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Greg O. Callahan

Senior Consultant
San Diego, CA, US

Gregory Callahan has been with Milliman for three years and is located in the Orlando, Florida area. His current responsibility is largely focused in the pharmacy benefit management (PBM) health practice.

Greg’s primary responsibilities include:

  • PBM contracting, auditing, and request for proposals (RFPs)
  • Client cost analysis
  • Pharmacy benefit vendor selection
  • Healthcare reform
  • Benefit planning
  • Benefit operations management
  • Vendor oversight
  • Benefit design
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