NEW YORK — Kevin Davidson has left RXMosaic after seven years to oversee Zeno Group's New York and Washington health practice.

As an executive VP, Davidson will be responsible for managing existing client relations, as well as pursuing new growth opportunities. He replaces Robyn Jackson, who left earlier this year to become Citizen Relations' head of US health & wellness.

Before joining Zeno, Davidson was RXMosaic’s business director and group senior VP/client director, as which he led regional and global PR for pharmaceutical and biotech clients.

His exit from the Marina Maher Communications healthcare group comes on the heels of the departures of two other senior leaders — Michele Schimmel and Lisa Fern-Talbot.

Jennifer O’Neill, who was Lippe Taylor’s healthcare practice leader, has since been hired to oversee MMC’s two healthcare groups, MMC Health & Well-Being and RXMosaic, as managing director.