The care we provide is comprehensive, quality, predictable and long-lasting to achieve your optimal oral health. We believe a healthy smile is often the vanguard of a healthy body and attitude. Your smile is the ever-present product of our efforts.

At Dental Horizons, we understand and cater to the varying and individualized needs of patients, which explains why we see ourselves as a one-of-a-kind Longmont dental practice. We serve the community of Longmont, Boulder and the surrounding area, not only as health care providers, but as a positive influence in our community. Longmont dentist, Dr. Andrew Kelson sees the creation of value as an ongoing process. It starts with your First Visit and continues with you every time life gives you reason to smile. Through your input and our staff’s commitment to stay on top of the latest and best in new oral health practices, we continually add value so we can offer you the best possible path to oral healthcare. If you see many smiling faces, our office may be nearby! So whether you are looking for a Longmont dentist or a dentist in Boulder, we would love to serve you. 

Dental Implants

Meet our Doctors

Andrew Kelson, DDS

Dr. D. Andrew Kelson grew up in Portland, Oregon. He studied Business Information Systems at Brigham Young University and then moved to Ohio to earn his dental degree at The Ohio State University. In 2005, he graduated cum laude while working with two faculty members on dental research projects. He then finished an Advanced Education in General Dentistry at the University of Michigan where he gained significant experience while applying comprehensive care to complex cases. He enjoys the outdoors, reading, computers, and is a self-proclaimed nerd. Dr Kelson and his wife stay busy with their two children.

Krista Beseda, DDS

Dr Beseda was born and raised in Denver. She attended Colorado College where she studied geology and anthropology, and then did a brief stint up in Breckenridge working front desk at a hotel and exploring life as a ski bum. During this time, she did service trips that took her through Argentina, Ecuador and New Zealand. She met her husband, Taylor, playing kickball in Denver and he supported her adventure through dental school at the University of Colorado. In dental school, she did another trip to Guatemala to provide dentistry to children and upon graduation she was honored with membership to the OKU honor society. She married Taylor in Estes Park and quickly began a residency at the University of Colorado to advance her training in complex general dentistry and is now working on her Fellowship in general dentistry.

Our Professional Memberships Include


Why our Patients love US

“Everyone is competent and made me feel I was in good hands and gave me good news = no cavities! Thank you!”


I’ve been very happy with the service and people for myself and my kids for nearly ten years.

Neil R.

I really love how friendly and supportive all of the staff is at Dental Horizons!

Julie B.

Everyone at the office is always friendly and knowledgeable. From the moment you arrive you feel welcome and comfortable.

Rebecca W.

The care we provide is comprehensive, quality, predictable and long-lasting