Arc of Westchester Executive and Leadership Team

Tibi Guzman, the Chief Executive Officer at Arc of Westchester, directs the overarching strategic vision for the organization. Overseeing the delivery of essential services for children, teens, and adults with intellectual and developmental disabilities, the Chief Executive Officer ensures operational excellence across all programs. This leadership role involves constant collaboration with the Board to refine long-term goals and expand community outreach. By prioritizing the mission of inclusion, Tibi Guzman drives the development of new initiatives that enhance the quality of life for individuals served. The Chief Executive Officer maintains rigorous standards for service quality while navigating the complex regulatory landscape of non-profit operations. Through effective resource allocation and stakeholder engagement, the Chief Executive Officer secures the sustainability of vital support systems. Ultimately, the Chief Executive Officer champions the rights of the population served, ensuring that every program aligns with the core values of the organization.

Tibisay Guzman, the Executive Director, Chief Executive Officer at Arc of Westchester, manages the daily administrative functions and organizational infrastructure. Focusing on the operational execution of support programs, the Executive Director, Chief Executive Officer coordinates internal departments to maximize service efficiency. This role requires deep integration with clinical and support staff to ensure that every individual receives tailored care. Tibisay Guzman architects the internal policies that govern service delivery, ensuring compliance with state and federal mandates. By streamlining workflows and optimizing staff performance, the Executive Director, Chief Executive Officer strengthens the capacity of the organization to meet growing demand. The Executive Director, Chief Executive Officer also facilitates communication between the leadership team and frontline workers to maintain a cohesive culture. Through consistent monitoring of program outcomes, the Executive Director, Chief Executive Officer drives continuous improvement in the quality of care provided to the community.

Soosan Tehrani, the Chief Financial Officer at Arc of Westchester, oversees the fiscal health and long-term financial planning of the organization. Managing the complex budget requirements for non-profit operations, the Chief Financial Officer ensures that resources remain directed toward high-impact programs for individuals with developmental disabilities. This leadership role involves rigorous oversight of grant funding, donor contributions, and government reimbursements. Soosan Tehrani architects financial strategies that support the expansion of service capacity while maintaining strict fiscal discipline. By analyzing economic trends and operational costs, the Chief Financial Officer provides the data necessary for the Board to make informed decisions regarding future investments. The Chief Financial Officer also manages audit processes and financial reporting to ensure full transparency and regulatory compliance. Through prudent management of assets and liabilities, the Chief Financial Officer secures the financial foundation required to sustain the mission of the organization for years to come.

Mark Glucksman, the President Elect at Arc of Westchester, prepares for the transition into primary board leadership while guiding current governance initiatives. Overseeing the alignment of board activities with the long-term mission of the organization, the President Elect ensures that strategic priorities remain focused on the needs of individuals with intellectual and developmental disabilities. This role involves facilitating communication between the Board and the executive leadership team to foster a unified approach to organizational growth. Mark Glucksman architects governance frameworks that promote accountability and ethical decision-making. By engaging with community partners and stakeholders, the President Elect expands the influence of the organization within the broader non-profit sector. The President Elect also evaluates the effectiveness of current board policies to ensure they support the evolving requirements of the population served. Through dedicated leadership and strategic foresight, the President Elect strengthens the governance structure to support the future success of the organization.