Heather DeCoster, MHA, is the Senior Consultant and Managing Director at Lost Horizon. She is a strategist and operator who thrives at the intersection of vision and execution, bringing clarity, discipline, and focus to complex organizational challenges. Over the past 18+ years, she has helped healthcare delivery, insurance, and healthtech organizations turn strategy into measurable outcomes, from driving value-based care savings and financial performance to aligning executive, product, and business teams around shared priorities.

As a seasoned Chief of Staff and operator, Heather partners directly with founders, executives, and boards to establish operating structures, decision-making cadences, and performance frameworks that enable scale. She’s known for creating the connective tissue between strategy and execution, ensuring that leadership intent translates into coordinated action and visible results.

Heather earned her Master’s in Health Administration, where she received Graduate Dean’s Awards for Exceptional Academic Achievement and Excellence in Service to the Community. Named Graduate Student of the Year by the American College of Healthcare Executives, she went on to complete an Administrative Fellowship at Corewell Health under the mentorship of the CEO. She has since built a distinguished career leading initiatives across major health systems, payors, startups, and private equity funds.

Energized by solving ambiguous problems and connecting people and data into clear action, Heather blends the analytical rigor of a management consultant with the pragmatism of an operator. Known for her calm decisiveness and cross-functional influence, she helps organizations turn complexity into momentum, building the rhythms, systems, and accountability structures that enable leaders and teams to perform at their best.