Guillaume Castel

Chief Executive Officer

Guillaume Castel was named CEO of PerfectServe in July 2019. Castel is responsible for the evolving vision of the company as well as day-to-day leadership and operations. He brings nearly 20 years of experience in strategy, business development, finance and operations across the technology and healthcare industries. With the recent acquisitions of Telmediq, Lightning Bolt and CareWire, Castel joins the company at a pivotal juncture. He is leading the charge to develop and grow the entire PerfectServe portfolio.

Castel previously served as Vice President of Business Development at Inova Health System, a large nonprofit provider in Northern Virginia with five main hospitals, over 18,000 employees and more than $3 billion in yearly revenue. Inova is one of the nation’s most innovative health systems, having received the Washington, D.C. region’s only five-star rating from the Centers for Medicare and Medicaid Services. In his role, Castel drove the agenda for growth at the highest levels of the organization, including architecting, owning and negotiating two of the largest inorganic expansions in Inova’s recent history.

Before Inova, Castel was with the Advisory Board Company, a publicly-traded best practices firm specializing in healthcare with over 3,000 employees and yearly revenue of more than $800 million. He was part of the team that arranged the sale of the Advisory Board’s Performance Technology portfolio to Optum, and subsequently co-led the first two quarters of integration work. In his appointment as COO of Performance Technology, Castel had responsibility for operations and strategy for the technology business, where he also oversaw analytics and workflow product launches. Castel ran the Advisory Board’s partnership program, driving innovation through relationships with large tech firms, consulting companies and smaller niche players.

Prior to Advisory Board, Castel spent six years at Cisco Systems, ultimately serving as Director of Business Development. His various managerial and executive roles at Cisco required managing technology at scale, driving innovation, acquiring new software capabilities, designing a partner-led commercial engine and leading multibillion-dollar joint venture deals. Before that, Castel also spent seven years with IBM in a number of roles ranging from Finance and Operations in IBM Global Services to Corporate Development at IBM’s headquarters.

Castel serves on the boards of  the Heifer Foundation and

Originally from France, Castel received an MBA in Finance from the Institut d’Administration des Entreprises.

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