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Mary Ann McMahon, FCAS, MAAA

Consulting Actuary
Wakefield, MA, US

Tel: +1 781 2136200

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Professional Designations

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


  • BA (magna cum laude), Economics, Tufts University

Current Responsibility

Mary Ann is a consulting actuary with the Boston office of Milliman. She joined the firm in 2001.


Mary Ann's experience in property and casualty actuarial work includes loss reserving, pricing, ratemaking, feasibility studies, and data analysis. Her clients include multiline property and casualty insurers, captives, self-insurers, risk retention groups, and state insurance departments.

Mary Ann has assisted the insurance departments in Maryland and Massachusetts with the examinations of several large property and casualty insurance companies. She has also assisted in the review of hundreds of rate filings for the insurance departments in Kentucky, Maryland, New Hampshire, Rhode Island, and Vermont.


  • Mary Ann is a current and past member of several committees for the Casualty Actuarial Society.
  • Work at Milliman

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