HMG Executive and Leadership Team

Shawna Armstrong, the Chief Financial Officer at HMG, manages the fiscal health and long-term economic strategy of the medical group. Overseeing capital investments and revenue cycle management, the Chief Financial Officer ensures the financial sustainability of diverse healthcare service lines. This leadership role involves analyzing market trends to guide expansion efforts across the regional footprint. By implementing robust financial controls, Shawna Armstrong directly impacts the ability of the organization to invest in advanced medical technology and facility upgrades. Armstrong coordinates with the board to align budgetary priorities with the mission of providing accessible family and specialty care. Through rigorous auditing and financial planning, the Chief Financial Officer secures the resources necessary for sustained growth. Armstrong monitors economic performance indicators to mitigate risks, ensuring that the medical group remains a stable and reliable provider of essential healthcare services.

Samantha Sizemore, the Chief Operating Officer at HMG, directs all internal clinical workflows and administrative efficiency. Overseeing the daily operations of the medical group, the Chief Operating Officer ensures that family, pediatric, and geriatric healthcare services meet rigorous quality standards. This leadership role involves optimizing resource allocation across the Tennessee network to support patient throughput and staff productivity. By streamlining complex medical processes, Samantha Sizemore directly impacts the operational scalability of the organization. Sizemore manages the integration of specialty healthcare services into existing clinic frameworks, ensuring consistent delivery of care. Through meticulous oversight of facility management and personnel coordination, the Chief Operating Officer maintains the high standards expected of a premier medical group. Sizemore drives continuous improvement initiatives that enhance the overall patient experience while maintaining fiscal responsibility within the operational budget.

Darren Ramsey, the Chief Technology Officer & Chief Information Security Officer at HMG, architects the digital infrastructure and cybersecurity framework for the entire medical group. Overseeing the protection of sensitive patient data, the Chief Technology Officer & Chief Information Security Officer ensures compliance with federal health privacy regulations. This leadership role involves deploying advanced electronic health record systems to improve clinical documentation and patient outcomes. By hardening network defenses against emerging digital threats, Darren Ramsey directly impacts the integrity of the healthcare delivery system. Ramsey manages the integration of telehealth platforms to expand access to specialty services across the regional market. Through the implementation of scalable cloud solutions, the Chief Technology Officer & Chief Information Security Officer supports the technological needs of pediatric and geriatric clinics. Ramsey drives innovation in data analytics to provide actionable insights for clinical decision-making.

Samuel Breeding, the Chief Medical Officer & Medical Director at HMG, governs clinical standards and physician performance across all specialty departments. Overseeing the quality of care provided in family, pediatric, and geriatric settings, the Chief Medical Officer & Medical Director ensures alignment with evidence-based medical practices. This leadership role involves mentoring medical staff and establishing protocols that enhance patient safety and clinical outcomes. By fostering a culture of excellence, Samuel Breeding directly impacts the reputation of the medical group as a leader in regional healthcare. Breeding collaborates with other executives to integrate new medical advancements into the standard of care. Through the continuous evaluation of clinical performance metrics, the Chief Medical Officer & Medical Director identifies opportunities for service improvement. Breeding maintains rigorous oversight of medical staff credentials, ensuring that the organization delivers high-quality, compassionate care to every patient.