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Corey Nathan Berger, FSA, MAAA

Principal, Consulting Actuary
Atlanta, GA, US

Tel: +1 404 2377060

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Professional Designations

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


  • BA, Mathematics and Economics, Washington University in St. Louis

Current Responsibility

Corey is a principal and consulting actuary with the Atlanta office of Milliman. He joined the firm in 2009.


Corey has more than 20 years of actuarial experience in the healthcare industry. Prior to joining Milliman, he worked for WellCare as a senior director in charge of Medicare products. His prior experience includes consulting to employers and payers on a variety of issues.

Corey works with HMOs, Blue Cross/Blue Shield plans, health insurance carriers, and provider organizations. He assists clients in developing and evaluating strategies in the commercial and Medicare markets. His client activities include:

  • Medicare bid development (Medicare Advantage and Part D)
  • Medicare expansion feasibility analysis
  • Medicare Advantage risk score review and analysis
  • Commercial risk score review and analysis
  • Prescription drug formulary analysis
  • Benefit design analysis
  • Analysis of actuarial liabilities
  • Financial reporting, forecasting, and projections
  • Healthcare cost analysis and actuarial cost model development
  • Trend analysis
  • Work at Milliman

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