CenExel Clinical Research Executive and Leadership Team

May, 2026

Leadership Overview

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

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 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. By championing innovation and operational efficiencies, Sy Pretorius ensures the company consistently delivers exceptional patient engagement and real-world solutions, solidifying 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 strategic financial planning for the organization. Orullian oversees budgeting, forecasting, and financial reporting, ensuring fiscal responsibility and driving profitable growth across the network of 18 Centers of Excellence. This critical role involves securing capital, managing investments, and optimizing financial performance to support the company's ambitious growth objectives and its commitment to delivering premium data and operational efficiencies. Todd Orullian's financial acumen is essential for maintaining the trust of world-results-driven Pharma, Biotech, and Clinical Research Organizations, underpinning CenExel's ability to execute complex clinical trials and provide real-world solutions.

    Stephanie Christison - Chief Operating Officer

    Stephanie Christison, the Chief Operating Officer at CenExel Clinical Research, oversees the day-to-day operations and execution of strategies across the company's extensive network of clinical research sites. Christison focuses on enhancing operational efficiencies and ensuring the highest standards of data quality and patient engagement are met at each of the 18 Centers of Excellence. This leadership position involves streamlining processes, managing resources, and driving performance improvements to support the successful completion of complex clinical trials. Stephanie Christison's operational expertise is vital for maintaining CenExel's reputation for delivering premium data and real-world solutions to its global partners in the pharmaceutical and biotech industries.

    Sarah Kazmi - Chief Operating Officer, Cenexel (Hollywood)

    Sarah Kazmi, the Chief Operating Officer, Cenexel (Hollywood) at CenExel Clinical Research, spearheads operational execution and strategic development specifically for the Hollywood-based research center. Kazmi drives the implementation of best practices in clinical trial management, ensuring the delivery of premium data and exceptional patient engagement within this key metropolitan area. This focused operational leadership role involves optimizing site performance, managing local resources, and fostering a collaborative environment to achieve successful complex clinical trial outcomes. Sarah Kazmi's dedication to operational excellence directly contributes to CenExel's unified commitment to real-world solutions and its reputation among leading Pharma and Biotech organizations.
    Sarah Kazmi

    Todd Bertoch - Chief Operating Officer & Principal & Investigator

    Todd Bertoch, the Chief Operating Officer & Principal & Investigator at CenExel Clinical Research, combines operational oversight with direct clinical research leadership. Bertoch manages site operations while also leading critical investigational activities, ensuring the highest scientific rigor and data integrity. This dual role is essential for bridging operational efficiencies with deep scientific expertise, driving successful complex clinical trial outcomes. Todd Bertoch's commitment to premium data and exceptional patient engagement, coupled with his investigational insights, reinforces CenExel's ability to provide trusted real-world solutions to the pharmaceutical and biotech industries.

    David Chia - Chief Information Officer

    David Chia, the Chief Information Officer at CenExel Clinical Research, leads the technology strategy and infrastructure that supports the company's nationwide clinical research operations. Chia is responsible for implementing and managing advanced IT systems that enhance data integrity, operational efficiency, and cybersecurity across all 18 Centers of Excellence. This role is crucial for ensuring seamless data flow, facilitating collaboration among research teams, and providing robust technological solutions that drive successful complex clinical trial outcomes. David Chia's strategic direction in information technology empowers CenExel to deliver premium data and real-world solutions, reinforcing its position as a trusted partner for Pharma, Biotech, and CROs.

    Kristine Meade - Chief Human Resources Officer

    Kristine Meade, the Chief Human Resources Officer at CenExel Clinical Research, directs all human capital strategies and initiatives to support the company's mission and growth. Meade focuses on attracting, developing, and retaining top scientific and operational talent across the 18 Centers of Excellence, fostering a culture of excellence and collaboration. This leadership position is instrumental in building a high-performing workforce capable of delivering deep scientific expertise, premium data, and exceptional patient engagement. Kristine Meade ensures that CenExel's human resources practices align with its commitment to operational efficiencies and driving successful complex clinical trial outcomes, making the organization an employer of choice in the clinical research sector.

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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.