Dr Fauziah obtained her MD from Universiti Kebangsaan Malaysia in 1990. Upon completing her housemanship at Hospital Sultanah Aminah Johor Bahru (HSAJB), she was posted to Mersing District Hospital for a year before returning back to HSAJB for her paediatric training. She obtained her Masters of Medicine (Paeds) from Universiti Kebangsaan Malaysia in June 1998 as a paediatrician.
When the Paediatric Department from Queen Elizabeth Hospital was moved in 2005 to Hospital Likas (later named as Sabah Women & Children Hospital), she was among the few consultant paediatricians practising there until 2015.