Behind COS:
Meet the Experts
Our team combines decades of expertise with innovative approaches to deliver customized solutions that capture the patient’s voice in healthcare research.
Board Leadership Team
Stacie Hudgens, MSc
Chief Scientific & Strategy Officer
Fabian Cordova, CPA/MBA
Chief Executive Officer
Executive Director Team
Claire Burbridge, MSc
Principal Scientific Advisor
COA
Helen Doll, PhD
Principal Scientific Advisor
Quantitative Science
Jennifer Beaumont, MS
Executive Director
Quantitative Science
Amy Howerter, PhD
Executive Director
Prospective Studies
Director Team
Jason Randall, PhD
Senior Director
COA
Rebecca Cheng
Senior Director
Psychometrics
Sam Rousell, MSc
Senior Director
Programming
Lisa DeGisi
Senior Director
Human Resources
Diane Bock, BS
Senior Director
Study Coordination
Angie Viada, MS/PMP/CSM
Senior Director
Project Management
Chloe Tolley
Senior Director
COA
John Caffrey
Senior Director
Finance & Procurement
Sonia Arroyave
Director,
Operations
COS Professionals
Megan McCool-Myers
Associate Director II
Traci Abraham
Research Scientist II
Shruti Dave
Research Scientist II
Elliott Blatt
Research Scientist II
Michael DeRosa, MA
Prin. Scientist/Programmer III
Coleen Del Rosario
Senior Research Associate I
Helen Jones
Associate Director
Operations
Maria Melchiorre, BA
Sr. Finance/Accounts Manager
Elaine Langlais
Study Coordinator II
Melanie Hughes
Research Associate I
Heli Kapadia
Research Scientists II/Programmer
Shaunna Kowalewski, BS
Associate Director,
Compliance & Contracts
Lucy Lloyd-Price, MSc
Research Scientist II
Kerry Turner
Senior Data Manager
Tenage McDowell
Research Scientist I
Jennifer Clegg, MA
Associate Director II
Swetha Reddy, MS
Senior Research Associate/Programmer II
Lara Sams, MSc
Associate Director I
Ibrahim Alfayoumi
Senior Research Associate
Hailin Yu, MPH
Associate Director II/Programmer III
Alivya Barry
Research Associate II
Peter McPherson, PhD
Principal Scientist
Jake Bourgaize, BSc/MSc/PhD
Senior Research Associate
Clara Garrison
Associate Director
Rasika Bombatkar
Research Associate I
Nicole Clarke
Senior Research Scientist II
Sondra Arvayo, BS
Finance Manager
Flora Felix
Executive Assistant & Office Manager
Hollie Curgenven
Senior Study Coordinator II
Emma Coggins
SAS Programmer II
Sophie Hughes
Senior Research Associate
Bill Gehringer, BS
Associate Director I
David Navarro, BS
Medical Writer II
Swarna Nagiredla
Senior Study Coordinator II
Sean Forrest, BA
Senior Manager,
Content & Digital Marketing
Hoan Do
Research Scientist II
Bridget Iwamuro, BS
Senior Study Coordinator II
Cindy Umanzor-Figueroa
Research Scientist I
Lydia Raither, MSc
Research Scientist II
Natasha Schumacher
Senior Study Coordinator I
Shannon Vaffis, PhD/MPH
Research Scientist II
Tron Tran, BA
Operations Manager
Joseph Gyorkey
SAS Programmer I
Alyssa Bamer
Principal Scientist
Meet our Scientific Advisors
Scientific Board
Competitive Advantage
Discover our approach
Our Careers
Join the team
Our DEI Charter