Alex Gumbs: Servant Leadership, Culture Change, and the Power of Inputs

Quantum Leadership

In this episode of the Quantum Leadership Podcast, Dr. Stephen Sideroff welcomes Alex Gumbs, seasoned healthcare executive and transformational leader, for a powerful conversation about turning around businesses, building resilient teams, and leading with heart.
From his roots as the son of Guyanese immigrants to spearheading a historic turnaround at Cardinal Health, Alex shares how culture change, servant leadership, and focusing on inputs over outputs became the foundation of his success. He opens up about the mentors and sponsors who shaped his path, the “four disciplines of execution” that helped his teams thrive, and why genuine empathy and psychological safety are essential for high performance.
His story blends hard-won corporate results with deep inner work and quantum thinking, showing leaders how to empower teams, reduce stress without sacrificing excellence, and create a ripple effect of positive change at work and at home.
Topics covered:

• Crossing the chasm from individual contributor to true leader
• Why sponsors matter more than mentors in opening doors
• The “Four Disciplines of Execution” and how to focus on inputs not just outputs
• Servant leadership and inverting the pyramid to empower teams
• Psychological safety as the foundation of creativity and resilience
• Debunking the myth that high performance requires high stress

Learn more about Alex Gumbs here: https://www.linkedin.com/in/alexander-gumbs-426b2017/
https://drstephensideroff.com/quantum-leadership-podcast/
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