Dr. Natalie Kos obtained her Bachelor of Science degree in Chemistry from the University of Western Ontario and then obtained her Doctor of Dental Surgery degree at the University of Detroit. She successfully completed a one-year hospital residency in general practice at The University of Toronto (Toronto General Hospital). Dr. Kos then stayed on to become Program Director for the Dental Residency Program at the Toronto General Hospital for 10 years. She has taught undergraduate dental students at the University of Toronto as a faculty instrutor in the Department of Oral Medicine.

She has also studied Sleep Disordered Breathing, Dental Sleep Medicine, and has obtained Diplomate status with the American Academy of Dental Sleep Medicine. Dr. Kos works in conjunction with The Etobicoke-Brampton Sleep Clinic and The Malvern Sleep Clinic to treat Obstructive Sleep Apnea and snoring with oral appliances.

Dr. Kos is a member in good standing of The Royal College of Dental Surgeons of Ontario, The Ontario Dental Association, The Canadian Dental Association, The American Academy of Dental Sleep Medicine and The American Academy of Sleep Medicine. She was born and raised in Etobicoke and is an active part of the community. She can be often seen playing volleyball on the front lawn with her husband and two children, or walking her dogs.