Research Team

Ryan Ziemiecki, MS
Senior Director, Biostatistics
Naoko Ronquest, PhD
Executive Director, US HTA Strategy and Early Modeling
Margaret Mordin, MS
Vice President, Value and Access
James Brockbank, MSc
Senior Director, Health Economics
headshot of Catherine Siersma
Catherine Siersma, BS, PMP
Director, Project Management
Nuria Riera, PhD
Research Epidemiologist
Mary Levine, BA
Director, Project Manager, Market Access and Outcomes Strategy
Juliana Meyers, MA
Senior Director, Real-World Data & Analytics
Costel Chirila, PhD
Senior Director, Biostatistics
Jennifer A. Luebke, JD
Vice President, Legal & Regulatory Affairs
Sarah Mitchell, BSc
Director, Value & Access
headshot of Chad Downey
Chad Kifalme, BS
Associate Director, Project and Proposal Operations
Catherine Saltus, MA, MPH
Director, Epidemiology
T. Michelle Brown, PhD
Executive Director, Patient-Centered Outcomes Assessment
Anne Heyes, MBA
VP, Value and Access (Europe)
Isobel Pearson, DPhil
Senior Director, Value and Access
Susana Perez-Gutthann, MD, PhD
Senior Vice President, Epidemiology and Biostatistics
Lia Gutierrez, MPH
Senior Director, Epidemiology