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Kimberley K. Hiemenz, FSA, MAAA

Principal and Consulting Actuary
Brookfield, WI, US

Tel: +1 262 7842250

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Professional Designations

  • Fellow, Society of Actuaries
  • Member, American Academy of Actuaries
  • Member, American College of Healthcare Executives
  • Member, Healthcare Financial Management Association
  • Members, National Association of Professional Women


  • B.S., Mathematics and Risk Management, Illinois Wesleyan University

Current Responsibility

Kim is a principal and consulting actuary with the Milwaukee office of Milliman. She joined the firm in 2006 after working for two large insurance carriers.


Kim has extensive experience with managed care payment structures, including shared-risk and population-based payment arrangements. She has worked with the Medicare fee-for-service ACO programs, as well as commercial, Medicare Advantage, and Medicaid reimbursement arrangements.

Kim also provides financial and strategic risk management support to insurance companies and health plans. She assists clients with several facets of their business, including product development and pricing, experience analysis, valuation of reserves, financial reporting, and development of risk sharing arrangements. Kim is very well versed in the Affordable Care Act (ACA) and understands the strategic and financial implications of the ACA.

Further, she assists clients with Medicare Advantage feasibility studies and bid development. Her current Medicare clients span a variety of covered populations and benefits.

Kim's clients include integrated delivery systems, hospitals, health plans, including provider-owned health plans, and Associations/Trusts.

Prior to joining Milliman, Kim had more than six years of experience working for two large insurance carriers, where she focused on pricing, experience analysis, and special initiatives, such as broker compensation programs.

Examples of Kim's engagements include:

  • Development of a risk-based reimbursement model, including financial projections under various scenarios
  • Assessment of co-management agreements
  • Strategic analysis and payer contracting strategies
  • Commercial hospital payment rate comparisons
  • Pricing of ACA products
  • Leading the development of a rating model for a large trust
  • Pro-forma projections
  • Developing customized utilization and cost benchmarks
  • Medicare Advantage and Medicare Part D feasibility and bid preparation for multiple organizations, including a special-needs plan
  • Work at Milliman

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