Meet Dr. Diedo

Creating a positive experience along with happy and healthy smiles


Meet Dr. Diedo

My name is Dr. Diederik Millenaar, and I am a Certified Specialist in Pediatric Dentistry. After nearly fifteen years of successful practice in Vancouver’s Fairview Slopes area, I have opened a new office in Coquitlam’s Austin Heights area in order to work closer to home.

I received my dental degree from the University of Western Ontario in 1996. After finishing a year long residency at BC Children’s Hospital, I completed my specialty training in New York in 1999. I am a Fellow of the Royal College of Dentists of Canada, and a member of both the Canadian and American Academies of Pediatric Dentistry. I served as President of the B.C. Society of Pediatric Dentists from 2010 to 2012. My areas of interest lie in behaviour management and cavity prevention.

I have enjoyed living in the tricities area for over 15 years with my wife, two children, and our two dogs. I enjoy playing old-timer hockey, swimming recreationally and hiking the many wonderful trails in our community.


At Kidsteeth we are focused on creating long-lasting relationships with our patients. Read what our patients’ parents have to say about Dr. Diedo and the staff at Kidsteeth.

Dr. Millenaar and his staff are amazing. My son has had a lot of dental work and we had a pretty rough run with a previous doctor not doing the work properly, but all of our fears and anxieties were quickly calmed by Dr. M and his staff. They are all very professional, and great with my son, who has had his share of dentist nightmares! And one of the things I enjoy most is that Dr. Millenaar is VERY passionate and enthusiastic about what he does.

Sonya M., Vancouver, BC

Dr. Diedo and his staff are amazing!! My daughter has been his patient since she was 3 years old (she’s now 13). He was so great that we drove to downtown Vancouver for all these years! He will always do what is best for the patient, never recommends any treatment thats unnecessary and really genuinely cares about every single patient. My daughter has had quite a lot of dental problems and he and his staff really go above and beyond to make sure you understand everything that is going on and they are friendly and I would never hesitate to recommend them to anyone! I’m ecstatic that he’s now in Coquitlam!

B. Valle, Coquitlam BC

Dr. Millenaar and his staff are amazing! We’ve been seeing him for over eight years and my three children love him! He is professional, personable and very friendly. I have and will continue to recommend him.

S. Rogg, Vancouver BC

Dr. Millenaar is warm, comforting, and highly-skilled as my daughter’s dentist. She finds him  funny and says that he “just makes things easier”. His staff are professional, attentive and caring in their interactions with both me and my daughter. I would highly recommend Dr. Millenaar and his office to anyone seeking a pediatric dentist.

S.N., Vancouver

We would like to send our appreciation to Dr. Millenaar, Joyce and all staff for their sincere treatment of my son. We felt sorry for our four year old son when he was found to have ten cavities. We originally met with another dentist for the treatment but their policy was to proceed with general anesthesia. We were so anxious to accept this treatment because we felt he was too little for general anesthesia. Then we found Dr. Millenaar. After a professional consultation, we agreed on the way he wanted to proceed for my son. After a couple of treatments, all cavities were treated perfectly. We are thankful for their support and instruction about how to protect the teeth in the right manner.

K.K., North Vancouver

Every parent knows the stress of looking for that perfect dentist for their little ones. It took us quite a while and we tried different ones, but found that Dr. Diedo, as he is called, is the best we’ve come across. Getting to his office is easy and the clinic is very inviting. Our son enjoys playing with the toys and other stuff while he waits for his turn and I believe that’s what makes him relaxed when his turn is called. The staff are all very friendly and helpful, and they know how to ease the child’s tension. Our son had two procedures done, both under sedation, and we are very satisfied with the work. We have two other sons and you can bet they’ll also be seeing Dr. Diedo. We highly recommend him for your children’s dental needs. For your kid’s teeth, Diedo’s it.

M.M., Vancouver