Accuray Executive and Leadership Team

July, 2026

Leadership Overview

Accuray has 6 executives leading key functions including finance, human resources, Asia Pacific operations, Americas operations, Japan operations, and medical affairs.

Driven by a commitment to advancing cancer care, Accuray focuses on developing and manufacturing sophisticated radiation oncology systems. The company's leadership philosophy centers on enabling clinicians to deliver precise treatments, minimizing harm to healthy tissue and improving patient quality of life through technological innovation.

Leadership Roles at Accuray

  • Senior Vice President - Chief Financial Officer - Ali Pervaiz
  • President & General Manager (Asia Pacific) - Johannes Diebold
  • President & General Manager (Americas) - Nancy Hiller
  • Region President & General Manager (Japan) - Kazuharu Tomari
  • Senior Vice President, Chief Human Resources Officer - Melanie Rivers
  • Senior Vice President, Chief Medical Officer - Seth Blacksburg
  • Ali Pervaiz - Senior Vice President - Chief Financial Officer

    Ali Pervaiz, the Senior Vice President - Chief Financial Officer at Accuray, directs all financial operations and strategic fiscal planning. Overseeing the company's financial health, Pervaiz ensures robust resource allocation to support Accuray's mission of delivering precise cancer treatment solutions. This leadership role involves managing budgets, financial reporting, and investor relations, aligning fiscal strategies with the company's product development and market expansion goals. By optimizing financial performance, Ali Pervaiz directly contributes to Accuray's capacity for innovation in advanced radiation oncology systems. The financial oversight provided by Pervaiz is critical for sustaining the company's growth and its ability to invest in cutting-edge medical devices that target tumors with exceptional accuracy while minimizing exposure to surrounding healthy tissue. This ensures the long-term viability of Accuray's commitment to improving patient outcomes globally.

    Johannes Diebold - President & General Manager (Asia Pacific)

    Johannes Diebold, the President & General Manager (Asia Pacific) at Accuray, drives strategic growth and operational excellence across the Asia Pacific region. Overseeing market penetration and business development, Diebold ensures Accuray's advanced radiation oncology systems reach healthcare providers throughout this diverse territory. This leadership role involves managing regional sales, service, and support networks, tailoring Accuray's precision cancer treatment solutions to meet local market needs. By expanding Accuray's presence in Asia Pacific, Johannes Diebold directly supports the company's mission to enable clinicians to target tumors with exceptional accuracy. Diebold's focus on regional expansion is critical for delivering innovative medical devices that integrate sophisticated imaging, planning, and delivery technologies, thereby enhancing cancer care capabilities across numerous countries and improving patient outcomes.
    Johannes Diebold

    Nancy Hiller - President & General Manager (Americas)

    Nancy Hiller, the President & General Manager (Americas) at Accuray, spearheads the company's strategic initiatives and operational performance across North and South America. Overseeing market leadership and expansion, Hiller ensures Accuray's advanced radiation oncology systems effectively serve healthcare providers throughout the Americas. This critical role involves directing regional sales, customer support, and market development efforts, adapting Accuray's precision cancer treatment solutions to the unique demands of these markets. By strengthening Accuray's footprint in the Americas, Nancy Hiller directly advances the company's objective of enabling clinicians to target tumors with unparalleled accuracy. Hiller's leadership is fundamental to deploying innovative medical devices that integrate sophisticated imaging, planning, and delivery technologies, thereby enhancing comprehensive cancer care and improving patient quality of life across the continent.
    Nancy Hiller

    Kazuharu Tomari - Region President & General Manager (Japan)

    Kazuharu Tomari, the Region President & General Manager (Japan) at Accuray, directs all business operations and strategic development within the Japanese market. Overseeing market dynamics and customer engagement, Tomari ensures Accuray's advanced radiation oncology systems are optimally deployed to meet the specific needs of Japanese healthcare facilities. This executive responsibility includes managing regional sales, service infrastructure, and clinical support, adapting Accuray's precision cancer treatment solutions for Japan's advanced medical landscape. By driving growth and operational efficiency in Japan, Kazuharu Tomari directly contributes to Accuray's global mission of enabling clinicians to target tumors with exceptional accuracy. Tomari's focus on this key market is vital for integrating sophisticated imaging, planning, and delivery technologies, thereby enhancing cancer care and improving patient outcomes within Japan.

    Melanie Rivers - Senior Vice President, Chief Human Resources Officer

    Melanie Rivers, the Senior Vice President, Chief Human Resources Officer at Accuray, architects the company's talent strategy and organizational development. Overseeing all human resources functions, Rivers cultivates a culture that supports Accuray's dedication to precision cancer treatment. This executive position involves managing employee relations, compensation and benefits, and talent acquisition to ensure the company attracts and retains top professionals in medical device innovation. By fostering a skilled and motivated workforce, Melanie Rivers directly enhances Accuray's ability to develop and manufacture advanced radiation oncology systems. The strategic HR initiatives driven by Rivers are essential for supporting the company's technical approach and product development strategy across its portfolio, ensuring that clinicians have the expert support needed to utilize sophisticated imaging, planning, and delivery technologies for comprehensive cancer care.

    Seth Blacksburg - Senior Vice President, Chief Medical Officer

    Seth Blacksburg, the Senior Vice President, Chief Medical Officer at Accuray, provides critical clinical leadership and strategic medical guidance. Overseeing the integration of clinical insights into product development, Blacksburg ensures Accuray's advanced radiation oncology systems align with the evolving needs of cancer care professionals. This role involves advising on treatment efficacy, patient safety, and the clinical application of Accuray's innovative medical devices designed for precise tumor targeting. By bridging the gap between clinical practice and technological innovation, Seth Blacksburg directly enhances the value and impact of Accuray's solutions. Blacksburg's medical expertise is essential for refining the sophisticated imaging, planning, and delivery technologies that support comprehensive cancer care, ultimately improving patient outcomes and minimizing exposure to surrounding healthy tissue.
    Seth Blacksburg

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    Frequently Asked Questions Regarding Accuray Top Executives and Leadership Team

    Who leads Accuray?
    Accuray is led by Ali Pervaiz (Senior Vice President - Chief Financial Officer), along with executives such as Johannes Diebold (President & General Manager (Asia Pacific)) and Nancy Hiller (President & General Manager (Americas)).
    Who is part of Accuray’s executive team?
    The executive team of Accuray includes leaders such as Ali Pervaiz (Senior Vice President - Chief Financial Officer), Johannes Diebold (President & General Manager (Asia Pacific)), Nancy Hiller (President & General Manager (Americas)) and other senior executives.
    How many executives does Accuray have?
    Accuray has 6 executives leading key business areas.
    What roles are included in Accuray’s leadership team?
    The leadership team of Accuray includes roles such as Senior Vice President - Chief Financial Officer, President & General Manager (Asia Pacific), President & General Manager (Americas), Region President & General Manager (Japan), Senior Vice President, Chief Human Resources Officer.