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Peter Fielek, FSA, MAAA

Chicago, IL, US

Tel: +1 312 4995784

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Professional Designations

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


  • BS, Mathematical Economics, University of Michigan
  • BBA, University of Michigan – Stephen M. Ross School of Business

Current Responsibility

Peter Fielek is an actuary with the Chicago office of Milliman. He joined the firm in 2015.


Peter’s areas of focus are Affordable Care Act (ACA) pricing, commercial risk adjustment, and predictive analytics. He assists providers and Medicare Advantage and Part D plans.

Peter has expertise in the following:

  • Assisting health plans in several states to prepare individual and small group strategy, pricing, and rate filings
  • Working with ACA carriers to complete EDGE server reporting and identifying areas
  • Developing internal models for risk score analytics, coding improvement, and EDGE server submissions
  • Identifying potentially undercoded or overcoded members to optimize risk adjustment for health plans
  • Evaluating provider shared savings arrangements and benchmarking claim costs

Articles and publications

  • Co-Author, “ACA risk adjustment management: Higher EDGE-ucation.” Milliman Insight, December 2017.
  • Co-Author, “ACA risk adjustment management: Time to keep score.” Milliman Insight, December 2017.
  • Work at Milliman

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