Jonathan Sierk Children's Dentistry

Meet the Teams at Our Locations

Building a foundation of trust by treating our patients as special individuals is vital to our success.  We understand how uneasy some patients may feel about their dental visits, and how we can make a difference in providing a relaxing and positive experience.  Our entire team is dedicated to providing you and your child with excellent, personalized care and service to make your visits as comfortable and pleasant as possible.

We thank you for allowing us to take care of your child's dental needs and look forward to serving you.

Dr. Jonathan Sierk, D.D.S.

Dr. Jon has been serving the children and families of Colorado since completing his pediatric specialty training in 2003 and is proud to be a diplomat of the American Board of Pediatric Dentistry.

"I am humbled by the trust the our patient families have in the care that my team provides.  When a child is in our care they are treated as if they are one of our own.”

After growing up in Bettendorf, Iowa, Dr. Jon graduated from Northwestern University in 1996 where he divided his time between studies and the varsity soccer team. He then returned home to attend dental school and then on to complete an extensive three-year residency at the University of Iowa specializing only in the dental care of children.

Dentistry is a family affair for Dr. Jon.  His father and two brothers also proudly graduated from the University of Iowa’s College of Dentistry. Dr. Jon is on staff at the Children’s Hospital of Colorado and served as an adjunct professor in the training program there from 2005–2011. He is also certified in Advanced Cardiac Life Support (ACLS) as well as Pediatric Advanced Life Support (PALS).

Dr. Jon volunteers time and resources to support Colorado families through community outreach programs.  Dr. Jon has participated in medical mission work in many locations within the Dominican Republic, extracting teeth for underserved families in remote areas.  

In his free time, he loves to travel and hike with his fiancée Stacey, golf, read, keep up with his nieces and nephew, and cheer on the St. Louis Cardinals. Telluride, Colorado, Bandon Dunes, and London are a few of his favorite places. 

Dr. Jon truly loves working with his child patients and is proud to have been named to "Denver's Top Dentists" by 5280 magazine yearly since 2011.

Location for Dr. Jonathan Sierk, D.D.S.

  • Sierk Children's Dentistry - Highlands Ranch


Dental Assistant and Patient Coordinator

Ashley excels in her many roles at Sierk Children’s Dentistry.  Her responsibilities include dental assisting, patient coordination as well as community outreach for our practice.  She graduated from the Dental Assisting program at Pickens Technical College in 2007.  Ashley has proudly spent her entire dental career in pediatrics and has been serving the families of Sierk Children’s Dentistry since November of 2014. 

Ashley is a Colorado native and loves that her two children are as well.  In her free time, Ashley enjoys being outdoors exploring our great state, going to the movies and traveling with her husband and kids.


Location for Ashley

  • Sierk Children's Dentistry - Highlands Ranch


Dental Assistant

Myria is one of our shining stars at Sierk Children’s Dentistry!  One of her greatest gifts is to help make our patients feel warm and happy in the dental chair. Coaching patients to overcome anxieties while keeping a positive attitude is what she does best!  Myria earned her degree at the Colorado Dental Assisting School and was drawn to working with kids.

She spends her free time curled up with a good book or hiking with her husband Matt and dog Jasmine.  Myria is also an amazing photographer, focusing on portraits and the beautiful Colorado outdoors.  We proudly display her work in our office and on our website. 

Location for Myria

  • Sierk Children's Dentistry - Highlands Ranch


Practice Administrator

A Colorado native, Kim has recently returned from Austin, Texas.   She brings over 20 years of dental experience to our practice.  Her insurance experience comes from years as a dental assistant, consultant and dental practice manager.  She is our “go-to” person when patients have insurance questions or need assistance choosing their yearly dental plan.  

Kim earned an Associate’s Degree in Dental Assisting as well as her certificate in Human Resources.  These degrees and experience allow her to utilize her Medical and Dental knowledge to benefit our patients and team.  

As Kim re-acclimates to Colorado and our beautiful weather, you will often see her at her beloved Broncos games, fishing, hiking and remodeling her newly purchased home.  Her 5 boys are her greatest joy in life.  

Location for Kim

  • Sierk Children's Dentistry - Highlands Ranch


Dental Assistant

Jaime joins our team as our newest team member.  She grew up in Colorado Springs and loves everything the Denver area offers.  She loves people and says: "I’m very extroverted". 

Jaime became a dental assistant because she was once terrified of the dentist.  A dental assistant made her whole experience better by explaining every detail,  while being very patient.  Jaime loves being a dental assistant and wants to create the same positive experience for our patients.  She loves to treat children that may need that extra care and a warm friendly smile.

Among Jaime's loves fashion, traveling, and photography. She has already traveled to 7 different countries and loves that her photographs capture moments for people they can cherish forever.  Among her favorite foods are Pringle’s and peanut M&M's

Jaime spends her private time with her boyfriend Tyler and her sisters Kaite and Cassie.

Location for Jaime

  • Sierk Children's Dentistry - Highlands Ranch
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