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Medical Necessity in No-Fault Insurance: Understanding the First Department’s Victory for Insurance Carriers
Medical Necessity

Medical Necessity in No-Fault Insurance: Understanding the First Department’s Victory for Insurance Carriers

By Jason Tenenbaum 8 min read

Key Takeaway

Learn about medical necessity in New York no-fault insurance from the First Department's Enko decision. Expert legal help for healthcare providers. Call 516-750-0595.

This article is part of our ongoing medical necessity coverage, with 170 published articles analyzing medical necessity 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.

Medical Necessity in No-Fault Insurance: Understanding the First Department’s Victory for Insurance Carriers

In the evolving landscape of New York no-fault insurance law, medical necessity determinations have become increasingly critical for both healthcare providers and insurance carriers. The recent decision in Enko Enterprises International, Inc. v Clarendon National Insurance Co. represents a significant victory for insurance carriers, providing clear guidance on how medical necessity challenges can successfully defeat claims for medical supplies and equipment.

For healthcare providers throughout Long Island, Queens, Brooklyn, Manhattan, and the Bronx who supply medical equipment and supplies under no-fault insurance coverage, understanding how courts evaluate medical necessity is essential to avoiding costly claim denials. At the Law Office of Jason Tenenbaum, we’ve been closely monitoring these developments and helping healthcare providers address the complex requirements for proving medical necessity in no-fault cases.

The Enko Decision: A Medical Necessity Victory for Carriers

Enko Enters. Intl., Inc. v Clarendon Natl. Ins. Co., 2010 NY Slip Op 52267(U) (App. Term 1st Dept. 2011)

Defendant demonstrated, through the affirmed peer review report of a physician, that the medical supplies plaintiff-provider afforded to its assignor were not medically necessary (see generally CPT Medical Services, P.C. v New York Cent. Mut. Fire Ins. Co., 18 Misc 3d 87 ). In this connection, we note that the physician opined that the medical supplies were not medically necessary because the assignor was already receiving both physical and chiropractic therapy for his injuries, treatment that the physician concluded was sufficient under the circumstances. In opposition, plaintiff, which did not submit any evidence regarding the medical necessity of the supplies, failed to raise a triable issue.”

Not only do we have a victory from the carrier on a medical necessity summary judgment case since CPT -but we have a medical rationale that has prima facie proven the supplies to lack medical utility. Not bad.

Understanding Medical Necessity in New York No-Fault Law

The Enko decision represents a significant shift in how New York courts approach medical necessity determinations in no-fault insurance disputes. For medical equipment suppliers, durable medical equipment (DME) providers, and other healthcare practitioners serving patients throughout Nassau County, Suffolk County, and the five boroughs of New York City, this ruling has important implications for how they document and justify the medical supplies they provide.

Under New York no-fault law, medical necessity requires that the treatment, service, or supply be:

  • Appropriate: The service must be suitable for the patient’s condition and diagnosis
  • Necessary: The service must be required for the patient’s medical condition
  • Reasonable: The service must be consistent with generally accepted medical standards
  • Cost-Effective: The service must not be duplicative of other adequate treatment already being provided

The Enko Analysis: Duplication and Sufficiency

The Enko decision is particularly significant because it establishes that medical supplies can be deemed unnecessary when the patient is already receiving adequate treatment through other modalities. The court’s analysis focused on the concept of treatment sufficiency rather than absolute contraindication.

The key finding in Enko was that the physician reviewers concluded the assignor was “already receiving both physical and chiropractic therapy for his injuries, treatment that the physician concluded was sufficient under the circumstances.” This reasoning suggests that courts will look at the totality of care being provided rather than evaluating each service in isolation.

Strategic Implications for Healthcare Providers

For healthcare providers throughout the New York metropolitan area, the Enko decision creates new challenges in establishing medical necessity for supplies and equipment, particularly when patients are receiving multiple forms of treatment.

Documentation Requirements

Following the Enko decision, healthcare providers should enhance their documentation practices to include:

Comprehensive Medical Justification: Detailed explanations of why specific supplies or equipment are necessary despite other ongoing treatments.

Treatment Coordination: Clear documentation showing how supplied equipment complements rather than duplicates other therapies.

Clinical Rationale: Specific medical reasons why existing treatment is insufficient without the additional supplies.

Objective Measurements: Quantifiable data showing the need for additional interventions beyond current therapy.

The Burden of Proof Evolution

The Enko case demonstrates the evolving burden of proof requirements for medical necessity challenges. Insurance carriers can now establish prima facie cases by demonstrating that existing treatment is adequate, shifting the burden to providers to prove additional necessity.

This shift has several implications for providers throughout Long Island, Queens, Brooklyn, Manhattan, the Bronx, and Westchester County:

Proactive Evidence Gathering: Providers must anticipate challenges and gather supporting evidence before claims are denied.

Expert Medical Support: Having qualified medical professionals who can testify to necessity becomes more critical.

Comprehensive Treatment Planning: Providers must demonstrate how their services fit into the overall treatment plan.

The Peer Review Process and Medical Necessity

The Enko decision highlights the critical role of peer review in medical necessity determinations. The insurance carrier successfully used an “affirmed peer review report of a physician” to establish that the medical supplies lacked necessity.

Understanding Peer Review Standards

Peer reviews in no-fault cases typically involve qualified physicians reviewing treatment records and making determinations about medical necessity. The Enko case demonstrates that these reviews can be successful when they provide specific medical reasoning for their conclusions.

Key elements of effective peer reviews include:

  • Review by appropriately qualified medical professionals
  • Consideration of all relevant medical records and treatment history
  • Specific analysis of why proposed treatment is unnecessary
  • Reference to accepted medical standards and guidelines
  • Clear explanation of the medical reasoning behind the determination

Challenging Peer Review Determinations

For healthcare providers facing peer review determinations, the Enko case underscores the importance of mounting effective challenges. Providers should consider:

Expert Rebuttal: Obtaining contradictory opinions from equally qualified medical professionals who can explain why the supplies are medically necessary.

Clinical Evidence: Presenting objective evidence showing the inadequacy of existing treatment modalities.

Treatment Outcomes: Demonstrating improved patient outcomes when the disputed supplies are provided.

Standard of Care: Showing that providing the supplies is consistent with accepted medical practice in the relevant specialty.

Medical Supplies vs. Treatment Services

The Enko decision specifically addressed medical supplies rather than active treatment services, which creates important distinctions for providers to understand.

Supplies and Equipment Considerations

Medical supplies and durable medical equipment face unique challenges in establishing necessity:

Passive vs. Active Treatment: Supplies often provide passive support while therapies provide active intervention, making it easier to argue duplication.

Cost-Benefit Analysis: Courts may more readily find supplies unnecessary if active therapies are deemed sufficient.

Usage Documentation: Providers must document actual usage and benefit from supplied equipment.

Alternative Options: Courts will consider whether less expensive alternatives could provide equivalent benefits.

Integration with Active Treatment

The Enko reasoning suggests that medical supplies are most vulnerable when they appear to duplicate the benefits of active treatment. Providers should focus on demonstrating how supplies enhance or enable other treatments rather than merely supplement them.

Impact on Different Provider Categories

The Enko decision affects different types of healthcare providers in various ways:

Durable Medical Equipment (DME) Suppliers

DME providers throughout Nassau County, Suffolk County, and New York City must now:

  • Document how equipment addresses specific functional limitations not resolved by therapy
  • Show how equipment enables or enhances the effectiveness of other treatments
  • Provide objective measures of patient need that therapy alone cannot address
  • Demonstrate compliance monitoring and outcome tracking

Medical Supply Companies

Companies providing medical supplies must enhance their documentation to show:

  • Specific medical conditions requiring the supplies
  • How supplies address needs not met by active treatment
  • Clinical evidence supporting the necessity of specific supplies
  • Coordination with treating physicians to establish medical necessity

Litigation Strategy After Enko

The Enko decision changes the litigation landscape for medical necessity disputes involving supplies and equipment.

For Healthcare Providers

Providers facing medical necessity challenges should:

Develop Comprehensive Records: Create detailed documentation showing the specific medical need for supplies beyond existing treatment.

Coordinate Care Documentation: Ensure treating physicians document the necessity for additional supplies in their treatment notes.

Gather Expert Support: Identify medical experts who can explain why supplies are necessary despite other ongoing treatments.

Document Outcomes: Track and document improved patient outcomes when disputed supplies are provided.

For Insurance Companies

The Enko decision provides insurance carriers with a roadmap for successful medical necessity challenges:

Comprehensive Peer Review: Ensure peer reviewers consider all aspects of the patient’s treatment plan.

Specific Medical Reasoning: Require peer reviewers to provide detailed medical justification for their determinations.

Treatment Duplication Analysis: Focus on whether existing treatment already addresses the medical needs targeted by disputed supplies.

Cost-Effectiveness Evaluation: Consider whether less expensive alternatives could provide equivalent medical benefits.

The Enko decision reflects broader trends in the First Department toward more rigorous evaluation of medical necessity claims. This trend suggests several developments:

Increased Scrutiny of Supply Claims

Courts are becoming more skeptical of medical supply claims, particularly when patients are receiving multiple forms of treatment. This increased scrutiny requires providers to present stronger evidence of medical necessity.

Focus on Treatment Integration

The Enko reasoning emphasizes the importance of viewing treatment as an integrated whole rather than separate components. Providers must demonstrate how their services fit into comprehensive treatment plans.

Economic Considerations

While not explicitly stated, the Enko decision reflects underlying concerns about healthcare costs and the need to avoid duplicative or unnecessary services.

Frequently Asked Questions About Medical Necessity

Q: Can medical supplies be deemed unnecessary if a patient is receiving other treatment?

A: Yes, according to the Enko decision, medical supplies can be found unnecessary if a physician determines that existing treatment (such as physical and chiropractic therapy) is sufficient to address the patient’s medical needs.

Q: What type of evidence is most effective in challenging a medical necessity determination?

A: The most effective evidence includes expert medical opinions explaining why the disputed supplies are necessary despite other treatments, objective clinical data showing ongoing need, and documentation of improved outcomes when supplies are provided.

Q: How should healthcare providers document medical necessity for supplies?

A: Providers should create comprehensive documentation showing: (1) specific medical conditions requiring the supplies, (2) how supplies address needs not met by existing treatment, (3) clinical evidence supporting necessity, and (4) coordination with treating physicians.

Q: Can peer review determinations be successfully challenged?

A: Yes, peer review determinations can be challenged with contradictory expert opinions, clinical evidence of medical necessity, documentation of treatment outcomes, and evidence that providing the supplies is consistent with accepted medical practice.

Q: What should providers do if their medical necessity is questioned?

A: Providers should immediately gather supporting documentation, consult with treating physicians, consider obtaining expert medical opinions, and work with experienced legal counsel who understands no-fault insurance medical necessity requirements.

Protecting Your Practice in Medical Necessity Disputes

Whether you’re a DME supplier dealing with equipment denials or a medical provider whose necessity determinations are being challenged, understanding the evolving standards established by decisions like Enko is essential to protecting your practice and ensuring appropriate patient care.

The Enko decision represents just one component of an increasingly complex framework of no-fault insurance law in New York. For healthcare providers serving patients throughout Long Island, Queens, Brooklyn, Manhattan, the Bronx, and surrounding areas, staying informed about these legal developments can mean the difference between successful claim recovery and financial losses.

Navigating medical necessity challenges in New York’s no-fault insurance system requires experienced legal counsel who understands both the medical and legal aspects of these complex cases. The Law Office of Jason Tenenbaum has extensive experience representing healthcare providers in medical necessity disputes throughout Long Island and the greater New York City area.

Our comprehensive understanding of decisions like Enko and their implications for different types of healthcare providers allows us to develop effective strategies for both establishing medical necessity and defending against improper denials. We understand how to present compelling medical evidence, challenge inadequate peer reviews, and advocate for appropriate patient care within the no-fault system.

From our offices serving Nassau County, Suffolk County, Queens, Brooklyn, Manhattan, the Bronx, and Westchester County, we provide experienced representation for:

  • Durable medical equipment suppliers facing necessity challenges
  • Medical supply companies dealing with systematic claim denials
  • Healthcare providers whose treatment decisions are being questioned
  • Medical practices navigating complex no-fault insurance requirements
  • Patients whose medically necessary supplies have been inappropriately denied

Don’t Let Medical Necessity Challenges Undermine Patient Care

The victory for insurance carriers in the Enko case serves as a reminder that New York’s no-fault insurance laws continue to evolve in ways that can significantly impact healthcare providers and patient access to necessary medical supplies. Whether you’re facing a specific medical necessity challenge or need to strengthen your documentation practices to prevent future denials, having experienced legal counsel can make the critical difference.

Understanding the nuances of medical necessity determinations, peer review challenges, and the integration of treatment modalities requires both medical knowledge and legal expertise. Don’t allow inadequate legal representation to compromise your practice or your patients’ access to medically necessary supplies and equipment.

Contact the Law Office of Jason Tenenbaum today at 516-750-0595 for experienced representation in your medical necessity dispute. Protect your practice and ensure your patients receive the medical supplies they need.

Call 516-750-0595 now to schedule a consultation and learn how we can help you navigate New York’s complex medical necessity requirements and defend against inappropriate insurance carrier challenges.


Legal Update (February 2026): Since this 2011 analysis of medical necessity standards in no-fault insurance, New York’s regulatory framework governing medical necessity determinations may have been modified through amendments to the Insurance Law, updates to fee schedules, or changes in required documentation standards for peer review reports and medical supply authorizations. Practitioners should verify current provisions regarding medical necessity burdens of proof and acceptable forms of medical evidence under the most recent regulations and case law.

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

Medical Necessity Disputes in No-Fault Insurance

Medical necessity is the most common basis for no-fault claim denials in New York. Insurers hire peer reviewers to opine that treatment was not medically necessary, shifting the burden to providers and claimants to demonstrate otherwise. The legal standards for establishing and rebutting medical necessity — including the sufficiency of peer review reports, the qualifications of reviewing physicians, and the evidentiary burdens at arbitration and trial — are the subject of extensive case law. These articles provide detailed analysis of medical necessity litigation strategies and court decisions.

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Attorney Jason Tenenbaum

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.

24+ years in practice 1,000+ appeals written 100K+ no-fault cases $100M+ recovered

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 medical necessity 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

About the Author

Jason Tenenbaum

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

Legal Resources

Understanding New York Medical Necessity Law

New York has a unique legal landscape that affects how medical necessity cases are litigated and resolved. The state's court system includes the Civil Court (for claims up to $25,000), the Supreme Court (the primary trial court for unlimited jurisdiction), the Appellate Term (which hears appeals from lower courts), the Appellate Division (divided into four Departments, with the Second Department covering Long Island, Brooklyn, Queens, Staten Island, and several upstate counties), and the Court of Appeals (the state's highest court). Each court has its own procedural requirements, local rules, and case-assignment practices that can significantly impact the outcome of your case.

For medical necessity matters on Long Island, cases are typically filed in Nassau County Supreme Court (at the courthouse in Mineola) or Suffolk County Supreme Court (in Riverhead). No-fault arbitrations are heard through the American Arbitration Association, which assigns arbitrators throughout the metropolitan area. Workers' compensation claims go to the Workers' Compensation Board, with hearings at district offices across the state. Understanding which forum is appropriate for your case — and the specific procedural rules that apply — is essential for a successful outcome.

The procedural landscape in New York also includes important timing requirements that can affect your case. Most civil actions are subject to statutes of limitations ranging from one year (for intentional torts and claims against municipalities) to six years (for contract actions). Personal injury cases generally have a three-year deadline under CPLR 214(5), while medical malpractice claims must be filed within two and a half years under CPLR 214-a. No-fault insurance claims have their own regulatory deadlines, including 30-day filing requirements for applications and 45-day deadlines for provider claims. Understanding and complying with these deadlines is critical — missing a filing deadline can permanently bar your claim, regardless of how strong your case may be on the merits.

Attorney Jason Tenenbaum regularly practices in all of these venues. His office at 326 Walt Whitman Road, Suite C, Huntington Station, NY 11746, is centrally located on Long Island, providing convenient access to courts and offices throughout Nassau County, Suffolk County, and New York City. Whether you need representation in a no-fault arbitration, a personal injury trial, an employment discrimination hearing, or an appeal to the Appellate Division, the Law Office of Jason Tenenbaum, P.C. brings $24+ years of real courtroom experience to your case. If you have questions about the legal issues discussed in this article, call (516) 750-0595 for a free, no-obligation consultation.

New York's substantive law also presents distinct challenges. In motor vehicle cases, the no-fault system under Insurance Law Article 51 provides first-party benefits regardless of fault, but limits the right to sue for non-economic damages unless the plaintiff establishes a "serious injury" under one of nine statutory categories. This threshold — codified at Insurance Law Section 5102(d) — requires medical evidence showing more than a minor or subjective injury, and courts have developed detailed standards for each category. Fractures must be documented through imaging studies. Claims of permanent consequential limitation or significant limitation of use require quantified range-of-motion testing with comparison to norms. The 90/180-day category demands proof that the plaintiff was unable to perform substantially all of their usual daily activities for at least 90 of the 180 days following the accident.

In employment discrimination cases, the legal standards vary depending on whether the claim arises under state or local law. The New York State Human Rights Law employs a burden-shifting framework: the plaintiff must first establish a prima facie case by showing membership in a protected class, qualification for the position, an adverse employment action, and circumstances giving rise to an inference of discrimination. The burden then shifts to the employer to articulate a legitimate, non-discriminatory reason for its decision. If the employer meets this burden, the plaintiff must demonstrate that the stated reason is pretextual. The New York City Human Rights Law, by contrast, applies a broader standard, asking whether the plaintiff was treated less well than other employees because of a protected characteristic.

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