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
Hollie Curgenven
Senior Study Coordinator II
Michael DeRosa, MA
Prin. Scientist/Programmer III
Maria Melchiorre, BA
Sr. Finance/Accounts Manager
Helen Jones
Associate Director
Operations
Sophie Hughes
Senior Research Associate
Heli Kapadia
Research Scientists II/Programmer
Shaunna Kowalewski, BS
Associate Director,
Compliance & Contracts
Kerry Turner
Senior Data Manager
Swarna Nagiredla
Senior Study Coordinator II
David Navarro, BS
Medical Writer II
Sean Forrest, BA
Senior Manager,
Content & Digital Marketing
Hoan Do
Research Scientist II
Jennifer Clegg, MA
Associate Director II
Tenage McDowell
Research Scientist I
Bridget Iwamuro, BS
Senior Study Coordinator II
Cindy Umanzor-Figueroa
Research Scientist I
Lydia Raither, MSc
Research Scientist II
Swetha Reddy, MS
Senior Research Associate/Programmer II
Tron Tran, BA
Operations Manager
Shannon Vaffis, PhD/MPH
Research Scientist II
Hailin Yu, MPH
Associate Director II/Programmer III
Ibrahim Alfayoumi
Senior Research Associate
Alyssa Bamer
Principal Scientist
Kayleigh Majercak
Research Scientist II
Alivya Barry
Research Associate II
Jake Bourgaize, BSc/MSc/PhD
Senior Research Associate
Nicole Clarke
Senior Research Scientist II
Rasika Bombatkar
Research Associate I
Karen McCormack
Principal Medical Writer
Courtney Thompson
Principal Medical Writer
Elliott Blatt
Research Scientist I
Sondra Arvayo, BS
Finance Manager
Flora Felix
Executive Assistant & Office Manager
Coleen Del Rosario
Senior Research Associate I
Emma Coggins
SAS Programmer II
Melanie Hughes
Research Associate I
Bill Gehringer, BS
Associate Director I
Elaine Langlais
Study Coordinator II
Lucy Lloyd-Price, MSc
Research Scientist II
Lara Sams, MSc
Associate Director I
Natasha Schumacher
Senior Study Coordinator I
Joseph Gyorkey
SAS Programmer I
Abi Okechukwu
Senior Research Scientist II
Clara Garrison
Associate Director
Peter McPherson, PhD
Principal Scientist
Meet our Scientific Advisors
Scientific Board
Competitive Advantage
Discover our approach
Our Careers
Join the team
Our DEI Charter