Dr. Gary W.D. Lee

Your dentist in Diamond Bar, California, Dr. Gary W.D. Lee, completed undergraduate work at the University of Southern California in 1978 before moving on to study dentistry at the Georgetown University School of Dentistry.

Dr. Gary W.D. Lee began practicing dentistry in Diamond Bar, CA, in 1988. Dr. Lee works diligently to stay abreast of the latest advances in dental care and participates in regular continuing education seminars and advanced training courses.  It is because of Dr. Lee’s dedication to improvement and growth in a variety of dental technologies, treatments, and procedures that our Diamond Bar area dental patients receive the most modern, efficient, and effective general and cosmetic dental care available.

Dr. Gary W.D. Lee is a proud member of the following professional organizations:

  • American Dental Association
  • California Dental Association
  • Tri-County Dental Society
  • ACI Study Club
  • Omicron Kappa Upsilon National Dental Honor Society
  • Past member of The Odontic Seminar, University of Southern California

Dr. Lee is the father of twin sons, Kevyn and Errick. Kevyn graduated Northern Arizona University with a major in psychology and a minor in sports medicine. He is working towards becoming a paramedic and is presently an EMT. Errick is attending Pierce College and has a long-term goal to become a veterinarian. He is looking to work with horses; he is a horse whisperer. Outside of the office, Dr. Lee enjoys road cycling, fishing, bowling, and photography. His goal as your dentist is to provide patients with a healthy mouth and beautiful smile for life.

Meet Our Team

Our expert team of dental specialists is known for their ability to ease patients with their compassionate and knowledgeable care. Dr. Gary W.D. Lee chooses individuals who are committed and stand by our standard of excellence in personalized care. If you have question about our team or dental care in Diamond Bar, California, please contact us at 909-861-2331 to address your concerns.

Office Manager
We have had the pleasure of having this amazing woman on our team since April 2017. She greets patients with her fun, loving self and when our patients leave they’re always happy and feel like they had the best experience ever with our dental office. She thinks the office team is wonderful as they are more than just a team, they are a family. She has a wonderful husband and a great son and together, they love to travel and try different foods. As a family, they love seafood, and Denise loves going to the ocean to relax and hear the waves with the ocean breeze.


Rosalyn aka Roz
Registered Dental Assistant
I Came into the field when I was 16 started as a interpreter for Spanish patients in steamboat springs Colorado. I grew to love all parts of dentistry and enjoy meeting patients and building relationships with them. Outside of work I enjoy spending time with my son who is also my best friend. We are big cowboys and dodgers fans. We enjoy going to the beach and take part in volunteer work together. I also enjoy going to the gym as much as I can.