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John Herzfeld, FCAS, MAAA

Principal, Consulting Actuary
Wakefield, MA, US

Tel: +1 781 2136200

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Professional Designations

  • Fellow, Casualty Actuarial Society
  • Member, American Academy of Actuaries


  • Graduate, Yale University

Current Responsibility

John is a principal and consulting actuary with the Boston office of Milliman. He joined the firm in 1986.


John works extensively on property and casualty consulting assignments. These assignments cover areas such as loss reserving, ratemaking, captive planning, feasibility studies, and rate-of-return analysis. His substantial expertise includes pricing and analysis of workers' compensation benefit changes and group self-insurance programs for various lines, including workers' compensation and medical professional liability. In addition to multiline property and casualty insurers, his clients include self-insurers, captive insurers, reinsurers, medical professional liability specialty insurers, and workers' compensation specialty insurers.

John has priced workers' compensation benefit changes in many states. He assisted the Connecticut, Maryland, Pennsylvania, and Rhode Island insurance departments with the examinations of several large national insurers and reinsurers. He has worked with more than 25 group self-insurance programs.

  • Work at Milliman

    • “I was offered a chance to come in, shake things up, create something."
    Work at Milliman