Virgo Health director Siân Boisseau will take up her role and will overseee the team in conjunction with newly promoted associate director Hannah O'Neill.
Rodwell is returning home to Australia at the end of the month after working in the UK PR industry for almost 10 years.
Boisseau has been a director at Virgo for two years. She recently headed up the PR campaign for GlaxoSmithKline's controversial diet drug Alli.
This announcement comes shortly after the appointment of Paul Archer as business unit director for Health Education (PRWeek, 14 May 2009).