Clarissa Willett is a distinguished financial executive whose career spans more than three decades of driving transformation, elevating operational performance, and shaping long-range strategic direction for some of the most influential organizations in healthcare and related industries. Her journey reflects a rare blend of financial acumen, executive leadership, and change-management expertise, all grounded in a deep commitment to improving organizational health and empowering teams. With over 25 years specifically within diagnostics and healthcare services, she has developed a reputation as a stabilizing force amid complexity and a visionary architect of systems that support sustainable growth.
Throughout her career, Clarissa has demonstrated a unique ability to bridge financial, operational, and strategic domains. Her leadership is characterized by a disciplined approach to resource utilization, an analytical mindset that uncovers opportunities for optimization, and an unwavering focus on accuracy, credibility, and transparency. These capabilities have consistently enabled executive teams, boards, and stakeholders to make informed decisions with confidence, even in rapidly evolving or highly regulated environments.
In her current role as Chief Financial Officer for Labcorp Diagnostics, Clarissa plays a pivotal part in guiding one of the nation’s largest healthcare diagnostics organizations through continuous change. She leads with a steady, strategic hand—harmonizing financial oversight with operational insights and ensuring that performance metrics align with the organization’s long-term vision. Her influence extends across finance, accounting, budgeting, forecasting, and enterprise-wide strategic initiatives, anchoring Labcorp’s ability to adapt, innovate, and excel.
Prior to her CFO appointment, Clarissa served as Labcorp’s Senior Vice President of Revenue Cycle Management, where she oversaw one of the most critical components of organizational performance. Her tenure in this role strengthened the financial foundation of the business and modernized key systems and processes. She also led investor relations for the enterprise for several years, providing external stakeholders with the clarity and insight necessary to understand Labcorp’s direction, performance, and competitive positioning.
Before joining Labcorp, Clarissa served as Senior Vice President and CFO of PAML, where she led finance, accounting, revenue cycle, supply chain, payer relations, and performance optimization across multiple entities and joint ventures. Her work in this role reflected her expertise in navigating complex business partnerships, standardizing processes across diverse operational footprints, and ensuring financial integrity at scale. Supporting multiple finance committees and boards during this period further sharpened her board-level perspective and strengthened her ability to serve as a strategic advisor.
Her earlier leadership roles at Quest Diagnostics and Meritain Health laid the foundation for her deep expertise in mergers and acquisitions, internal controls, revenue cycle, financial reporting, and business analytics. She was instrumental in leading Sarbanes-Oxley efforts, implementing cost-containment initiatives, and guiding the integration and standardization of numerous acquired businesses. Through these experiences, Clarissa became known as a meticulous operator with the capacity to drive long-term transformation while preserving organizational stability.
Across all stages of her career, Clarissa has leveraged her experience with more than fifty mergers and acquisitions—from due diligence to integration—to guide organizations through transitions with foresight and discipline. She understands the human and operational dimensions of integration, recognizing that success lies not only in numbers but also in harmonizing cultures, systems, and expectations. Her approach emphasizes learning from both successes and challenges, resulting in a well-rounded, pragmatic perspective valued deeply by executive peers and boards alike.
Clarissa’s career is also marked by a strong global orientation. She has supported international teams, with notable engagement in Mexico, and her fluency in Spanish enhances her ability to lead across cultures and geographies. Her people-first leadership style fosters collaboration and trust across multi-functional teams, reinforcing her belief that transformation requires not only strategy and systems, but also empowered people aligned around a shared mission.
With a Bachelor of Applied Science in Accounting from National University and executive education through Duke University’s CFO Program, Clarissa has continued to expand her leadership toolkit and elevate her impact. Her dedication to continuous learning and professional growth reflects her commitment to staying ahead of industry evolution and ensuring that the organizations she supports benefit from the most current, strategic perspectives.
Today, Clarissa serves as both an executive leader and trusted board advisor, bringing clarity to complexity and guiding organizations through periods of significant transformation. Whether modernizing financial systems, leading enterprise technology implementations, or shaping long-range strategy, she approaches every challenge with integrity, strategic insight, and a deep understanding of how to build resilient, future-ready organizations. She views board service as an opportunity to apply the breadth of her experience to help organizations evolve with confidence, discipline, and purpose.
Clarissa’s personal mission is rooted in the belief that great leadership requires both precision and heart—an unwavering commitment to the numbers paired with a genuine dedication to the people behind them. Her career stands as a testament to the power of strategic partnership, operational excellence, and leadership anchored in authenticity.
Character:
Clarissa is known for her integrity, steadiness, and commitment to doing what is right for both the organization and its people. She leads with humility while maintaining the confidence needed to guide large-scale transformation. Her decisions consistently reflect a strong moral foundation and respect for the responsibilities entrusted to her.
Knowledge:
With more than thirty years of professional experience, Clarissa brings unmatched expertise in healthcare finance, operations, and organizational transformation. Her understanding of mergers, integrations, modern technologies, and strategic planning equips her to navigate highly complex environments with clarity. She continually deepens her knowledge base, ensuring that her guidance remains both relevant and forward-thinking.
Strategic:
Clarissa excels at assessing organizational needs, identifying pathways for improvement, and aligning resources to achieve long-term objectives. She blends financial insight with operational understanding, resulting in strategies that are both visionary and actionable. Her ability to anticipate industry shifts and prepare organizations for the future makes her a powerful strategic partner.
Communication:
Communicating with clarity, empathy, and purpose, ensuring that complex concepts are accessible to stakeholders at all levels. She brings a steady presence to boardrooms, executive discussions, and cross-functional teams alike. Her communication style strengthens alignment, drives engagement, and builds trust across diverse audiences.
