Areas of legal expertise

Over 20 years of legal experience, advising insurers and reinsurers on various claims and coverage issues.

Healthcare Liability

  • • Expertise in healthcare-related claims,
    legal and coverage issues.
  • • Conduct claim reviews involving physician
    liability insurers, hospital excess programs
    and allied health programs.
  • • Evaluate exposure to insurers and reinsurers.
  • • Evaluate claims management practices.
  • • Analyze and negotiate high exposure claims.
  • • Manage claims and litigation.
  • • Provide coverage opinions.

General Liability

  • • Conduct claim reviews on behalf of reinsurers
    and direct insurers.
  • • Analyze high exposure claims.
  • • Manage claims and litigation.
  • • Provide coverage opinions.

Workers Compensation

  • • Conduct claim reviews and evaluate exposure.
  • • Evaluate claims management practices.

Auto Liability

  • • Conduct claim reviews on behalf of reinsurers.
  • • Evaluate exposure on trucking and personal auto
  • • Analyze and consult regarding claims
    management practices.
  • • Provide coverage options.


Together, we offer a wide range of services. Find out more about us by clicking on our names below.

We specialize in:

  • • Healthcare Liability
  • • General Liability
  • • Auto Liability
  • • Workers Compensation

John O'Byrne - Principal

JohnObyrneJohn has over 20 years of legal experience, advising insurers and reinsurers on various claims and coverage issues.  Following graduation from the Fordham University School of Law in 1991, John was employed by Mendes & Mount, LLP, and became an Equity Partner in 2005.  He has extensive experience in the healthcare liability sector, and has capably represented clients in the London, U.S., Bermuda and German insurance markets.  John has particular expertise in evaluating healthcare liabilities and advising on claims management practices at both large and small liability insurance companies.  He has been retained on numerous occasions to evaluate and counsel claims managers on the most effect claims management protocols and procedures.  He has also been retained by insurers and self-insured entities to evaluate existing claims portfolios. John has been retained by primary and excess insurers to obtain the best possible outcome for serious healthcare cases pending across the country.  During his representation of insurers and reinsurers, John has reviewed and evaluated thousands of healthcare claims in numerous jurisdictions, giving him a unique perspective on claim values and strategies.  For over 20 years, John has conducted annual claim reviews at numerous physician insurance companies on behalf of their reinsurers, as well as evaluating hospital liability programs on behalf of their excess insurers and reinsurers.  In this regard, he has provided valued insight to the benefit of both the reinsurer and the company being reviewed.  John has also acted as the moderator of the claims panel at the annual P.L.U.S. Medical Professional Liability Symposium in 2007, 2008 and 2012.  He has also recently given a presentation on healthcare liability trends to many of his London-based clients. In addition to his work in the healthcare field, John has also represented clients with respect to general liability, transportation liability and workers compensation issues.  He has also evaluated complex coverage issues. John is married and has four children.  He is active in his local church and school, coaching CYO basketball for many years.

Contact John O'Byrne at:

P: 914-365-2592 M: 646-629-0865

Brook Manewal - Of Counsel

BrookManewalBrook has seven years of experience working in the insurance and reinsurance sector, most recently as a partner at Mendes & Mount.  She joined Mendes & Mount in 2004, after graduating cum laude from the University of San Diego School of Law. During her tenure at Mendes & Mount, Brook’s work focused on healthcare liability. She has experience in all aspects of the field, including pre-underwriting risk evaluations, the drafting of policy wordings, coverage analysis and risk assessment, litigation management and dispute resolution, as well as portfolio reviews with regard to hospital, physician, allied health, and long term care coverage. Brook has worked closely with domestic and international insurers and reinsurers, evaluating their risk portfolios throughout the country and representing her clients’ interests in the most threatening cases.   In 2008, she participated in a secondment in London with Faraday Underwriting (Lloyd’s of London syndicate 435), working closely with both their claims and underwriting teams. During her stay, she also spent time with Aspen Underwriting and Towers Perrin (now Towers Watson). Brook’s experience in the insurance and reinsurance field extends beyond the healthcare realm.  She has also represented clients with regard to general liability, directors & officers’ liability, errors and omissions, and worker’s compensation coverage. In addition to her consulting work, Brook has also participated in numerous mediations and arbitrations nationwide. Brook is admitted to practice law in New York and Connecticut.  She obtained a Bachelor of Arts degree from New York University in 1999, graduating cum laude with honors in Sociology.  She is married with two children.

Contact Brook Manewal at:

P: 914-365-2594 M: 917-721-3026

Contact Us

We look forward to hearing from you.

The O'Byrne Law Firm
23 Wilson Drive
New Rochelle, NY 10801

Phone: (914) 365-2593

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