Phoenix House Executive and Leadership Team

November, 2026

Leadership Overview

Phoenix House has 4 executives leading key functions including organizational strategy, operational management, legal compliance, and regional leadership.

Committed to transforming lives through comprehensive recovery services, Phoenix House delivers essential substance abuse treatment and support to individuals, families, and communities across the United States.

Leadership Roles at Phoenix House

  • President & Chief Executive Officer - Anne-Marie Foster
  • Chief Operating Officer - Gerald Sullivan
  • General Counsel & Chief Operating Officer - Mark White
  • President - David Thomas
  • Anne-Marie Foster - President & Chief Executive Officer

    Anne-Marie Foster, the President & Chief Executive Officer at Phoenix House, directs the overarching strategic vision for this nonprofit rehabilitation organization. Overseeing the delivery of substance abuse treatment services, the President & Chief Executive Officer ensures alignment between clinical standards and community needs. This leadership role involves managing complex stakeholder relationships and driving long-term sustainability for recovery programs. By optimizing organizational resources, Anne-Marie Foster directly impacts the quality of care provided to individuals and families struggling with dependency. Foster maintains rigorous oversight of clinical outcomes while expanding the reach of rehabilitation services across diverse regions. Through constant evaluation of treatment efficacy, the President & Chief Executive Officer secures the future of the organization. Ultimately, Foster champions the mission of fostering recovery and health within communities, ensuring that Phoenix House remains a leader in the addiction treatment sector.
    Anne-Marie Foster

    Gerald Sullivan - Chief Operating Officer

    Gerald Sullivan, the Chief Operating Officer at Phoenix House, manages the daily internal operations and infrastructure required to support comprehensive drug and alcohol rehabilitation programs. Overseeing the execution of clinical service delivery, the Chief Operating Officer ensures that facilities maintain high standards of care and operational efficiency. This leadership role involves coordinating with department heads to streamline patient intake processes and resource allocation. By refining internal workflows, Gerald Sullivan directly impacts the capacity of the organization to serve more individuals affected by substance abuse. Sullivan monitors performance metrics across all treatment centers to guarantee consistent service quality. Through the implementation of scalable operational models, the Chief Operating Officer supports the broader mission of the organization. Ultimately, Sullivan drives the operational excellence necessary to sustain effective recovery environments for families and communities throughout the service network.

    Mark White - General Counsel & Chief Operating Officer

    Mark White, the General Counsel & Chief Operating Officer at Phoenix House, integrates legal oversight with the management of organizational logistics and risk mitigation. Overseeing the regulatory compliance framework, the General Counsel & Chief Operating Officer ensures that all rehabilitation services adhere to strict healthcare standards and legal requirements. This leadership role involves navigating complex policy landscapes to protect the integrity of the organization. By managing contractual obligations and operational risks, Mark White directly impacts the stability of the nonprofit. White collaborates with executive leadership to align legal strategies with the mission of providing accessible substance abuse treatment. Through the careful administration of corporate governance, the General Counsel & Chief Operating Officer maintains the operational foundation of the organization. Ultimately, White secures the legal and functional framework required to support the recovery of individuals and families across the entire service footprint.

    David Thomas - President

    David Thomas, the President at Phoenix House, leads specific regional initiatives and program development efforts aimed at expanding the reach of substance abuse rehabilitation services. Overseeing the implementation of community-based recovery models, the President ensures that local programs meet the unique needs of the populations served. This leadership role involves fostering partnerships with local health organizations and community stakeholders to enhance service accessibility. By driving regional growth strategies, David Thomas directly impacts the ability of the organization to provide support to families and individuals in need. Thomas monitors the effectiveness of regional outreach efforts and adjusts program delivery to maximize positive outcomes. Through the coordination of specialized treatment initiatives, the President strengthens the overall impact of the organization. Ultimately, Thomas advances the mission of Phoenix House by ensuring that high-quality recovery resources remain available to diverse communities.

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    Frequently Asked Questions Regarding Phoenix House Top Executives and Leadership Team

    Who leads Phoenix House?
    Phoenix House is led by Anne-Marie Foster (President & Chief Executive Officer), along with executives such as Gerald Sullivan (Chief Operating Officer) and Mark White (General Counsel & Chief Operating Officer).
    Who is part of Phoenix House’s executive team?
    The executive team of Phoenix House includes leaders such as Anne-Marie Foster (President & Chief Executive Officer), Gerald Sullivan (Chief Operating Officer), Mark White (General Counsel & Chief Operating Officer) and other senior executives.
    How many executives does Phoenix House have?
    Phoenix House has 4 executives leading key business areas.
    What roles are included in Phoenix House’s leadership team?
    The leadership team of Phoenix House includes roles such as President & Chief Executive Officer, Chief Operating Officer, General Counsel & Chief Operating Officer, President.