Acadia Healthcare Executive and Leadership Team

September, 2026

Leadership Overview

Acadia Healthcare has 10 executives leading key functions including corporate strategy, regional behavioral health operations, financial oversight, and clinical facility management.

Committed to expanding access to specialized mental health treatment, Acadia Healthcare delivers comprehensive, patient-centered care for individuals facing substance use disorders and complex behavioral health challenges across a national network.

Leadership Roles at Acadia Healthcare

  • Chief Executive Officer - Debbie Osteen
  • Chief Executive Officer, At Tennessee Behavioral Health (East) - Kelly George
  • Chief Financial Officer - Christopher Mann
  • Group Chief Financial Officer, Operations - Michael Ferguson
  • Regional Chief Financial Officer - Tina Tawes
  • Chief Financial Officer, Training - Nick York
  • Group Chief Financial Officer - Hunter Ross
  • Group Chief Financial Officer - Irene Marianos
  • Division Chief Financial Officer - Andrew Vereecke
  • CTC Chief Operating Officer - Erin McCarthy
  • Debbie Osteen - Chief Executive Officer

    Debbie Osteen, the Chief Executive Officer at Acadia Healthcare, directs the overarching strategic vision for the organization. Overseeing the entire network of behavioral health facilities, the Chief Executive Officer ensures the delivery of high-quality, patient-centered care for individuals with mental health conditions and substance use disorders. This leadership role involves constant collaboration with the Board to drive long-term growth and operational excellence across the United States. By prioritizing clinical outcomes and facility expansion, Osteen maintains the company's position as a leader in the behavioral healthcare sector. The Chief Executive Officer also manages relationships with key stakeholders to support the mission of providing specialized treatment. Through rigorous oversight of corporate initiatives, Debbie Osteen secures the financial and operational health of the organization, ensuring that every facility meets the highest standards of care for patients navigating complex behavioral health challenges.

    Kelly George - Chief Executive Officer, At Tennessee Behavioral Health (East)

    Kelly George, the Chief Executive Officer, At Tennessee Behavioral Health (East) at Acadia Healthcare, manages all clinical and administrative operations within the eastern regional network. Overseeing the daily functions of specialized treatment facilities, the Chief Executive Officer, At Tennessee Behavioral Health (East) ensures that patient care protocols align with the company's broader commitment to behavioral health excellence. This role involves coordinating with regional clinical directors to optimize treatment outcomes for individuals experiencing substance use disorders. By driving operational efficiency across the Tennessee market, George strengthens the regional presence of the organization. The Chief Executive Officer, At Tennessee Behavioral Health (East) also monitors facility performance metrics to guarantee compliance and quality standards. Through strategic resource allocation and local market engagement, Kelly George fosters a supportive environment for patients, directly impacting the success of the company's specialized behavioral health services in the region.

    Christopher Mann - Chief Financial Officer

    Christopher Mann, the Chief Financial Officer at Acadia Healthcare, architects the financial strategy and capital allocation plans for the entire organization. Overseeing fiscal reporting, budgeting, and investor relations, the Chief Financial Officer ensures the company maintains a robust balance sheet to support the expansion of behavioral health facilities. This leadership role involves working closely with the executive team to evaluate investment opportunities in new treatment centers and service lines. By managing financial risk and optimizing capital structure, Mann supports the long-term sustainability of the company's mission. The Chief Financial Officer also directs the internal audit and tax functions to ensure full regulatory compliance across all operations. Through precise financial forecasting and performance analysis, Christopher Mann provides the necessary data to drive strategic decision-making, ultimately enabling the organization to deliver specialized care to more patients across the national network.

    Michael Ferguson - Group Chief Financial Officer, Operations

    Michael Ferguson, the Group Chief Financial Officer, Operations at Acadia Healthcare, manages the financial performance of the company's diverse operational units. Overseeing the integration of financial data with facility-level performance, the Group Chief Financial Officer, Operations ensures that each treatment center operates within budgetary constraints while maintaining high standards of patient care. This role involves analyzing operational costs and identifying efficiencies to improve the profitability of behavioral health services. By collaborating with regional operational leaders, Ferguson aligns financial goals with the company's clinical objectives. The Group Chief Financial Officer, Operations also monitors key performance indicators to track the success of various treatment programs. Through rigorous financial oversight and process improvement, Michael Ferguson supports the organization's ability to scale its services effectively, ensuring that resources are directed toward the most impactful areas of behavioral healthcare delivery.

    Tina Tawes - Regional Chief Financial Officer

    Tina Tawes, the Regional Chief Financial Officer at Acadia Healthcare, directs the financial planning and analysis for specific geographic territories. Overseeing the regional budget and revenue cycle management, the Regional Chief Financial Officer ensures that local facilities have the necessary resources to provide specialized treatment for mental health and substance use disorders. This role involves coordinating with facility administrators to monitor expense trends and improve operational margins. By providing financial guidance to regional leadership, Tawes supports the successful execution of the company's growth strategy in key markets. The Regional Chief Financial Officer also evaluates the financial viability of new service offerings within the region. Through detailed reporting and proactive financial management, Tina Tawes ensures that regional operations remain aligned with the company's overall fiscal objectives, ultimately contributing to the stability and expansion of the organization's behavioral health network.

    Nick York - Chief Financial Officer, Training

    Nick York, the Chief Financial Officer, Training at Acadia Healthcare, manages the financial aspects of the company's professional development and clinical training programs. Overseeing the budget for educational initiatives, the Chief Financial Officer, Training ensures that staff members receive the necessary training to deliver high-quality behavioral health services. This role involves allocating funds to support evidence-based treatment methodologies and compliance training across the organization. By optimizing the financial investment in human capital, York enhances the overall quality of care provided at all facilities. The Chief Financial Officer, Training also tracks the return on investment for various training programs to ensure alignment with corporate goals. Through strategic financial planning for educational resources, Nick York supports the continuous improvement of clinical skills, which directly impacts the effectiveness of the company's treatment programs for individuals with behavioral health challenges.

    Hunter Ross - Group Chief Financial Officer

    Hunter Ross, the Group Chief Financial Officer at Acadia Healthcare, directs the financial strategy for a specific portfolio of behavioral health facilities. Overseeing the financial reporting and performance analysis for these units, the Group Chief Financial Officer ensures that each facility meets its revenue and profitability targets. This role involves working with facility leadership to manage operational costs and improve the efficiency of patient care delivery. By providing strategic financial insights, Ross supports the growth and development of the assigned facility group. The Group Chief Financial Officer also coordinates with the corporate finance team to ensure consistency in financial practices and reporting standards. Through diligent monitoring of financial metrics and proactive problem-solving, Hunter Ross ensures that the assigned group of facilities contributes positively to the company's overall financial health and mission of providing specialized behavioral healthcare services.

    Irene Marianos - Group Chief Financial Officer

    Irene Marianos, the Group Chief Financial Officer at Acadia Healthcare, directs the financial operations for a distinct segment of the company's behavioral health facilities. Overseeing the financial health of these units, the Group Chief Financial Officer ensures that resources are effectively utilized to support patient care and facility growth. This role involves analyzing financial performance data to identify opportunities for cost reduction and revenue enhancement. By providing financial leadership to facility managers, Marianos ensures that operational decisions are data-driven and aligned with corporate strategy. The Group Chief Financial Officer also manages the budgeting process for the assigned group, ensuring that financial targets are met. Through consistent monitoring and strategic financial oversight, Irene Marianos contributes to the overall success of the organization, ensuring that the company remains well-positioned to provide specialized treatment for individuals with mental health and substance use disorders.

    Andrew Vereecke - Division Chief Financial Officer

    Andrew Vereecke, the Division Chief Financial Officer at Acadia Healthcare, manages the financial strategy for a specific division within the company's behavioral health network. Overseeing the division's financial planning, budgeting, and performance reporting, the Division Chief Financial Officer ensures that all facilities within the division operate efficiently and effectively. This role involves working with divisional leadership to optimize resource allocation and support the delivery of high-quality patient care. By analyzing financial trends and operational metrics, Vereecke identifies opportunities for growth and improvement. The Division Chief Financial Officer also ensures that the division adheres to corporate financial policies and regulatory requirements. Through proactive financial management and strategic collaboration, Andrew Vereecke supports the division's contribution to the company's mission, ensuring that the organization continues to provide specialized treatment for individuals facing behavioral health challenges across its diverse network.

    Erin McCarthy - CTC Chief Operating Officer

    Erin McCarthy, the CTC Chief Operating Officer at Acadia Healthcare, manages the operational performance of the Comprehensive Treatment Center network. Overseeing the daily operations of facilities focused on substance use disorder treatment, the CTC Chief Operating Officer ensures that clinical protocols and patient care standards are consistently met. This role involves streamlining operational processes to improve patient access and treatment outcomes. By collaborating with clinical and administrative teams, McCarthy drives the efficiency of the CTC network. The CTC Chief Operating Officer also monitors regulatory compliance and facility safety to maintain the highest standards of care. Through strategic operational planning and execution, Erin McCarthy supports the expansion of the company's substance use disorder treatment services, ensuring that the organization effectively meets the needs of individuals seeking recovery and long-term behavioral health support.

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    Frequently Asked Questions Regarding Acadia Healthcare Top Executives and Leadership Team

    Who leads Acadia Healthcare?
    Acadia Healthcare is led by Debbie Osteen (Chief Executive Officer), along with executives such as Kelly George (Chief Executive Officer, At Tennessee Behavioral Health (East)) and Christopher Mann (Chief Financial Officer).
    Who is part of Acadia Healthcare’s executive team?
    The executive team of Acadia Healthcare includes leaders such as Debbie Osteen (Chief Executive Officer), Kelly George (Chief Executive Officer, At Tennessee Behavioral Health (East)), Christopher Mann (Chief Financial Officer) and other senior executives.
    How many executives does Acadia Healthcare have?
    Acadia Healthcare has 10 executives leading key business areas.
    What roles are included in Acadia Healthcare’s leadership team?
    The leadership team of Acadia Healthcare includes roles such as Chief Executive Officer, Chief Executive Officer, At Tennessee Behavioral Health (East), Chief Financial Officer, Group Chief Financial Officer, Operations, Regional Chief Financial Officer.