Dr Michael Armstrong is a G.P. on the Northern Beaches of Sydney and has been in full time practice for over 40 years.

For many years he was a Clinical Lecturer in Community Medicine at Sydney University and in this role he mentored many undergraduates.
He has assisted a number of community and medical organisations over a long period of time and for over 20 years he has been Chairman of the Medical Advisory Committee of the Peninsula Private Sleep Laboratory.
Currently he has an involvement with several committees associated with MIA.