CenExel Clinical Research Executive and Leadership Team

June, 2026

Leadership Overview

CenExel Clinical Research has 7 executives leading key functions including strategy, finance, information technology, operations, and human resources.

Driven by a commitment to advancing medical science, CenExel Clinical Research leverages deep scientific expertise and operational efficiencies to deliver premium data and exceptional patient engagement, fostering successful complex clinical trial outcomes for global pharmaceutical and biotech partners.

Leadership Roles at CenExel Clinical Research

  • Chief Executive Officer - Sy Pretorius
  • Chief Financial Officer - Todd Orullian
  • Chief Operating Officer - Stephanie Christison
  • Chief Operating Officer, Cenexel (Hollywood) - Sarah Kazmi
  • Chief Operating Officer & Principal & Investigator - Todd Bertoch
  • Chief Information Officer - David Chia
  • Chief Human Resources Officer - Kristine Meade
  • Sy Pretorius - Chief Executive Officer

    Sy Pretorius, the Chief Executive Officer at CenExel Clinical Research, directs the overarching strategy and vision for the company's nationwide clinical research site network. Pretorius guides the organization's expansion and operational excellence across 18 Centers of Excellence, ensuring alignment with the company's mission to drive successful complex clinical trial outcomes. This leadership role involves fostering collaboration among executive teams and maintaining strong relationships with pharmaceutical, biotech, and clinical research organizations that rely on CenExel's premium data and scientific expertise. Sy Pretorius's focus remains on enhancing operational efficiencies and patient engagement to deliver real-world solutions and solidify CenExel's position as a trusted partner in clinical research.
    Sy Pretorius

    Todd Orullian - Chief Financial Officer

    Todd Orullian, the Chief Financial Officer at CenExel Clinical Research, manages all financial operations and fiscal strategy for the integrated clinical research site network. Orullian oversees financial planning, budgeting, and resource allocation across the company's 18 Centers of Excellence, ensuring robust financial health and supporting strategic growth initiatives. This executive function involves managing investor relations, optimizing capital deployment, and ensuring compliance with all financial regulations. Todd Orullian's expertise is critical in maintaining the operational efficiencies and premium data delivery that clients expect, directly contributing to the company's ability to drive successful complex clinical trial outcomes and provide real-world solutions.

    Stephanie Christison - Chief Operating Officer

    Stephanie Christison, the Chief Operating Officer at CenExel Clinical Research, directs the day-to-day operational execution and service delivery across the company's extensive network of 18 Centers of Excellence. Christison focuses on optimizing operational efficiencies, ensuring the highest standards of data quality, and enhancing patient engagement to facilitate successful complex clinical trial outcomes. This executive role involves managing site performance, implementing best practices, and fostering a culture of scientific excellence and collaboration. Stephanie Christison's leadership is key to maintaining CenExel's reputation for delivering premium data and real-world solutions to its trusted pharmaceutical and biotech clients.
    Stephanie Christison

    Sarah Kazmi - Chief Operating Officer, Cenexel (Hollywood)

    Sarah Kazmi, the Chief Operating Officer, Cenexel (Hollywood) at CenExel Clinical Research, spearheads operational leadership and strategic development for the Hollywood-based Center of Excellence. Kazmi ensures the site delivers premium data and exceptional patient engagement, contributing directly to successful complex clinical trial outcomes. This role involves optimizing site-specific operations, fostering scientific expertise, and maintaining rigorous quality standards. Sarah Kazmi's focus on operational efficiencies and collaborative approaches reinforces CenExel's commitment to providing trusted, real-world solutions for pharmaceutical and biotech partners, enhancing the network's overall capabilities.
    Sarah Kazmi

    Todd Bertoch - Chief Operating Officer & Principal & Investigator

    Todd Bertoch, the Chief Operating Officer & Principal & Investigator at CenExel Clinical Research, drives operational excellence and scientific integrity across key research initiatives. Bertoch's dual role ensures seamless integration of clinical operations with principal investigator responsibilities, directly impacting the quality of data and patient engagement. This executive function focuses on advancing complex clinical trial outcomes through rigorous scientific oversight and efficient site management. Todd Bertoch's leadership is instrumental in upholding CenExel's commitment to delivering premium, real-world solutions and maintaining its position as a trusted partner for pharmaceutical and biotech organizations.

    David Chia - Chief Information Officer

    David Chia, the Chief Information Officer at CenExel Clinical Research, architects and oversees the company's entire technology infrastructure and digital strategy. Chia is responsible for implementing advanced IT solutions that enhance operational efficiencies, data integrity, and cybersecurity across the 18 Centers of Excellence. This leadership position involves driving innovation in data management systems and ensuring seamless integration of technology to support complex clinical trial outcomes. David Chia's role is pivotal in leveraging technology to improve patient engagement and deliver premium data, reinforcing CenExel's commitment to providing results-driven, real-world solutions to its pharmaceutical and biotech partners.

    Kristine Meade - Chief Human Resources Officer

    Kristine Meade, the Chief Human Resources Officer at CenExel Clinical Research, leads all human capital strategies and talent management initiatives for the organization. Meade is responsible for cultivating a high-performance culture, driving employee engagement, and ensuring the development of a skilled workforce across the 18 Centers of Excellence. This critical function involves overseeing recruitment, compensation, benefits, and professional development programs to support the company's mission of delivering exceptional patient engagement and scientific expertise. Kristine Meade's strategic direction ensures CenExel attracts and retains top talent, vital for achieving successful complex clinical trial outcomes and providing real-world solutions.

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    Frequently Asked Questions Regarding CenExel Clinical Research Top Executives and Leadership Team

    Who leads CenExel Clinical Research?
    CenExel Clinical Research is led by Sy Pretorius (Chief Executive Officer), along with executives such as Todd Orullian (Chief Financial Officer) and Stephanie Christison (Chief Operating Officer).
    Who is part of CenExel Clinical Research’s executive team?
    The executive team of CenExel Clinical Research includes leaders such as Sy Pretorius (Chief Executive Officer), Todd Orullian (Chief Financial Officer), Stephanie Christison (Chief Operating Officer) and other senior executives.
    How many executives does CenExel Clinical Research have?
    CenExel Clinical Research has 7 executives leading key business areas.
    What roles are included in CenExel Clinical Research’s leadership team?
    The leadership team of CenExel Clinical Research includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, Chief Operating Officer, Cenexel (Hollywood), Chief Operating Officer & Principal & Investigator.