient’s injuries. Andromeda involved photographs, medical records and examination-under-oath transcripts. Its majority found the insurer’s showing sufficient; a dissent disagreed.

There is also a later outcome to Jason’s Arnica comparison. The First Department reversed the 2014 ruling in Arnica, 137 AD3d 421 (2016) and granted insurer summary judgment because the opposing affidavit did not address objective test findings. Jason’s 2016 follow-up records that reversal.

Jason’s original 2014 commentary

Jason’s December 2014 litigation recollections are preserved below. The published decisions do not disclose the compared affidavits, so his descriptions of identical or similar proof are not independently verified here. Read the Koyachman and low-impact comparisons with the distinctions above, and the Arnica comparison with its 2016 reversal.

Perhaps the only thing worse than leaving your fate in the hands of the Civil Court is to leave your fate at the mercy of the Appellate Division.  I say this not in a disparaging way; it just bespeaks the randomness of the decisions that come from these Courts.

Those who have been in this business awhile (>10 years) can tell you that cases you didn’t think you should win you won, and those cases that you should have won, you did not win.

This occurred to me in the last month.  An appeal that I perfected due to frustration and without much legal precedent was a victory for me. (Koyachman v Paige Mgt. & Consulting, LLC, 121 A.D.3d 951 ).  I was beyond shocked to have won Koyachman.  The failure to serve an OSC as directed in the order mandates the denial; yet, there is now a Koyachman exception.

Yesterday, the court despite granting similar relief to Plaintiff on similar affidavits in Mercury Cas. Co. v Surgical Ctr. at Milburn, LLC, 65 AD3d 1102 (2d Dept. 2009), denied similar relief in Interboro v. Johnson.   In both of these cases, the insurance carrier solely relied upon a radiological review.  Compare Stephen Fealy, M.D., P.C. v State Farm Mut. Auto Ins. Co.. 28 Misc.3d 136(A)(App. Term 2d Dept. 2010)(finding prima facie entitlement to summary judgment on causation based upon radiological review)

Compare this to  Shahid Mian, M.D., P.C. v Interboro Ins. Co., 39 Misc.3d 135(A)(App. Term 1st Dept. 2013), where the carrier relied upon a radi0logical review and a peer review to dispute the causal relationship between the accident the treatment, and the Court dismissed the complaint.

A similar instance of this disconnection between cases with similar records  is the Appellate Term holding that a low-impact study cannot disprove causation (Bronx Radiology, P.C. v New York Cent. Mut. Fire Ins. Co.. 17 Misc.3d 97 ), while another Appellate Term held that the low impact study was not only sufficient to raise an issue of fact; but was sufficient to prima facie prove lack of causation.   Andromeda Med. Care, P.C. v Utica Mut. Ins. Co., 34 Misc.3d 153(A)(App. Term 2d Dept. 2012)

Or, how about the Appellate Term which held a conclusory affidavit was insufficient to defeat a medical necessity motion (Utica Acupuncture, P.C. v Interboro Ins. Co., 39 Misc.3d 139), yet allowed the same type of conclusory affidavit to defeat the motion.    Arnica Acupuncture P.C. v Interboro Ins. Co., 43 Misc.3d 130(A)(App. Term 1st Dept. 2014)

So Johnson is another example of placing your fate with the Appellate Division and hoping for the best.

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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

Causation in New York Personal Injury & No-Fault Law

Causation — proving that the defendant's negligence or the accident caused the plaintiff's injuries — is an essential element of every personal injury and no-fault claim. New York courts distinguish between proximate cause, intervening causes, and pre-existing conditions that may have been aggravated by an accident. The legal standards for establishing causation through medical evidence and the defenses available to challenge causal connection are analyzed in depth across these articles.

346 published articles in Causation

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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 causation 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.

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

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