Your Destination for
Healthy Little Smiles

As a Stapleton dentist for kids, we have all of your child’s smile needs covered at our bright, family-friendly pediatric dental practice. We take a preventative, high-tech approach to make check-ups and treatments a breeze for parents and kiddos alike. At Kids Mile High at Stapleton, we serve kids and teens, including those with special needs, and we make maintaining healthy smiles super fun (yes, really!).

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What Makes Us Unique?

Cutting-Edge Technology

At Kids Mile High at Stapleton, we embrace the latest technology, ranging from painless, needle-free WaterLase laser dentistry to the revolutionary Isolite system for stress-free, comfortable diagnostics and treatments.

Convenient Care

We know you’re busy! With early appointments, digital systems and three awesome locations in Stapleton, Englewood and Thornton, we make visiting the pediatric dentist works for your schedule and needs.


As a dentist for kids, our offices designed with little ones in mind and there’s never a dull moment at Kids Mile High. Kids can play games, practice on our in-office putting green or hang out with the residents of our enormous fish tank.


Dr. Paddy and Dr. Roger were both named top dentists in Denver and Dr. Owens was named a top orthodontist by 5280 Magazine after being nominated by their peers!

Focus on Prevention

By focusing on prevention, we can keep mouths happy and healthy and often avoid the need for treatment. If an issue does pop up, we always treat conservatively.


We pride ourselves on open, honest communication. We take the time to explain everything in detail and we’re always available if you have questions or concerns.

Meet The Doctors

Dr. A. Patrick Smithwick, fondly known as Dr. Paddy, and Dr. Roger Castro, known as Dr. Roger, are board-certified pediatric dentists. (Fun fact: They were actually friends in dental school!) Dr. Justin Owens, a certified specialist in orthodontics, rounds out the team. The trio offer a full range of pediatric dental services and orthodontic treatment to kids and teens. They are all about providing exceptional care and making the experience positive and fun to encourage a lifetime of awesome oral health.

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Consultation Today!

Stapleton Office

(303) 399-5437
2373 Central Park Blvd.
Suite 305, Denver, CO 80238

Englewood Office

(303) 779-5306
125 Inverness Dr. East Ste 300
Englewood, Colorado 80112

Thornton Office

(720) 629-9969
7375 E. 128th Ave.,
Thornton, CO 80602

What Our Patients Are Saying

Dr. Paddy and the entire office staff are helpful and communicative. Every question I've had has been thoroughly and thoughtfully answered. My 2 year old has had major oral surgery and is still happy to go to the office; it really is kid friendly.


Dr. Paddy and his staff do a fantastic job of making my kids feel comfortable and at ease when we visit his office. My daughter is always asking me "when can we go see Dr. Paddy" because she has such a good time going to his office. Having my kids dentist be board certified makes me feel confident that I'm getting the best care possible for my kids.


Dr. Paddy is incredibly kind and I would highly recommend him to anyone. Our daughter had such a lovely experience that she asks to visit the doctor whenever we are near his office. Truly top notch- we couldn't be happier with the care given to our daughter.


Choosing "Kids Mile High Pediatric Dentistry" for the dental treatment of my seven years old son, is the best decision I ever made. Dr. Paddy is the kindest and most professional pediatric dentist I've seen, and I have taken my son to many dentists before, including Children's hospital.


Dr. Paddy and the Kids Mile High Staff were excellent! Dr. Paddy was so professional in relating to my kids and to me as a parent. We recently relocated to the Denver area, and my 5 and 3 year old were seen for their first check-ups. It was by far the best pediatric dental experience we've had.


Such a great place to take your child for a check up. The staff is friendly and really take care of you, and are so great with kids! It was my daughter's first dentist visit and she loved it!!! I'm happy we found the this place.


Dr. Paddy and all the staff are about as accommodating, polite and helpful as possible. Exceptional care and consideration of children and an environment which keeps young kids feeling like the dentist is fun. Great bedside manner during procedures and excellent and transparent diagnoses and procedures.