Accuray Executive and Leadership Team

September, 2026

Leadership Overview

Accuray has 6 executives leading key functions including financial strategy, human capital, clinical innovation, and regional market expansion.

Focused on advancing radiation oncology through precision technology, Accuray delivers sophisticated medical devices that enable clinicians to target tumors with exceptional accuracy while minimizing exposure to healthy tissue for patients globally.

Leadership Roles at Accuray

  • Senior Vice President - Chief Financial Officer - Ali Pervaiz
  • President & General Manager (Asia Pacific) - Johannes Diebold
  • President & General Manager (Americas) - Nancy Smithson-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 global financial operations and capital allocation strategies. Managing the fiscal health of the organization, the Chief Financial Officer oversees budgeting, investor relations, and long-term financial planning to support the development of advanced radiation oncology systems. Pervaiz ensures that resource distribution aligns with the company's mission to provide precise cancer treatment solutions. By analyzing market trends and operational costs, the Chief Financial Officer maintains the financial stability required for continuous innovation in medical device manufacturing. Ali Pervaiz also collaborates with the executive leadership team to evaluate investment opportunities in imaging and delivery technologies. Through rigorous financial oversight, Pervaiz secures the necessary capital to expand the reach of radiation oncology platforms into new international markets. This leadership role remains critical for sustaining growth and delivering value to shareholders while supporting the clinical needs of hospitals and cancer treatment centers worldwide.

    Johannes Diebold - President & General Manager (Asia Pacific)

    Johannes Diebold, the President & General Manager (Asia Pacific) at Accuray, drives commercial growth and operational expansion across the diverse markets of the Asia Pacific region. Overseeing sales, distribution, and clinical support, the President & General Manager (Asia Pacific) ensures that hospitals and cancer treatment centers have access to advanced radiation oncology systems. Diebold manages regional partnerships and regulatory compliance to facilitate the deployment of precision medical devices. By tailoring market strategies to local healthcare needs, the President & General Manager (Asia Pacific) increases the adoption of adaptive treatment planning platforms. Johannes Diebold also coordinates with global leadership to align regional performance with the company's overarching mission of improving clinical outcomes. Through the optimization of supply chains and service networks, Diebold enhances the availability of cancer care solutions in high-growth territories. This leadership role focuses on scaling operations to meet the rising demand for sophisticated radiotherapy technology while maintaining the high standards of accuracy required for complex tumor targeting.
    Johannes Diebold

    Nancy Smithson-Hiller - President & General Manager (Americas)

    Nancy Smithson-Hiller, the President & General Manager (Americas) at Accuray, directs all commercial activities and strategic initiatives throughout the North and South American markets. Overseeing the sales force and clinical application teams, the President & General Manager (Americas) ensures that healthcare providers receive comprehensive support for radiation oncology systems. Smithson-Hiller manages relationships with major hospital networks and specialized cancer centers to expand the footprint of precision treatment technology. By analyzing regional market dynamics, the President & General Manager (Americas) identifies opportunities to integrate real-time imaging and adaptive planning into existing clinical workflows. Nancy Smithson-Hiller also collaborates with the executive team to refine product positioning and service delivery models. Through the execution of targeted growth strategies, Smithson-Hiller improves patient access to advanced cancer care across the continent. This leadership role remains vital for maintaining market leadership and ensuring that medical teams possess the tools necessary to deliver precise, effective treatment while reducing potential side effects.
    Nancy Smithson-Hiller

    Kazuharu Tomari - Region President & General Manager (Japan)

    Kazuharu Tomari, the Region President & General Manager (Japan) at Accuray, oversees all business operations and strategic market development within the Japanese healthcare sector. Managing the local sales, service, and clinical support teams, the Region President & General Manager (Japan) ensures that radiation oncology facilities utilize the full capabilities of advanced medical devices. Tomari drives the adoption of precision radiotherapy platforms by aligning product features with the specific requirements of Japanese clinicians and regulatory bodies. By fostering strong relationships with key opinion leaders and medical institutions, the Region President & General Manager (Japan) strengthens the company's presence in this highly specialized market. Kazuharu Tomari also coordinates with global headquarters to implement adaptive treatment planning solutions that address the unique anatomical challenges of patients in the region. Through meticulous operational management, Tomari supports the delivery of high-quality cancer care. This leadership role focuses on sustaining long-term growth and ensuring that the company's technology remains the preferred choice for precise, effective tumor treatment.

    Melanie Rivers - Senior Vice President, Chief Human Resources Officer

    Melanie Rivers, the Senior Vice President, Chief Human Resources Officer at Accuray, architects the global talent strategy and organizational culture. Overseeing recruitment, leadership development, and employee engagement, the Chief Human Resources Officer ensures the workforce possesses the technical expertise required to manufacture complex radiation oncology systems. Rivers drives initiatives that foster innovation and operational excellence across all departments. By aligning human capital strategies with the company's mission of improving patient outcomes, the Chief Human Resources Officer supports a high-performance environment. Melanie Rivers also manages compensation structures and diversity programs to attract top-tier talent in the competitive medical device industry. Through strategic workforce planning, Rivers enables the organization to scale effectively while maintaining the specialized skills necessary for developing adaptive treatment planning software. This leadership role directly impacts the company's ability to attract professionals dedicated to advancing cancer care and enhancing the quality of life for patients through precise, technology-driven medical solutions.

    Seth Blacksburg - Senior Vice President, Chief Medical Officer

    Seth Blacksburg, the Senior Vice President, Chief Medical Officer at Accuray, leads clinical strategy and medical affairs for the entire product portfolio. Overseeing the integration of real-time imaging and adaptive treatment planning, the Chief Medical Officer ensures that all radiation oncology systems meet the highest standards of clinical efficacy. Blacksburg directs interactions with the medical community to validate the performance of devices in treating various cancer types, from brain tumors to abdominal malignancies. By bridging the gap between engineering and clinical practice, the Chief Medical Officer facilitates the development of solutions that minimize side effects for patients. Seth Blacksburg also provides medical guidance to the research and development teams, ensuring that new features address critical challenges in oncology. Through active engagement with global clinical leaders, Blacksburg promotes the adoption of precision radiotherapy. This leadership role remains essential for maintaining the company's reputation as a provider of innovative, patient-centered cancer treatment technologies.
    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 Smithson-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 Smithson-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.