Shak was born and brought up in the beautiful valley of Kashmir. In 1988, he commenced his studies in dentistry and qualified in 1992 as a dentist from the University of Mysore, India and moved to the United Kingdom in 1994. He attained a Master's degree in Restorative Dentistry from the Queen's University of Belfast in 1995. He completed his Fellowship in Dental Surgery from the Royal College of Surgeons of Edinburgh in 1998. He moved to Dubai for a short time in 1999 and worked as Restorative and General Dentist for Emirates Airlines. In 2000 he returned to the UK and commenced his Specialist Registrar training in Restorative Dentistry at the Newcastle Dental Hospital. He attained his exit Fellowship in Restorative Dentistry 2004 and completed his specialist training in 2005. During this period he also completed a 4-year part time research degree and successfully submitted his thesis for attainment of Doctor of Dental Surgery (DDS) from Newcastle University. He was appointed as a Consultant at The Royal London Dental Hospital in 2005 and was subsequently appointed as Honorary Senior Clinical Lecturer at Queen Mary University, Barts and The London School of Medicine and Dentistry. Shak is a specialist in Restorative Dentistry, Periodontics, Prosthodontics and Endodontics. His areas of interest includes: aesthetic implant dentistry, and management of complex restorative cases including functional and aesthetic rehabilitation of patients with hypodontia. He is the Lead for postgraduate implant training at The Royal London Dental Hospital. He is an executive member of the Specialty Advisory Board for Diploma in Implant Dentistry at The Royal College of Surgeons of Edinburgh. He is a Fellow of the International Team for Implantology (ITI), and a Diplomate of British Society of Oral Implantology (BSOI). He also runs a multi-specialist referral practice in the West End of London.