Superhero Smiles For Your Little Ones.

Welcome to Team Awesome

When you join Dr. Paddy’s team, Team Awesome, you’ll never look at going to the dentist the same again. We offer exceptional pediatric dental services in a relaxed, cheerful environment. Kids Mile High Dentistry makes maintaining good oral hygiene fun (yes, really!).

Our Office

There’s never a dull moment at Kids Mile High Dentistry. Our colorful, 6,000-square-foot office was designed with our patients’ comfort and enjoyment in mind. Get a high-five from Dr. Paddy while showing off your skills on the in-office putting green or check out the residents of our 250-gallon fish tank. Our state-of-the-art Englewood office (just outside of Denver) embraces innovation and technology to allow us to offer top-notch services.



Cavities…who needs ‘em? We specialize in preventative dentistry to keep mouths happy and healthy!



We use cutting edge technology to quickly, easily and safely diagnose issues before they become major problems.



We’ll get that adorable little smile looking good as new using the latest materials and techniques.



Suffering from dental anxiety? We get it. We offer a variety of safe sedation options to meet each patient’s individual needs.

About Dr. Paddy

Dr. Paddy, whose full name is Dr. A. Patrick Smithwick III (say that three times fast), is a Board Certified Pediatric Dentist and reached attending status at Children’s Hospital of Colorado. He draws on his education from Hobart College, University of Maryland College of Dental Surgery and New York University to provide your child with superior dental care.

Dr. Paddy uses the most up-to-date techniques and modern equipment and his mission is get to know each patient as a unique individual.

Read More about Dr. Paddy  Our Doctors

About Dr. Roger

Dr. Roger Castro is a pediatric dentist who helps kiddos maintain healthy smiles in Denver and the surrounding area. He attended the University of Maryland School of Dentistry and received his Doctorate of Dental Surgery degree. That’s where he made friends with his classmate Dr. Paddy! When he finished dental school, he headed to New York City and completed his residency in general dentistry at the Bronx-Lebanon Hospital Center.

It wasn’t long before Dr. Castro realized how much he enjoyed working with kids, so he returned to Bronx-Lebanon Hospital Center for a postdoctoral program in pediatric dentistry and even served as Chief Resident. Now, he treats children of all ages, including those with special needs. He absolutely loves his job and is dedicated to creating a fun, positive dental experience for kids and parents alike.

Read More about Dr. Roger  Our Doctors

Save time by downloading and filling out the Patient Forms prior to your child’s dental appointment.


Sometimes our bad habits like mouth breathing, thumb sucking, tongue thrusting and reverse swallowing, known as incorrect myofunctional habits to us folks in the dental biz, are the underlying cause of incorrectly developing jaws and teeth. Enter the Myobrace System, which is a nifty, natural way to fix those bad habits and exert light force to align the teeth and jaws into their natural position without braces.

The best part? No complex equipment and no mouth full of metal. You only need to wear a Myobrace appliance for one or two hours a day and overnight while snoozing.

Learn More

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.


We’d love to hear how we’re doing WRITE A REVIEW

Englewood Office

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


Stapleton Office

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


Thornton Office

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

Bring the Kiddos by!

Mom, Dad, we understand choosing the right Pediatric Dentist isn’t easy. Dr. Paddy is a specialist and will ensure that your child’s needs are top of mind.