Meet Our Team

Leadership

Headshot image of Alan Katz

Alan Katz

Chief Executive Officer
Headshot image of toXcel's president Bryan Katz

Bryan Katz

President
Headshot image of Christine McAlinden

Christine McAlinden

Associate Director and Chief Operating Officer of toXcel International Ltd.

Headshot image of Alan Katz

Julie Evans

Vice President – Strategy

Image of Jennifer Symoun

Jennifer Symoun

Vice President – Engineering and Behavioral Sciences
headshot image of Connie Welch-Dujardin

Connie Welch-DuJardin

Vice President – Life Sciences
Headshot of Nicholas Kehoe at toXcel

Nicholas Kehoe

Chief Financial Officer

Toxicology and Life Sciences

Headshot image of Alan Katz

Nelson Cornwell

Staff Scientist
Image of Jennifer Symoun

Olwyn Diggins

Senior Associate Scientist
headshot image of Connie Welch-Dujardin

Jennifer Fulford

Manger of Scientific Projects
headshot image of Connie Welch-Dujardin

Melba S. Morrow

Director of Toxicology
Headshot image of Alan Katz

Sweta Ojha

Staff Scientist
headshot image of Connie Welch-Dujardin

Madisson Powell

Assistant Scientist
headshot image of Connie Welch-Dujardin

Will Ruddock

Nonclinical Toxicology Consultant – Senior Scientist
Headshot image of Alan Katz

Vladimir Savransky

Associate Director | Toxicology
Image of Jennifer Symoun

Gary K. Whitmyre

Senior Director of Exposure and Risk Assessment

Engineering and Behavioral Sciences

Headshot image of Alan Katz

Allyson Barlow

Research Scientist
Image of Jennifer Symoun

Katie Belt

Junior Transportation Engineer
headshot image of Connie Welch-Dujardin

Aaron Benson

Senior Human Factors Scientist
headshot image of Connie Welch-Dujardin

Paige Braude

Transportation Engineer
Headshot image of Alan Katz

Holly Casey

Team Leader – Land Development
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Gaby Cross

Transportation Engineer
headshot image of Connie Welch-Dujardin

Joy Davis

Team Leader – Transportation Policy and Engagement
headshot image of Connie Welch-Dujardin

Erin Filler

Director of Traffic Engineering
Headshot image of Alan Katz

Sadie Hughes

Junior Transportation Engineer
Image of Jennifer Symoun

Steve Jackson

Senior Statistician
Headshot photo of Amanda Keller at toXcel

Amanda Keller

Research Assistant
Headshot of Katrina King at toXcel

Katrina King

Research Assistant
outdoors headshot image of Dave Kirschner

Dave Kirschner

Team Leader – Operations and Safety
headshot image of Erin Kissner at toXcel

Erin Kissner

Senior Associate Scientist
Headshot image of Pamela Kryschtal at toXcel

Pamela Kryschtal

Transportation Engineer
Headshot image of Caleb Losh at toXcel

Caleb Losh

CADD Lead
Headshot image of Sabrina Mesawich at toXcel

Sabrina Mesawich

Junior Transportation Engineer
Headshot photo of Ginny O'Conner

Ginny O'Connor

Transportation Engineer
Headshot image of Phea Padgett

Phea Padgett

Administrative Assistant
Headshot image of Logan Palmer

Logan Palmer

UX and Graphic Designer
Kase Poling headshot image

Kase Poling

Transportation and Resilience Engineer
Headshot image of Paula Raymond

Paula Raymond

Senior Scientist
Headshot image of Carrie Redden

Carrie Redden

Director of Health and Planning
Headshot image of Rob Redden

Rob Redden

Applications Developer
Headshot image of John Shutko

John Shutko

Director of Human Factors
Headshot image of Austin Svancara

Austin Svancara

Research Psychologist
Stephen Taylor

Stephen Taylor

Transportation Data Scientist
Headshot image of Katie Wheeler

Katie Wheeler

Research Scientist

Firmwide Support

Headshot image of Tina Barron

Tina Barron

Director of Contracts
headshot image of Heather Rigdon

Heather Rigdon

Human Resources Coordinator
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Crystal Turner

Office Administrator

Who We Are

At toXcel, our team brings together diverse expertise in science, engineering, research, and consulting to deliver practical solutions for complex challenges. From advancing transportation safety and public health initiatives to providing behavioral research and regulatory support, our people are dedicated to helping clients achieve meaningful, data-driven results.

Get in Touch with Our Team of Experts