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Dentist
1751 Hover Street Suite A2 Longmont, Colorado 80501
$19 new patient exams
Request an AppointmentAt Comfort Dental – Longmont, we’re proud to provide high-quality, affordable dental care in a friendly and welcoming environment. Our experienced team — Dr. Stephen Sidwell, Dr. Aaron Mortensen, Dr. Derek Petersen, and Dr. David Dinsmore — is committed to helping you and your family achieve healthy, confident smiles. If you’re looking for a dependable dentist in Longmont who offers personalized care and modern solutions, we’re here to serve you.
In keeping with Comfort Dental’s overarching mission, we strive to make sure everyone who needs quality dental care gets it. That’s why we have flexible scheduling and set aside time each day to handle any emergencies that come through our doors. We also promise reasonable fees, and we have a Gold Plan for uninsured patients.
At our dental office in Longmont, we have already cared for more than 16,000 people in the community, and we’re committed to caring for many more. Because of our affordable rates, convenient hours, and soothing atmosphere, we’ve made a name for ourselves as one of the best practices in the area, and it’s an honor we carry with pride.
Choosing the right dentist in Longmont means finding a team that values your comfort, listens to your concerns, and delivers consistently excellent results. At Comfort Dental – Longmont, we treat every patient with care and respect, whether you’re here for a routine cleaning or a complex procedure. We accept most insurance plans, offer flexible scheduling, and keep our prices affordable so you never have to choose between your health and your budget. From preventive care to advanced restorative treatment, we’re here to support your long-term dental wellness.
Stephen Sidwell
All Comfort Dental dentists are graduates of accredited dental programs and are licensed by the state in which they practice. They have chosen to purchase a Comfort Dental franchise in order to achieve their professional goals.
Aaron Mortensen
Dr. Aaron Mortensen is a native Coloradoan who has always loved the mountains and all that this state has to offer. He and his wife have four children who are involved in sports, rock climbing and music lessons. In 2005, Dr. Aaron received a degree in Neuroscience from Brigham Young University while minoring in Art History. He graduated from the Arizona School of Dentistry and Oral Health in 2009. He became a partner at Comfort Dental in Longmont that same year. He enjoys the variety of procedures performed by general dentists, and he especially appreciates getting to know the good people in Longmont and the surrounding areas. He's been at the Longmont location ever since 2009. He loves his staff members and is proud of their successes and growth. When time permits, Dr. Aaron enjoys music, concerts, sporting events, very old art, hiking, and timepieces. He speaks French and is improving on Spanish. He and his family are very involved in their faith and church. He looks forward to seeing you soon!
Derek Petersen
All Comfort Dental dentists are graduates of accredited dental programs and are licensed by the state in which they practice. They have chosen to purchase a Comfort Dental franchise in order to achieve their professional goals.
David Dinsmore
**Graduate Loyola University Dental School** Emotional Focused Therapy Study- Dr Sue Johnson 2021; Former Fellow American Academy of Pain Management; Former American Academy of Sports Dentistry, Former American Academy of Head, Neck and Facial Pain; Certified Professional and Organizational Coach; Former Fellow International College of Cranial Mandibular Orthopedics, Former Certified Neuromuscular Massage; Former certified hypnotherapy; Former certified Strength and Conditioning Coach; Former American College of Sports Medicine; Former International Sports Sciences Association; Former Medical Acupuncture for Physicians; Center for Mind-Body Medicine CE studies - University of Minnesota Medical School; Robbins- Madanes Coach Training Study; Former Certified Neuro Linguistic Programing; Former Certified Wilderness First Responder; Marriage Dynamics Marriage Class Facilitator (with my wife, Jane) since approximately 2006 - 2022
Alice Jou
All Comfort Dental dentists are graduates of accredited dental programs and are licensed by the state in which they practice. They have chosen to purchase a Comfort Dental franchise in order to achieve their professional goals.
Download our intake forms to save time on your check-in.
We’re happy to work with most insurance plans. Visit our Insurance page or contact our office to confirm your plan and benefits.
Sign up for our discounted membership plan.
Want to visit an affordable, expert dentist in Longmont, so you’ll know your smile is in good hands? Comfort Dental in Longmont is here to make dental care easy, affordable, and comfortable for patients of all ages. Whether you need preventive services or advanced restorative treatment, you can count on our team for compassionate care and reliable results. If you’re searching for a dentist in Longmont who puts your health and comfort first, we invite you to schedule your visit with us today. Give us a call today at (303) 678-7783 and make an appointment! We’re ready and waiting to hear from you.
If you’ve never been to our office in Longmont, here’s an easy route you could take to reach us. Starting from the Longmont Public Library, head north on Kimbark St, then turn left onto 9th Ave. After 1.6 miles, turn right onto Hover St. In another 1.1 miles, once you pass the intersection with 17th Ave, turn left and left again into our parking lot. We’re at 1751 Hover St Ste A-2.
Yes. Walk-ins are welcome during opening hours, and emergencies are seen the same day wherever we can. Booking ahead still gets you the shortest wait.
We work with many major dental insurance carriers, including Delta Dental, Cigna, MetLife, Aetna, UnitedHealthcare, Guardian, Humana, Anthem, and others. Call our office for specific details.
Don’t have dental insurance? Our Gold Plan offers an affordable alternative, with savings on preventive care and 20% off eligible in-house dental procedures. Benefits and pricing vary by location.
Most Comfort Dental locations are open 7:30 am – 7:30 pm Monday - Friday and 7:30 am – 1:30 pm on Saturdays, making it easier to fit dental care into your schedule. Hours may vary by location.