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Across Borders
HSNO proudly works with firms throughout the world.

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Clarity from Complexity
We find the truth in numbers.

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Agile & Scaleable
Working with companies of all sizes since 1973.

Our Services



HSNO is internationally recognized as a leader in insurance claims accounting, litigation support and expert testimony, dedicated to presenting the strongest and most persuasive case possible based on the facts and evidence.

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HSNO is sought after for our exceptional ability to analyze, measure, and report accurate economic damages resulting from business interruption, construction defect, business valuation cases, intellectual property infringement, etc.

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Our strong background in helping clients rapidly respond to workplace crisis enables us to help our global clients identify ways to mitigate cost and time associated with preparing for and responding to legal and economic issues.

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Catastrophe Response

HSNO is ready to respond to your needs during a catastrophe, regardless of location.

Please call us directly on our catastrophe response hotline at
877-FOR-HSNO (4766) for immediate response.

Contact US

International Experience

International Assistance?
Contact our Mexico City or London office for more information.

News Spotlight

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    HSNO Professional Earns Top Honors

    Women Outnumber Men in ICAEW Exams Image Source Info in Article Above For the first time in the history of the Institute of Chartered Accountants in England and Wales (ICAEW) accountancy exams, every top-performing student this year was female. This is up a significant percentage from just November, when 77 percent of the top-scorers in the
  • Rachel Medeiros, Michelle Mulick, Phil Segerson

    2015 MuckFest MS Boston

    On April 26, 2015 the Providence office participated in the 2015 MuckFest MS Boston to raise money and awareness for the National Multiple Sclerosis Society and their fight to end MS.  MuckFest is a 5K obstacle course consisting of muddy terrain and 18 obstacles. The battle against MS is a personal cause for several members in
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    What Makes a Good Expert Witness: A Client’s Perspective

    Mark Falkenhagen, HSNO Partner in our Los Angeles office, received great feedback from a client about what they look for in an expert witness. “The first two things I look for in an expert witness are qualifications and truthfulness.” Click to read the letter.