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John K. Ninomiya, FSA, MAAA

Healthcare Management Consultant
San Diego, CA, US

Tel: +1 858 5588400

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Professional Designations

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


  • AB (summa cum laude), Applied Mathematics, Harvard College
  • Master of Health Policy and Management, Harvard School of Public Health
  • PhD, Public Health (Epidemiology), San Diego State University/University of California San Diego Joint Doctoral Program

Current Responsibility

John is a health care consultant with Milliman’s San Diego office. Most of his current activity involves data analysis in support of clinical guideline development and healthcare utilization benchmarking. He joined the firm in 1998.


Prior to joining Milliman, John worked for 10 years at a well-known, publicly traded managed care company, the last five as corporate vice president for health data analysis. John was responsible for actuarial services, as well as data analysis in support of utilization management, quality assurance, and provider contracting. His projects included implementation of HEDIS reporting and sponsorship of the data warehouse project. He was also involved in strategic planning for the health services area.

John specializes in analyzing the performance of healthcare delivery systems, from the perspective of both financial risk and the quality and efficiency of services. John’s industry background provides him with insights into the types of financial and clinical management data that can catalyze improvements in quality and cost. His academic training in health services research and epidemiology and his many years of experience providing data analysis support for clinical guideline development make him uniquely suited for projects in which clinical issues are addressed from an actuarial or statistical perspective.

  • Work at Milliman

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