Patient Reviews

We strive to provide the best possible care and service for our patients. Please leave a review to let us know how we are doing and to share your experience with others.

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Read what other patients have said about us:

April E, Parker

Dr. Sierk and his entire staff are so great! My daughter loves to go and they made my 2 yr old son feel comfortable and safe for his first cleaning. Coukdn’t ask for a better pediatric dentistry!


Barbara H, Lone Tree

We love Dr. Sierk and the entire staff! Our son who is now 13 has been going to Dr. Sierk since he was 4! The best part is that our son is inspired to take great care of his own teeth thanks to the amazing care and encouragement to do so by Dr. Sierk and the hygienists. Thank you!!


Denise S., Centennial

Always a great experience! The staff is amazing....so friendly and great with kids! Thank you!


Laine Jarvis, Highlands Ranch

The staff and Dentist were all delightful! This was my son's first visit ever to a dentist and they made it a calm and easy experience. Everyone is really great with the kids and showing them exactly what is going to happen so they aren't surprised. I appreciated all the time they took to ease my son's nerves and answer any questions we had. Would highly recommend them!


Anonymous , Aurora

My son loves coming to the dentist. Everyone in the office is warm and friendly. It is a perfect place for a kid's first dentist experience, and then, why go anywhere else? They also do a great job explaining what they see and providing ethical advice.


Nicole Jaime, Highlands Ranch

Dr. Sierk is always welcoming and my son is comfortable every time he is there. Thank you!!


Carissa B. , Centennial

My son is currently 14 and has been going to Sierk Pediatric Dentistry since he was three years old. Dr. Jon and his staff have been excellent with every age along the way! I highly recommend this practice! The environment, the level of patience and professionalism are all top notch.


Kristie S, Highlands Ranch

My kids have been going to Sierk dentistry since they opened. Nothing but good experiences here. Highly recommend this practice!


Jill C., Lone Tree

Always great to see Dr. Jon & his staff! They are the best!


Dawnette Dobrick, Elbert

Our boys have seen Dr Sierk since we move to Colorado 9 years ago. They are now 13 & 16 and still live having him as their dentist!! HE IS AMAZING!!! We drive almost an hour to see him because he’s THE BEST!!!


Kristen Menzel, Highlands Ranch

Dr. Jon and team are the best! They provide exceptional care and always make the kids feel comfortable.


ALEXANDRA SLATTERY, LONE TREE

Dr. Jon is amazing with the kids. His staff is very friendly and makes our children like, (yes, I said like), going to the dentist. I wish they had a "Dr. Jon" when I was growing up... Highly recommend him.


Wendy F, Highlands Ranch

Always a great experience!


Yelena Lisser, Highlands Ranch

Wonderful staff! Very knowledgeable, patient and compassionate. Took their time explaining all the procedures, and were very sweet with both my kiddos. Great experience!


Kristen D., Highlands Ranch

We have had nothing but great experiences here. Dr. Sierk has been our kids' dentist since he opened his practice and we wouldn't even consider going anywhere else. We have had our share of dental emergencies through the years, and Dr. Sierk and his staff have always gotten us in quickly for treatment and administered the best possible care. Our kids have never been afraid of the dentist or dental procedures thanks to Dr. Sierk's amazing bedside manner and the compassion of his staff.


Derek S., Commerce City

You won't find a staff or Pediatric Dentist who has genuine sincerity behind their work with kids. They truly care about families and build positive relationships with their clients. Overall, we are extremely happy with the level of professionalism, care, concern & knowledge of the staff at Sierk Pediatric Dentistry.


Tia T, Highlands Ranch

Dr. Sierk and his team are great. My kids love to go every time!


Bryana M, Lone Tree

I am so thankful to have found Dr. Sierk and his staff. All three of my kiddos were seen at the same time and I was amazed at the patience, ease, kindness and personal care they showed each of my children on an individual basis. I walked away from our appointment encouraged and elated over how well it all went. Thank you Sierk Dentisty for taking such good care of us!


Karissa K. , Parker

We love Dr. Jon & his team! He is so patient with my 3 children when they were nervous about having dental work done. He explained everything he was going to do before he did it. They felt very at ease and were given pelntly of time to ask their questions. The whole team is wonderful & we’d whole heartedly recommend them!


Kara, Littleton

All around an awesome experience!!


Sarah R. , Highlands Ranch

We have been going to Dr. Sierk for close to 6 years. We couldn’t be happier with this practice. My 8 yr old daughter had to have 2 baby teeth pulled today and they made it so easy. She and I were both very nervous but we were taken back to get started immediately (no waiting=less time to get scared!) and she felt no pain. They are always prompt and kind whenever we go in for general cleanings. My kids love going to the dentist! Thank you all for making this a wonderful experience for them!


Kristin M , Lone tree

Great staff. Wonderful experience for my daughter! Thank you so much for taking the time to explain things to her.


Phil G, Castle Rock

Always a great experience



Office Location

  • Highlands Ranch
  • 6660 Timberline Rd #240
  • Highlands Ranch, CO
  • 80130
  • Map & Directions
  • Call: (303) 865-4066
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