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Thomas J. Parciak, FSA, MAAA

San Diego, CA, US

Tel: +1 858 5588400

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Professional Designations

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


  • A.B., Mathematics, College of the Holy Cross
  • Graduate Studies, Mathematics, Florida State University

Current Responsibility

Tom is a consulting actuary with the San Diego office of Milliman. He joined the firm in 2011.


Tom has nearly 40 years of experience as a health and welfare benefits actuary, most recently specializing in actuarial and general consulting services for large employers, including pricing and managing health and welfare benefits programs, vendor selection and management, and strategic healthcare consulting.

Prior to entering consulting, Tom held various positions with several insurance companies. Immediately prior, he served as chief actuary and head of product development for a large New England-based insurer.

Tom was responsible for the development, technical support, and ongoing management of Aon’s National Prescription Drug Coalition, a purchasing coalition of large national employers formed in 2001. At the end of 2010, the coalition consisted of 12 large employers, nearly one million covered lives, and more than $1 billion in drug spending. He was also responsible for Aon’s national health plan discount database and associated reporting tools. At the end of 2010, he was a Senior Vice President at Aon Consulting in Somerset, New Jersey.

Tom also valued and certified statutory reserves and insurance department rate filings for a regional PPO and a client who maintained a captive insurance company.

  • Work at Milliman

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