Welcome to Robert O'Brien Family Dentistry

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Creating beautiful and healthy smiles since 1999, we specialize in dentistry for the entire family.  We place a premium on patient care and service.  Dr O’Brien has been practicing quality family dentistry for over 24 years -- with 17 years in Longmont.

Dentistry the way it is meant to be. Simple.

Our Longmont dentist, Dr Robert O’Brien, is happy that you are here; taking steps toward a healthier, more attractive smile. O’Brien Family Dentistry has a team of caring dental professionals dedicated to bettering the dental health of all our patients.  We are with you from start to finish.  Our goal is to provide friendly, personalized dental care that will keep our patients smiling…for life.

We offer a comprehensive list of general dentistry services that include:

Dental Care for the Whole Family

Experts in primary dental care O’Brien Family Dental, conveniently located in Longmont, provides prevention, diagnosis, and treatment of a wide variety of conditions affecting the teeth, gums, jaw and face. We seek to avoid problems through prevention (come in for a dental exam and teeth cleaning today) or detect and treat problems as soon as possible.  We utilize the latest in dental technology and training so you can rest assured you’re in excellent hands.

Visiting the dentist doesn’t need to be complicated. It should be an easy and streamlined experience, and that’s exactly what you’ll get with Dr. O’Brien and his dental team in Longmont, Colorado. Dr. O'Brien is well regarded for his caring and conservative approach to dentistry. He takes the time to listen to your questions and concerns and serves as a long-term partner who can help you and your family maintain and improve your dental health. Schedule your gentle dental appointment today with the most compassionate dentist in town.

Office Hours

Monday 8 am – 5 pm
Tuesday 8 am – 5 pm
Wednesday 8 am - 5 pm
Thursday 8 am – 5 pm
Friday By appointment
Saturday Closed
Sunday Closed


1446 Hover Street, Suite 100
Longmont, Colorado 80501
(15th & Hover)

Click here for a Map

Contact Us

Phone: (303) 684-9700
Fax: (303) 648-6088
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Schedule An Appointment

Same day appointments available.

Request an appointment online.

New patients welcome.

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