Navigate today’s most pressing health industry challenges with a leading global expert by your side.
ACO utilization & cost evaluation
Healthcare cost modeling
Preventive digital health
Insurance risk assessment
Medicare plan selection solution
Healthcare risk adjustment
Meet growing needs for innovative insurance solutions while increasing operational health and improving compliance.
Property & casualty advisory services
Modern flood insurance program
Investment, advisory & trading services
Financial modeling & industrialization
Geographic rating insights
Premium comparison platform
Retirement & Benefits
Deliver on the promises of the past and create smart solutions for the future.
Pension administration & communication
Retirement benefits administration platform
Compensations & benefits
Benefit plan evaluation
Health & welfare benefits administration platform
Manage complex risks using data-driven insights, advanced approaches, and deep industry experience.
Auto policy underwriting
Software performance enhancement
Mortgage platform for investments & reinsurance
Solvency II reporting & compliance
This is a place where your ideas and insights make an impact. Where an independent, entrepreneurial spirit is an advantage. And where diversity of thought and experience makes us who we are.
Data-driven insight. Deep expertise. Transformative innovation. Since 1947, Milliman has delivered intelligent solutions to improve health and financial security.
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:
Greg spends much of his time preparing and speaking at leading industry conferences while helping his clients manage the pharmacy/payer/PBM landscape. Greg has held high profile account management positions within the PBM industry spanning more than 13 years over multiple lines of business including Managed Healthcare (Medicare), 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 pharmacy program development. He has demonstrated success in strategic planning, problem solving, and has a successful track record of overall cost management, with an emphasis on practical and focused solutions.