Peter completed his postgraduate study at the University of Groningen, the Netherlands and West China School of Stomatology, Sichuan University. He worked for four years in the Netherlands before relocating to Dunedin in 2011. He is also an Associate Professor and Clinical Supervisor for postgraduate and undergraduate students at the University of Otago.

Peter is a member of several international professional organizations, including the New Zealand Association of Orthodontists, the New Zealand Dental Association, the American Association of Orthodontists, the European Orthodontic Society, and the World Federation of Orthodontists. 

Peter has published extensively in peer-reviewed international journals and serves as a reviewer for various international journals. He has been the recipient of several national and international awards, such as the European Orthodontic Society Awards.

Peter has been practising orthodontics for more than fifteen years and is an authorized specialist by Invisalign and Incognito. He provides traditional braces, clear aesthetic braces, Invisalign clear aligners and customized Incognito hidden braces for children as well as adults.