Dr. Westbury is a Ventura County native. He was born in Port Hueneme, grew up in Camarillo and is a graduate of Camarillo High School. He attended Arkansas Tech University, where he received his bachelors degree in biology. He then attended the University of Missouri-Kansas City School of Dentistry where hereceivedhis doctorate of dental surgery degree.

Dr. Westbury has been involved in dentistry since he was 19 years old. During his first year in college, he visited the local oral surgeon's officeto have his wisdom teeth removed. Upon learning that he was going to pursue a career in dentistry, the surgeon offered him a job on the spot. For four years during college, he was an oral surgery assistant.

After graduation from dental school, Dr. Westbury practiced in South San Francisco for 12 years. During this time he also taught at the University of Pacific School of Dentistry as a clinical professor.