NEW YORK — Goodfuse CEO Olga Fleming and managing director Courtney Walker are leaving the firm to assume new healthcare leadership roles at Marina Maher Communications.

Fleming has been named president of MMC’s healthcare and corporate business, a newly created role that includes overseeing healthcare across MMC and healthcare agency RXMosaic, as well as the firm’s corporate practice.

Fleming will also spearhead the agency’s healthcare and corporate, marketing, and acquisitions strategy. She will report to global president Rema Vasan on healthcare and corporate business, and to CEO and founder Marina Maher on acquisitions.

Walker, meantime, will be leading RXM and drive new healthcare business for both MMC and RXM as managing director, also a newly created role. Walker will also lead the comprehensive healthcare communications offering at RXM and will work on new business development for both RXM and MMC. She will report to Fleming.

Both Fleming and Walker have been with Goodfuse since 2013, when the WPP-owned agency was launched as Y&R PR.

Fleming launched Goodfuse, which is a BCW company, with a focus on healthcare, though the agency now also has capabilities in the consumer and technology sectors, and corporate and public affairs realm. She had been a Cohn & Wolfe executive VP before that. Walker brings more than two decades of experience to MMC, having held senior leadership roles at WCG, Edelman and Ruder Finn.

Hiring Fleming and Walker is the latest in a series of senior leadership changes at MMC.  In early August, Vasan was named the firm’s first global president, just months after she became president in March.