Cook County Government Executive and Leadership Team

Jeannie Aguilar, the Chief Executive Officer at Cook County Government, directs the overarching strategy and vision for the county's extensive public services. Aguilar's leadership ensures the effective delivery of critical functions such as healthcare, legal services, public safety, property assessment, and tax collection across Illinois' most populous county. This executive role involves coordinating departmental efforts to implement policies that directly benefit county residents and manage public resources efficiently. Aguilar's strategic direction guides the organization's mission of comprehensive public service, maintaining multiple facilities and administrative offices throughout the region. The Chief Executive Officer's purview encompasses fostering interdepartmental collaboration to achieve operational excellence and uphold the government's commitment to its constituents. Jeannie Aguilar's influence extends to shaping the long-term goals and operational framework of the entire county administration.

John Hourihane, the Chief Financial Officer at Cook County Government, directs the fiscal health and financial strategy for the organization. Hourihane oversees all aspects of financial management, including budgeting, tax collection, revenue forecasting, and expenditure control for essential public services. This critical role ensures the responsible stewardship of public funds, supporting healthcare, legal services, public safety, and administrative operations. The Chief Financial Officer develops financial policies and procedures to maintain fiscal integrity and compliance across all county departments. Hourihane's responsibilities include managing the county's financial reporting, investment strategies, and debt management. John Hourihane ensures that Cook County Government operates with financial prudence, supporting its mission to serve residents effectively and sustainably.

Dean Constantinou, the Deputy Chief Financial Officer at Cook County Government, assists in managing the fiscal operations and financial planning for the county. Constantinou supports the Chief Financial Officer in overseeing budgeting, financial reporting, and the allocation of resources for essential public services like healthcare and public safety. This role is crucial for ensuring financial compliance, managing tax collection processes, and maintaining the integrity of public funds. The Deputy Chief Financial Officer contributes to developing financial strategies that support the county's mission and operational needs. Dean Constantinou plays a key part in upholding the financial stability and responsible management of Cook County Government's resources.

Ashley Ramchandani, the Deputy Chief Financial Officer at Cook County Government, collaborates with the Chief Financial Officer to ensure robust financial management and oversight. Ramchandani supports the administration of county budgets, financial analysis, and the effective collection of taxes and revenues. This position is essential for maintaining fiscal discipline across departments providing healthcare, legal services, and public safety. The Deputy Chief Financial Officer contributes to the development and implementation of financial policies that ensure accountability and transparency. Ashley Ramchandani aids in optimizing financial resources to support the ongoing mission of public service and operational excellence within Cook County Government.

Thomas Glaser, the Chief Operating Officer at Cook County Government, manages the day-to-day operational execution of public services across the county. Glaser directs the efficient functioning of departments responsible for healthcare facilities, courts, public safety operations, and administrative offices. This executive focuses on optimizing resource allocation, streamlining workflows, and ensuring the seamless delivery of essential services to county residents. The Chief Operating Officer plays a pivotal role in implementing policies set forth by the Board of Commissioners, translating strategic objectives into actionable operational plans. Glaser's oversight extends to maintaining the functionality and accessibility of the county's numerous facilities. Thomas Glaser drives operational improvements that enhance the effectiveness and responsiveness of Cook County Government's extensive service network.

Kathleen Lynch, the Chief Technology Officer at Cook County Government, architects the technological infrastructure supporting essential public services. Lynch oversees the implementation and management of advanced technology solutions that enhance healthcare delivery, legal processes, public safety systems, and administrative efficiency. This role is critical in modernizing the county's digital capabilities, ensuring robust data management for property assessment and tax collection, and maintaining secure record-keeping systems. The Chief Technology Officer drives innovation in IT strategy, aligning technology investments with the county's mission to serve residents effectively. Lynch's responsibilities include evaluating emerging technologies, cybersecurity protocols, and digital transformation initiatives across all county departments. Kathleen Lynch ensures that Cook County Government leverages technology to improve service accessibility and operational effectiveness throughout the region.

Sean Johnson, the Chief Information Officer at Cook County Government, leads the strategic direction and management of the county's information systems and digital infrastructure. Johnson oversees the development and maintenance of IT services that support critical functions such as healthcare records, legal case management, public safety communications, and property assessment databases. This role is vital for ensuring data security, system reliability, and the efficient flow of information across all county departments. The Chief Information Officer champions digital transformation initiatives, enhancing the accessibility and effectiveness of public services for residents. Sean Johnson's leadership ensures that Cook County Government's technology investments align with its mission, promoting operational efficiency and robust data governance.

Joseph Fratto, the Chief of Staff at Cook County Government, serves as a principal advisor and key liaison for executive leadership. Fratto manages the coordination of strategic initiatives, ensuring alignment across various departments responsible for public services including healthcare, legal support, and public safety. This role involves facilitating communication between the Board of Commissioners and operational departments, overseeing special projects, and driving policy implementation. The Chief of Staff plays an integral part in optimizing the efficiency of administrative functions and supporting the overall mission of public service. Joseph Fratto's strategic oversight helps to streamline operations and enhance the effectiveness of Cook County Government's extensive service network.

William Bernstein, the Deputy Chief of Staff at Cook County Government, supports the Chief of Staff in executing strategic priorities and managing operational coordination. Bernstein assists in overseeing key projects and ensuring seamless communication between executive leadership and departmental teams responsible for public services. This role involves facilitating the implementation of policies related to healthcare, legal services, and public safety, contributing to the efficient delivery of county functions. The Deputy Chief of Staff aids in streamlining administrative processes and enhancing the overall effectiveness of Cook County Government's operations. William Bernstein contributes to the strategic management and operational integrity of the county's extensive service framework.

Daniel Korso, the Deputy Chief of Staff at Cook County Government, provides critical support to the Chief of Staff in driving organizational objectives and operational efficiency. Korso assists in coordinating cross-departmental efforts for essential services such as property assessment, tax collection, and record-keeping. This position is vital for ensuring the effective implementation of county policies and facilitating communication across administrative and public-facing functions. The Deputy Chief of Staff contributes to the strategic oversight of special projects and initiatives aimed at enhancing public service delivery. Daniel Korso supports the executive leadership in maintaining the operational integrity and responsiveness of Cook County Government.