ER Doctor Turned CEO Shares Uncertainty Lessons

John D'Angelo, who transitioned from emergency medicine to become president and CEO of Northwell Health in October, has shared four key lessons for handling uncertainty in leadership. D'Angelo, who previously led Northwell's COVID-19 response, likened his initial months as CEO to managing a high-pressure emergency room shift, citing the acquisition of Nuvance Health and an ongoing digital transformation as major concurrent challenges.

The acquisition of Nuvance Health created a combined entity comprising 28 hospitals and over 100,000 employees, with $23.1 billion in operating revenue reported for 2025. This expansion necessitated the replenishment of Northwell's leadership team due to numerous executive retirements. Simultaneously, the health system is undertaking a significant digital transformation, which includes the implementation of a new electronic health record platform and the integration of artificial intelligence (AI) technologies.

D'Angelo, who was drawn to emergency medicine due to its inherent uncertainty, explained that patients rarely present with a clear diagnosis. This background, he suggests, has equipped him to manage complex and unpredictable situations. He noted that the experience of juggling multiple critical priorities during a period of technological upheaval is a common challenge for CEOs today, but his specific ER experience offers a unique perspective.

His insights are particularly relevant as many leaders face similar complexities. D'Angelo's approach emphasizes the ability to make decisions and provide direction even when faced with incomplete information or rapidly evolving circumstances. The lessons derived from his ER experience are being applied to guide Northwell Health through its current phase of growth and technological advancement, aiming to foster resilience and effective management within the organization.