Stony Brook Medicine Executive and Leadership Team

May, 2026

Leadership Overview

Stony Brook Medicine has 10 executives leading key functions including revenue, technology, operations, strategy, and medical affairs.

Driven by a commitment to exceptional care, Stony Brook Medicine upholds a long tradition of compassion and excellence on the East End, providing comprehensive specialty programs and accessible satellite facilities.

Leadership Roles at Stony Brook Medicine

  • Chief Executive Officer, End Respiratory Therapy PC (East) - Shari Hymes
  • Office of Chief Operating Officer - Nadia Cerro
  • President of RSOM Faculty Senate - Andrew Feit
  • President, Chapter Uup Stony Brook Health Sciences Center Chapter - Bruce Kube
  • President - Joseph Manzella
  • Chief Revenue Officer - Brian Fullerton
  • Chief Technology Officer - Dennis Gallagher
  • Chief of Staff To the Executive Vice President of Stony Brook Medicine - Michael Arens
  • Chief Medical Officer - Johnathan Buscaglia
  • Associate Chief Medical Officer - Sadia Abbasi
  • Shari Hymes - Chief Executive Officer, End Respiratory Therapy PC (East)

    Shari Hymes, the Chief Executive Officer, End Respiratory Therapy PC (East) at Stony Brook Medicine, directs the strategic vision and operational management of respiratory therapy services. Hymes oversees the delivery of specialized respiratory care, ensuring the highest standards of patient treatment and clinical outcomes. This leadership involves managing a team of dedicated respiratory therapists, implementing advanced treatment protocols, and fostering a culture of continuous improvement. The Chief Executive Officer, End Respiratory Therapy PC (East) is responsible for the financial performance, regulatory compliance, and overall growth of the respiratory therapy division. Hymes collaborates with other medical leaders to integrate respiratory care seamlessly into broader patient treatment plans. By championing innovation and excellence in respiratory medicine, Shari Hymes significantly contributes to Stony Brook Medicine's comprehensive approach to patient well-being and its commitment to providing exceptional healthcare services on the East End.
    Shari Hymes

    Nadia Cerro - Office of Chief Operating Officer

    Nadia Cerro, the Office of Chief Operating Officer at Stony Brook Medicine, supports the strategic execution of operational initiatives across the healthcare system. Cerro manages key projects and programs designed to enhance efficiency, optimize resource allocation, and improve patient experience. This role involves coordinating cross-departmental efforts, ensuring alignment with organizational goals, and driving process improvements throughout the hospital and its satellite facilities. The Office of Chief Operating Officer plays a crucial part in implementing operational strategies that support Stony Brook Medicine's commitment to exceptional care and accessibility on the East End. Cerro works closely with various stakeholders to facilitate smooth operations and address challenges proactively. By streamlining workflows and improving service delivery, Nadia Cerro contributes directly to the hospital's reputation for excellence and its ability to serve the community effectively. This operational support is vital for Stony Brook Medicine's sustained success.

    Andrew Feit - President of RSOM Faculty Senate

    Andrew Feit, the President of RSOM Faculty Senate at Stony Brook Medicine, represents the faculty's interests and contributes to academic governance within the Renaissance School of Medicine. Feit advocates for faculty members, ensuring their perspectives are considered in institutional decision-making processes. This leadership position involves fostering collaboration between faculty, administration, and students to enhance the educational and research environment. The President of RSOM Faculty Senate plays a key role in promoting academic excellence, supporting faculty development, and addressing concerns related to teaching, research, and clinical practice. Andrew Feit works to uphold the standards of the medical school and contribute to its mission of advancing medical knowledge and patient care. Feit's dedication to faculty welfare and academic integrity supports Stony Brook Medicine's broader commitment to excellence in healthcare and education.

    Bruce Kube - President, Chapter Uup Stony Brook Health Sciences Center Chapter

    Bruce Kube, the President, Chapter Uup Stony Brook Health Sciences Center Chapter at Stony Brook Medicine, leads the United University Professions (UUP) chapter representing academic and professional staff. Kube advocates for the rights and interests of UUP members, focusing on fair labor practices, professional development, and workplace conditions. This role involves engaging with university administration to negotiate contracts and resolve grievances, ensuring a supportive environment for employees. The President, Chapter Uup Stony Brook Health Sciences Center Chapter plays a vital part in fostering a strong and collaborative community within the Health Sciences Center. Bruce Kube's leadership contributes to the well-being and professional growth of the staff, which in turn supports Stony Brook Medicine's mission of providing exceptional healthcare and advancing medical research. Kube's efforts ensure that the dedicated professionals at Stony Brook Medicine are recognized and supported.

    Joseph Manzella - President

    Joseph Manzella, the President at Stony Brook Medicine, directs the overall strategic direction and operational management of the healthcare institution. Manzella oversees all facets of the organization, ensuring its continued success in providing comprehensive medical services and advancing healthcare innovation. This leadership role involves fostering strong relationships with stakeholders, including medical staff, patients, and community partners, to uphold Stony Brook Medicine's commitment to exceptional care. The President is responsible for financial oversight, strategic planning, and ensuring the organization meets its mission objectives. Joseph Manzella drives initiatives that enhance patient experience, improve clinical outcomes, and expand access to healthcare services on the East End. Manzella's leadership is fundamental to maintaining Stony Brook Medicine's reputation for excellence and its dedication to serving the health needs of the community.

    Brian Fullerton - Chief Revenue Officer

    Brian Fullerton, the Chief Revenue Officer at Stony Brook Medicine, directs all revenue-generating activities and financial strategies. Fullerton oversees the optimization of revenue cycles, ensuring maximum financial performance across all clinical departments and service lines. This leadership involves analyzing market trends, identifying new revenue streams, and implementing innovative financial models to support the organization's growth objectives. Fullerton collaborates closely with clinical leadership and administrative teams to align financial goals with patient care delivery. The Chief Revenue Officer's responsibilities extend to managing payer relationships and negotiating contracts to secure favorable terms. By driving efficiency in billing and collections, Fullerton ensures the financial health of Stony Brook Medicine, directly impacting its capacity to invest in advanced medical technologies and expand patient services. Brian Fullerton's strategic financial oversight is critical to sustaining the hospital's mission of providing exceptional healthcare.
    Brian Fullerton

    Dennis Gallagher - Chief Technology Officer

    Dennis Gallagher, the Chief Technology Officer at Stony Brook Medicine, architects and executes the organization's comprehensive technology strategy. Gallagher oversees all aspects of information technology infrastructure, digital transformation initiatives, and cybersecurity measures. This role involves ensuring the seamless integration of advanced medical technologies, electronic health records, and data analytics platforms to enhance patient care and operational efficiency. The Chief Technology Officer drives innovation by exploring emerging technologies that can improve diagnostic capabilities, streamline clinical workflows, and enhance patient engagement. Gallagher collaborates with department heads to identify technological needs and implement solutions that support Stony Brook Medicine's mission. Ensuring data integrity and patient privacy are paramount, with robust systems in place to protect sensitive information. Dennis Gallagher's leadership in technology is fundamental to Stony Brook Medicine's commitment to cutting-edge healthcare delivery and operational excellence.
    Dennis Gallagher

    Michael Arens - Chief of Staff To the Executive Vice President of Stony Brook Medicine

    Michael Arens, the Chief of Staff To the Executive Vice President of Stony Brook Medicine, provides critical support in managing strategic initiatives and operational priorities. Arens acts as a key liaison, facilitating communication and coordination between the Executive Vice President and various departments, clinical teams, and external partners. This role involves overseeing special projects, conducting research, and preparing reports to inform executive decision-making. The Chief of Staff To the Executive Vice President of Stony Brook Medicine ensures that organizational objectives are effectively translated into actionable plans and that progress is monitored closely. Arens plays an integral part in driving the strategic agenda of Stony Brook Medicine, contributing to its mission of delivering compassionate and high-quality healthcare. Michael Arens's support is essential for the efficient functioning of executive leadership and the advancement of the hospital's goals.

    Johnathan Buscaglia - Chief Medical Officer

    Johnathan Buscaglia, the Chief Medical Officer at Stony Brook Medicine, leads the clinical strategy and ensures the delivery of high-quality patient care across the organization. Buscaglia oversees all medical staff, clinical departments, and patient safety initiatives, upholding the highest standards of medical practice. This critical role involves setting clinical policies, promoting evidence-based medicine, and fostering a culture of excellence among physicians and healthcare providers. The Chief Medical Officer is instrumental in driving clinical innovation, improving patient outcomes, and ensuring compliance with all regulatory requirements. Johnathan Buscaglia collaborates closely with hospital administration and other executive leaders to align medical operations with the overall mission of Stony Brook Medicine. By championing patient-centered care and medical integrity, Buscaglia significantly contributes to the hospital's reputation for exceptional healthcare services on the East End.

    Sadia Abbasi - Associate Chief Medical Officer

    Sadia Abbasi, the Associate Chief Medical Officer at Stony Brook Medicine, supports the Chief Medical Officer in overseeing clinical operations and ensuring the highest standards of patient care. Abbasi assists in developing and implementing clinical policies, enhancing patient safety protocols, and promoting evidence-based medical practices throughout the organization. This role involves collaborating with medical staff, department chairs, and administrative leaders to drive quality improvement initiatives and optimize patient outcomes. The Associate Chief Medical Officer plays a crucial part in fostering a culture of clinical excellence and continuous learning within Stony Brook Medicine. Sadia Abbasi contributes to strategic planning for medical services, ensuring alignment with the hospital's mission and community needs. By supporting the Chief Medical Officer, Abbasi helps maintain the integrity and effectiveness of medical services, reinforcing Stony Brook Medicine's commitment to compassionate and advanced healthcare.

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    Frequently Asked Questions Regarding Stony Brook Medicine Top Executives and Leadership Team

    Who leads Stony Brook Medicine?
    Stony Brook Medicine is led by Shari Hymes (Chief Executive Officer, End Respiratory Therapy PC (East)), along with executives such as Nadia Cerro (Office of Chief Operating Officer) and Andrew Feit (President of RSOM Faculty Senate).
    Who is part of Stony Brook Medicine’s executive team?
    The executive team of Stony Brook Medicine includes leaders such as Shari Hymes (Chief Executive Officer, End Respiratory Therapy PC (East)), Nadia Cerro (Office of Chief Operating Officer), Andrew Feit (President of RSOM Faculty Senate) and other senior executives.
    How many executives does Stony Brook Medicine have?
    Stony Brook Medicine has 10 executives leading key business areas.
    What roles are included in Stony Brook Medicine’s leadership team?
    The leadership team of Stony Brook Medicine includes roles such as Chief Executive Officer, End Respiratory Therapy PC (East), Office of Chief Operating Officer, President of RSOM Faculty Senate, President, Chapter Uup Stony Brook Health Sciences Center Chapter, President.