Gregory O. Callahan, MBA
Consultant, Milliman, Inc.

Greg has held high profile account management positions within the PBM industry spanning more than 12 years with multiple lines of business including Managed Healthcare (MAPD), Coalition / GPO, Taft-Hartley, Commercial, Third Party Administrators, 340B, and fully insured Managed Care Organizations. His consulting specialty is the prescription drug benefit market with experience in prescription benefit operations, PBM contracting, and program development. Greg’s primary responsibilities include • PBM Contracting • PBM Auditing • PBM request for proposals (RFPs) • Client cost analysis • Pharmacy benefit vendor selection • Healthcare reform • Benefit planning • Benefit operations management • Vendor oversight • Benefit design