Arc of Westchester Executive and Leadership Team

November, 2026

Leadership Overview

Arc of Westchester has 4 executives leading key functions including organizational strategy, executive leadership, financial management, and board governance.

Committed to empowering individuals with intellectual and developmental disabilities, Arc of Westchester delivers comprehensive support services while fostering inclusive communities through dedicated advocacy and innovative programming across the region.

Leadership Roles at Arc of Westchester

  • Chief Executive Officer - Tibi Guzman
  • Executive Director, Chief Executive Officer - Tibisay Guzman
  • Chief Financial Officer - Soosan Tehrani
  • President & Board of Directors - Bernard Krooks
  • Tibi Guzman - Chief Executive Officer

    Tibi Guzman, the Chief Executive Officer at Arc of Westchester, directs the overarching mission to support children, teens, and adults with intellectual and developmental disabilities. Overseeing the strategic vision, the Chief Executive Officer ensures that all programs align with the non-profit organization's long-term goals for community integration. This leadership role involves managing complex stakeholder relationships and driving operational excellence across all service departments. By prioritizing resource allocation and program efficacy, Tibi Guzman directly impacts the quality of life for thousands of individuals throughout the New York region. The Chief Executive Officer maintains rigorous standards for service delivery while navigating the evolving landscape of disability support services. Through consistent engagement with the Board of Directors, the Chief Executive Officer secures the necessary funding and community partnerships to sustain the organization's vital work, ultimately ensuring that the mission remains at the forefront of every operational decision.

    Tibisay Guzman - Executive Director, Chief Executive Officer

    Tibisay Guzman, the Executive Director, Chief Executive Officer at Arc of Westchester, manages the daily operational execution of programs designed for individuals with intellectual and developmental disabilities. Focusing on internal scaling, the Executive Director, Chief Executive Officer optimizes service workflows to increase the reach of support initiatives across the organization. This role requires constant collaboration with department heads to ensure that clinical and educational services meet the highest standards of care. By streamlining administrative processes, Tibisay Guzman enhances the efficiency of the non-profit's service delivery model. The Executive Director, Chief Executive Officer also monitors regional performance metrics to identify opportunities for program expansion and improvement. Through meticulous oversight of staff training and development, the Executive Director, Chief Executive Officer builds a culture of excellence that directly supports the organization's commitment to fostering independence and inclusion for all participants within the broader community.

    Soosan Tehrani - Chief Financial Officer

    Soosan Tehrani, the Chief Financial Officer at Arc of Westchester, architects the financial strategy necessary to sustain the organization's support services for individuals with intellectual and developmental disabilities. Overseeing fiscal planning, the Chief Financial Officer ensures the long-term stability of the non-profit through rigorous budget management and revenue diversification. This leadership role involves analyzing complex financial data to inform strategic decisions regarding resource allocation and capital investments. By maintaining strict compliance with regulatory standards, Soosan Tehrani protects the financial integrity of the organization. The Chief Financial Officer collaborates closely with the executive team to align financial goals with the mission-driven objectives of the company. Through the implementation of robust financial controls, the Chief Financial Officer supports the expansion of programs across the region, ensuring that every dollar contributes directly to the empowerment and well-being of the individuals served by the organization.

    Bernard Krooks - President & Board of Directors

    Bernard Krooks, the President & Board of Directors at Arc of Westchester, governs the strategic direction and policy framework for the organization. Overseeing board activities, the President & Board of Directors ensures that the non-profit remains accountable to the community and the individuals with intellectual and developmental disabilities served by the mission. This leadership role involves facilitating high-level discussions regarding organizational growth and long-term sustainability. By providing expert guidance on governance and legal compliance, Bernard Krooks strengthens the foundation of the organization. The President & Board of Directors works in tandem with the executive leadership team to translate vision into actionable policy. Through active engagement with stakeholders and community leaders, the President & Board of Directors champions the cause of disability advocacy, ensuring that the organization maintains its reputation as a leader in the field while consistently delivering impactful services across the region.

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    Frequently Asked Questions Regarding Arc of Westchester Top Executives and Leadership Team

    Who leads Arc of Westchester?
    Arc of Westchester is led by Tibi Guzman (Chief Executive Officer), along with executives such as Tibisay Guzman (Executive Director, Chief Executive Officer) and Soosan Tehrani (Chief Financial Officer).
    Who is part of Arc of Westchester’s executive team?
    The executive team of Arc of Westchester includes leaders such as Tibi Guzman (Chief Executive Officer), Tibisay Guzman (Executive Director, Chief Executive Officer), Soosan Tehrani (Chief Financial Officer) and other senior executives.
    How many executives does Arc of Westchester have?
    Arc of Westchester has 4 executives leading key business areas.
    What roles are included in Arc of Westchester’s leadership team?
    The leadership team of Arc of Westchester includes roles such as Chief Executive Officer, Executive Director, Chief Executive Officer, Chief Financial Officer, President & Board of Directors.