HSS Executive and Leadership Team

Williams Michael, the Chief Executive Officer at HSS, directs the overarching strategic vision for the world's preeminent musculoskeletal hospital. This leadership role involves managing complex academic medical center operations while ensuring the institution maintains its historical commitment to orthopedic excellence. By aligning clinical research with patient care delivery, the Chief Executive Officer drives growth across North American markets. Williams Michael oversees the integration of advanced surgical training programs with daily hospital functions, ensuring that medical staff remain at the forefront of the industry. The Chief Executive Officer collaborates with the Board to secure long-term financial stability and operational efficiency. Through rigorous oversight of institutional resources, the Chief Executive Officer fosters an environment where surgical innovation thrives. This executive leadership ensures that the hospital remains a global leader in musculoskeletal health, consistently setting standards for patient outcomes and medical education.

Lisa Valerioti, the Executive Administrator & Office of The President & Chief Executive Officer at HSS, manages the daily operational flow within the executive suite. This role involves coordinating high-level communications between the President and various clinical departments to ensure organizational alignment. By streamlining administrative processes, the Executive Administrator & Office of The President & Chief Executive Officer enhances the efficiency of the leadership team. Lisa Valerioti facilitates critical decision-making cycles that support the hospital's mission of orthopedic excellence. The Executive Administrator & Office of The President & Chief Executive Officer monitors institutional performance metrics to provide actionable insights for the executive leadership. Through meticulous management of the President's agenda, the Executive Administrator & Office of The President & Chief Executive Officer ensures that strategic priorities receive immediate attention. This position remains vital for maintaining the operational rhythm necessary for a major academic medical center to function effectively.

Noareen Ahmed, the Chief of Staff To the President and Chief Executive Officer at HSS, serves as the primary liaison for the executive office. This role involves managing the flow of information and strategic priorities between the President and the broader leadership team. By facilitating cross-departmental collaboration, the Chief of Staff To the President and Chief Executive Officer ensures that organizational goals remain clear and actionable. Noareen Ahmed oversees the preparation of executive briefings and monitors the progress of key institutional initiatives. The Chief of Staff To the President and Chief Executive Officer coordinates high-level meetings to drive consensus on critical business decisions. Through proactive management of the executive agenda, the Chief of Staff To the President and Chief Executive Officer enables the leadership team to focus on long-term growth and patient care excellence. This position remains vital for maintaining organizational cohesion within the academic medical center.

Mary Manwell, the Chief Financial Officer at HSS, manages the fiscal health and capital allocation strategies for the organization. This role involves overseeing revenue cycle management, budgeting, and long-term financial planning to support the hospital's mission as a global leader in musculoskeletal care. By analyzing market trends and operational costs, the Chief Financial Officer ensures that resources remain directed toward high-impact clinical research and patient services. Mary Manwell collaborates with other C-suite leaders to evaluate the financial viability of new medical technologies and facility expansions. The Chief Financial Officer maintains rigorous compliance standards while optimizing the financial structure of the academic medical center. Through strategic oversight of investments, the Chief Financial Officer secures the capital necessary for ongoing innovation. This leadership role directly impacts the ability of the hospital to maintain its status as the preeminent musculoskeletal institution in the world.

Caloy Penz, the Chief Operating Officer at HSS, focuses on the internal scaling and infrastructure optimization of the hospital's physical facilities. This role involves managing the logistical requirements of high-volume surgical centers to ensure maximum throughput and patient safety. By refining operational workflows, the Chief Operating Officer enhances the efficiency of clinical support services across the campus. Caloy Penz coordinates with department heads to implement standardized protocols that improve the quality of care delivery. The Chief Operating Officer monitors facility utilization rates to identify opportunities for capacity expansion. Through the application of lean management principles, the Chief Operating Officer reduces waste and improves the overall patient experience. This leadership role ensures that the hospital's physical environment supports the complex needs of orthopedic surgeons and their patients, maintaining the institution's reputation for excellence in a competitive healthcare landscape.

Mary Cassai, the Chief Operating Officer & Executive Vice President at HSS, directs the supply chain logistics and procurement strategies for the entire medical center. This role involves managing complex vendor relationships and ensuring the availability of specialized orthopedic implants and surgical equipment. By optimizing inventory management systems, the Chief Operating Officer & Executive Vice President minimizes costs while ensuring that surgeons have access to the latest medical technology. Mary Cassai oversees the integration of supply chain data with clinical outcomes to drive operational improvements. The Chief Operating Officer & Executive Vice President collaborates with the finance department to negotiate contracts that support the hospital's long-term fiscal goals. Through strategic oversight of procurement, the Chief Operating Officer & Executive Vice President ensures that the hospital maintains its competitive edge in musculoskeletal care. This leadership role remains essential for sustaining the high-quality standards expected at this academic medical center.

Melissa Litwack, the Senior Director of Intake and Portfolio Office. Chief of Staff To the Chief Digital Strategy Officer at HSS, manages the intake processes for digital health initiatives. This role involves prioritizing the portfolio of technology projects that support the hospital's digital transformation. By aligning digital strategy with clinical needs, the Senior Director of Intake and Portfolio Office. Chief of Staff To the Chief Digital Strategy Officer ensures that technological investments yield measurable improvements in patient care. Melissa Litwack coordinates the workflow between the digital strategy team and clinical departments to facilitate the adoption of new software solutions. The Senior Director of Intake and Portfolio Office. Chief of Staff To the Chief Digital Strategy Officer monitors project timelines and resource allocation to ensure successful delivery. This leadership role bridges the gap between technical innovation and practical application, supporting the hospital's mission to remain at the forefront of musculoskeletal medicine.

John Cox, the Vice President & Chief Information Officer at HSS, architects the scalable cloud infrastructure and cybersecurity frameworks necessary for a modern academic medical center. This role involves overseeing the implementation of electronic health records and data management systems that support orthopedic research. By ensuring the integrity and accessibility of patient data, the Vice President & Chief Information Officer enables clinicians to make informed decisions. John Cox leads the digital transformation efforts that integrate advanced analytics into the hospital's daily operations. The Vice President & Chief Information Officer collaborates with the clinical leadership to deploy technology that enhances patient outcomes. Through the strategic management of IT resources, the Vice President & Chief Information Officer protects the hospital's digital assets while fostering innovation. This leadership role ensures that the institution maintains a robust technological foundation, supporting its status as a global leader in musculoskeletal health.

Mary Mcmahon, the Chief of Staff & Office of The Chief Data & Analytics Officer at HSS, manages the operational framework for the data and analytics division. This role involves coordinating the efforts of data scientists and clinical researchers to extract actionable insights from patient outcomes. By streamlining the communication between the analytics team and hospital leadership, the Chief of Staff & Office of The Chief Data & Analytics Officer ensures that data-driven strategies inform clinical practice. Mary Mcmahon oversees the project management of large-scale data initiatives that support the hospital's research mission. The Chief of Staff & Office of The Chief Data & Analytics Officer facilitates the integration of analytics into the decision-making process for patient care. Through meticulous oversight of the office's operations, the Chief of Staff & Office of The Chief Data & Analytics Officer enables the institution to leverage its vast clinical data for continuous improvement.

Sheeraz Qureshi, the Chief Medical Officer at HSS, directs the clinical standards and medical quality initiatives across the entire hospital. This role involves overseeing the performance of orthopedic surgeons and ensuring that patient care adheres to the highest evidence-based protocols. By fostering a culture of continuous learning, the Chief Medical Officer drives the academic mission of the institution. Sheeraz Qureshi collaborates with the executive team to implement new surgical techniques that improve patient recovery times. The Chief Medical Officer monitors clinical outcomes to identify areas for quality improvement and professional development. Through the leadership of the medical staff, the Chief Medical Officer ensures that the hospital maintains its reputation as the preeminent musculoskeletal center in the world. This executive role remains essential for balancing clinical excellence with the demands of a major academic medical center, ultimately supporting the hospital's commitment to superior patient care.