NEW YORK, July 23, 2020 — Greater Than One (GTO), a New York-based integrated full-service health and wellness marketing agency, announced that Hoon Chang has joined as Chief Client Officer, a newly created position.

Chang joins after having held the title of Director of Client Services at Harrison & Star where he rose through the ranks beginning as a Group Account Supervisor. Prior to joining Greater Than One, Chang oversaw a wide range of accounts and clients, from small start-ups to large multi-national brands.

“Hoon’s reputation to optimize best practices and agency efficiencies and to encourage collaboration has followed him throughout his career,” said Kieran Walsh, President of Greater Than One. “He’s very much a leader and having him join our agency, with its focus on developing imaginative, award-winning creative, allows us to further unleash our potential to build and redefine brands.”

According to Chang, it’s the opportunity to integrate technology with GTO’s focus on award-winning, imaginative creative that was most intriguing. “As GTO continues to grow and expand, so does the need for more functions and specialties within the agency. The need for communication and collaboration not only increases but becomes more complex. By creating this Chief Client Officer role at GTO, the goal is to ensure that we’re now bringing the best service and deliverables to our clients, their customers, and most importantly their patients.”

Hoon Chang

“We’re very much aligned in our thinking”, said Walsh. “Blending creative strategy with technology and imagination begins with a leader who can pull all of our resources together and provide our clients with cutting-edge solutions.”


Founded in 2000, Greater Than One Group is a privately held full-service global agency network that provides creative, digital, media, enterprise, analytics, social media and business consulting solutions to leading health and wellness clients around the world, with offices in in New York, San Francisco, Madrid, Barcelona, Milan and London. Made with Imagination™ and driven to improve healthcare for patients, families and all members of the medical community, GTO Group applies converged proprietary data-driven methodologies to question what is truly possible and deliver real-world results. For additional information, contact us at [email protected] or visit us at