Dr. Sullivan currently works in private practice as a Dermatologist and is involved in clinical research.

During his training he received a number of awards including the Presidents Medal for Pharmacology and Therapeutics, the Bernie Amos Travelling Fellowship and Florence Bequest, along with intern and staff excellence awards Westmead Hospital. 

He has authored and co-authored a number of textbook chapters and had published a number of peer reviewed articles in areas including drug safety and psoriasis.   Dr Sullivan routinely presents at national and international medical congresses.

In addition to his training in Australia, Dr. Sullivan has spent time at the University of Toronto, Canada, pursuing clinical and research interests where he was fellow and chief resident with their clinical pharmacology and drug safety program.