Parexel Executive and Leadership Team

July, 2026

Leadership Overview

Parexel has 10 executives leading key functions including finance, operations, medical affairs, project leadership, and technology solutions.

Driven by a commitment to advancing health outcomes, Parexel focuses on delivering comprehensive biopharmaceutical outsourcing services, enabling clients to bring life-changing therapies to market efficiently and effectively.

Leadership Roles at Parexel

  • Chief Financial Officer - Gregory Rush
  • Chief Operating Officer - Georgina Singleton
  • Global President, Clinical & Data Operations - Debra Tatton
  • President, Medical Marketing Services - Andrew Smith
  • Global President, Project Leadership & Launch Excellence - Teri Karcher
  • President, Operational Excellence, Delivery & Innovation - Amy Kissam-Sands
  • Chief Medical Officer - Charlotte Moser
  • Chief Administrative Officer, General Counsel & Secretary - Michael Crowley
  • Team Captain - Francois Benard
  • Chief Operating & Growth Officer - Peyton Howell
  • Gregory Rush - Chief Financial Officer

    Gregory Rush, the Chief Financial Officer at Parexel, directs all financial operations and strategic fiscal planning. Overseeing budgeting, forecasting, and financial reporting, Rush ensures robust financial health and compliance across the organization. This leadership role involves managing capital allocation, investor relations, and driving profitability through disciplined financial management. By optimizing financial strategies, Gregory Rush directly supports Parexel's global expansion and operational efficiency. The Chief Financial Officer's oversight extends to risk management and the implementation of financial controls to safeguard company assets and ensure sustainable growth. Rush's expertise is critical in navigating complex financial markets and supporting strategic investments that align with the company's long-term objectives.

    Georgina Singleton - Chief Operating Officer

    Georgina Singleton, the Chief Operating Officer at Parexel, orchestrates the company's global operational execution and service delivery. Singleton oversees the integration and efficiency of clinical research, consulting, and informatics services, ensuring seamless client support worldwide. This role demands a deep understanding of operational workflows and a commitment to driving process improvements across all business segments. By focusing on operational excellence, Georgina Singleton enhances the company's capacity to manage complex clinical trials and deliver advanced technology solutions. The Chief Operating Officer's strategic focus includes optimizing resource allocation and implementing best practices to meet and exceed client expectations in the biopharmaceutical and medical device industries. Singleton's leadership ensures that Parexel's operational infrastructure effectively supports its mission of advancing global health.

    Debra Tatton - Global President, Clinical & Data Operations

    Debra Tatton, the Global President, Clinical & Data Operations at Parexel, directs the comprehensive execution of clinical trials and data management services. Tatton oversees the global teams responsible for managing all phases of clinical research, ensuring data integrity, and adhering to stringent regulatory requirements. This leadership position involves optimizing operational workflows for data collection, analysis, and reporting across diverse therapeutic areas. By focusing on efficiency and quality, Debra Tatton drives the successful delivery of complex clinical research projects for pharmaceutical, biotechnology, and medical device clients. The Global President's remit includes fostering innovation in data capture technologies and ensuring robust project management methodologies are applied consistently worldwide. Tatton's strategic oversight is crucial for maintaining Parexel's reputation for excellence in clinical operations.

    Andrew Smith - President, Medical Marketing Services

    Andrew Smith, the President, Medical Marketing Services at Parexel, spearheads the company's offerings in medical communications and commercialization support. Smith directs strategies aimed at effectively communicating scientific data and product value to healthcare professionals and stakeholders globally. This role encompasses overseeing the development of compelling marketing materials, publication planning, and market access initiatives. By integrating scientific expertise with strategic marketing acumen, Andrew Smith enhances Parexel's ability to support product launches and lifecycle management for its clients. The President's focus includes leveraging advanced communication technologies and insights to optimize market penetration and patient access to innovative therapies. Smith's leadership ensures clients receive impactful solutions for their commercialization challenges.

    Teri Karcher - Global President, Project Leadership & Launch Excellence

    Teri Karcher, the Global President, Project Leadership & Launch Excellence at Parexel, drives the strategic execution and successful market introduction of client products. Karcher oversees the comprehensive project management frameworks and specialized teams dedicated to ensuring seamless product launches and ongoing project success across global markets. This critical role involves optimizing cross-functional collaboration, risk mitigation, and adherence to timelines and regulatory requirements. By focusing on meticulous planning and execution, Teri Karcher enhances Parexel's capability to deliver complex projects from development through commercialization. The Global President's mandate includes fostering a culture of excellence in project leadership and ensuring that clients achieve their strategic objectives. Karcher's expertise is vital for navigating the intricate demands of bringing new therapies to patients worldwide.
    Teri Karcher

    Amy Kissam-Sands - President, Operational Excellence, Delivery & Innovation

    Amy Kissam-Sands, the President, Operational Excellence, Delivery & Innovation at Parexel, champions the continuous improvement of service delivery and the adoption of cutting-edge solutions. Kissam-Sands leads initiatives focused on enhancing operational efficiency, ensuring high-quality project execution, and fostering an environment of innovation across Parexel's global operations. This position involves identifying and implementing best practices, leveraging technology, and driving process enhancements to meet evolving client needs in the biopharmaceutical industry. By focusing on excellence and innovation, Amy Kissam-Sands strengthens Parexel's ability to provide superior service and deliver impactful results for clients. The President's strategic vision guides the development and deployment of advanced methodologies and tools that support the company's mission. Kissam-Sands' leadership is instrumental in maintaining Parexel's competitive edge.
    Amy Kissam-Sands

    Charlotte Moser - Chief Medical Officer

    Charlotte Moser, the Chief Medical Officer at Parexel, provides critical medical and scientific leadership across the organization's service offerings. Moser guides the strategic direction for clinical development, regulatory affairs, and medical communications, ensuring scientific rigor and compliance with global health standards. This position involves overseeing the medical aspects of clinical trials and advising clients on complex therapeutic areas. By leveraging extensive medical expertise, Charlotte Moser enhances Parexel's ability to support innovative drug development and commercialization strategies. The Chief Medical Officer's responsibilities include ensuring the safety and efficacy of clinical research protocols and contributing to the scientific integrity of client projects. Moser's insights are vital for navigating the evolving landscape of biopharmaceutical research and development.
    Charlotte Moser

    Michael Crowley - Chief Administrative Officer, General Counsel & Secretary

    Michael Crowley, the Chief Administrative Officer, General Counsel & Secretary at Parexel, provides comprehensive legal, compliance, and administrative oversight for the organization. Crowley manages all legal affairs, ensuring adherence to global regulatory frameworks and corporate governance standards. This role involves advising leadership on legal implications of business decisions, managing corporate policies, and overseeing administrative functions that support efficient operations. By ensuring robust legal and administrative structures, Michael Crowley safeguards Parexel's interests and facilitates smooth business operations across all segments. The Chief Administrative Officer's responsibilities extend to managing corporate records and ensuring compliance with all statutory and regulatory requirements. Crowley's expertise is essential for navigating the complex legal and administrative landscape of the biopharmaceutical industry.
    Michael Crowley

    Francois Benard - Team Captain

    Francois Benard, the Team Captain at Parexel, leads a dedicated group focused on specific strategic initiatives within the organization. Benard's role involves coordinating efforts, fostering collaboration, and ensuring the successful execution of team objectives aligned with Parexel's broader business goals. This position requires strong leadership and organizational skills to guide team members through complex projects and challenges. By championing teamwork and clear communication, Francois Benard enhances the collective productivity and problem-solving capabilities of the team. The Team Captain's focus is on driving performance and achieving targeted outcomes that contribute to Parexel's overall success in the biopharmaceutical services sector. Benard's leadership ensures that the team operates cohesively and effectively.

    Peyton Howell - Chief Operating & Growth Officer

    Peyton Howell, the Chief Operating & Growth Officer at Parexel, drives the strategic integration of operational capabilities with market expansion initiatives. Howell oversees the alignment of global operations to support aggressive growth targets, ensuring that service delivery scales effectively to meet increasing client demand worldwide. This leadership role involves identifying new market opportunities, optimizing business development strategies, and enhancing the company's overall competitive positioning. By focusing on both operational efficiency and strategic growth, Peyton Howell strengthens Parexel's ability to deliver comprehensive solutions and expand its global footprint. The Chief Operating & Growth Officer's responsibilities include fostering synergistic relationships between different business units to maximize market impact and client value. Howell's leadership is critical for navigating the dynamic landscape of the biopharmaceutical services sector and achieving sustained expansion.
    Peyton Howell

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    Frequently Asked Questions Regarding Parexel Top Executives and Leadership Team

    Who leads Parexel?
    Parexel is led by Gregory Rush (Chief Financial Officer), along with executives such as Georgina Singleton (Chief Operating Officer) and Debra Tatton (Global President, Clinical & Data Operations).
    Who is part of Parexel’s executive team?
    The executive team of Parexel includes leaders such as Gregory Rush (Chief Financial Officer), Georgina Singleton (Chief Operating Officer), Debra Tatton (Global President, Clinical & Data Operations) and other senior executives.
    How many executives does Parexel have?
    Parexel has 10 executives leading key business areas.
    What roles are included in Parexel’s leadership team?
    The leadership team of Parexel includes roles such as Chief Financial Officer, Chief Operating Officer, Global President, Clinical & Data Operations, President, Medical Marketing Services, Global President, Project Leadership & Launch Excellence.