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Lynn F. Dong, FSA, MAAA

Principal, Consulting Actuary
Seattle, WA, US

Tel: +1 206 5045638

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Professional Designations

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


  • BS, Mathematics, University of Washington
  • BA, Japan Studies, University of Washington

Current Responsibility

Lynn is a principal and consulting actuary with the Seattle office of Milliman. She joined the firm in 1994.


Lynn works extensively with provider health systems and Accountable Care Organizations (ACOs), as well as with commercial, Medicare, and Medicaid health plans. Lynn consults with clients regarding innovative risk-sharing arrangements and alternative payment models. Lynn’s consulting regarding risk arrangements includes private ACO arrangements and CMS programs such as the Medicare Shared Savings Program and Next Generation ACO. Lynn also provides traditional actuarial consulting services (e.g., financial projections, valuation of benefit design changes, experience analysis, provider reimbursement analysis, claim liability estimates, and feasibility studies). Lynn serves on Milliman’s Health Research Board and is actively involved in the research and development of multiple components of the Milliman Health Cost Guidelines.

The actuarial services Lynn provides her clients include:

  • Identification and quantification of areas of risk exposure under alternative payment models
  • Feasibility analyses, financial projections, risk-sharing analysis, and development of financial reporting tools for physician groups, health systems, and Accountable Care Organizations (ACOs)
  • Review of risk-sharing contracts and alternative payment models for health systems and ACOs
  • State rate filings for individual, small group, and large group business
  • Preparation of Medicare Advantage bids and feasibility studies
  • Creation of experience cost models, feasibility studies, and projections for commercial, Medicare Advantage, and Medicaid managed care plans
  • Analysis of medical and dental benefit plan designs, including commercial, Medicare Advantage, and Medicare supplement
  • Development of utilization and cost benchmarks for commercial and Medicare Advantage plans
  • Estimation of incurred but not paid claim reserve liabilities
  • New business/renewal underwriting of traditional and managed care lines of business
  • Design and implementation of data warehouse and benchmarking tools
  • Work at Milliman

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