We shall never know all the good a simple smile can do.

Smiles, inside and out

Without question, a smile is one of the most distinguishing characteristics of a person. It shows happiness and excitement and is inviting to others. A smile can absolutely change someone’s life. It speaks a language everyone understands.

Dr. Peterson, Dr. Caskey, Dr. Peppers, and their team understand the importance of a healthy, beautiful smile. Our goal is to deliver exceptional care and treatment to our patients and their families and friends. We strive to meet this goal by providing excellent contemporary, state-of-the-art orthodontic treatment in a kind, compassionate, and fun environment. Our concern is not only the end result but the experience along the way.

We sincerely want every patient’s orthodontic treatment to be a positive life experience. We hope our office is always a reflection of our love for our patients, our community, and our profession. We consider it a great blessing to do what we do. And that’s one of the countless reasons we are smiling!

Celebrating over 20 years of serving northern Arizona!

Dr. Eric Peterson

Dr. Eric Peterson graduated from Baylor College of Dentistry in 2002 with his Doctor of Dental Surgery degree. He then completed a general practice residency at the University of Utah Hospital from 2002 to 2003. From 2003 to 2005, he attended the Saint Louis University Center for Advanced Dental Education to earn his Master of Science in Dentistry degree and specialize in orthodontics.

Aside from private practice, Dr. Peterson is also involved with the Winslow Indian Health Care Center by treating patients and lecturing to the doctors at this clinic. Dr. Peterson is also a member of the American Association of Orthodontists, the American Dental Association, the Arizona Dental Association, and the Rocky Mountain Society of Orthodontists.

He has a love for the outdoors and enjoys spending time mountain biking, skiing, and trail running. In recent years, Dr. Peterson has completed a number of ultramarathons. Dr. Peterson and his wife Angie are blessed to have two wonderful children, Luke and Reese.

Dr. Emily Caskey Peppers

Dr. Emily Caskey Peppers grew up in Flagstaff and attended the University of Arizona in Tucson for college.

She then obtained her Doctor of Dental Surgery degree from the University of Colorado in 2009. In addition, she completed a General Practice Residency at the University of Chicago from 2009 to 2010. She graduated from orthodontic residency at Loma Linda University in California in 2013, where she earned a Master’s degree and a certificate in the specialty of orthodontics. Her Master’s research paper won an award from LLU and was recently published in the prestigious Angle Orthodontist journal.

Dr. Peppers is a member of the American Association of Orthodontists, the Pacific Coast Society of Orthodontists, and the American Dental Association. Dr. Peppers and her husband, Eric Peppers, both love the outdoors – especially hiking, backpacking, and skiing – and they love northern Arizona for all the outdoor adventures it offers. Dr. Peppers also enjoys running, and she recently completed her personal goal of running 10 marathons. Dr. Peppers is very excited to be back in her beautiful hometown of Flagstaff to practice orthodontics.

Dr. Robert Caskey

Dr. Caskey attended the University of Washington and obtained his Doctor of Dental Surgery in 1982 and his Master of Science degree in orthodontics in 1988. He has been practicing orthodontics for more than 20 years.

To stay up-to-date on the latest advancements in orthodontics, Dr. Caskey is a member of many professional organizations, including the American Association of Orthodontists, the Pacific Coast Society of Orthodontists, the American Dental Association, the Arizona State Dental Association, and the Arizona Orthodontic Study Group.

Our Playground

Living in northern Arizona gives us all something to smile about. We can all appreciate the beautiful surroundings in which we live and the countless activities this environment provides. Dr. Caskey, Dr. Peterson, and Dr. Peppers wanted to bring these outdoor adventures inside. We are confident you will find our office unique, comfortable, fun, and inviting. We want every aspect of your orthodontic experience to be the best it can be!

We want you to be excited about coming to your orthodontic appointments! We have a fun saltwater fish tank, a waterfall, an Xbox and Playstation, computers with wi-fi, a photo slideshow, and TVs with family-friendly videos playing for your enjoyment.

We also have a reward system where patients earn points for toys, gift cards, sports equipment, iTunes cards, movie tickets, etc. We have found that this is a fun and rewarding way to encourage patients to brush their teeth and take care of their braces.

This is what makes our job so wonderful! We love getting to know our patients and their families. Not only do we get to watch kids grow up while we are improving their smiles, but they keep us young too! Our adult patients also brighten our day through the relationships we build with them and the joy they exhibit as they see their smiles transform. We really do consider all these things a special privilege, and it’s what makes our profession so great!

Orthodontic Braces and Treatment

Orthodontic technology has progressed tremendously! Gone are the days of huge bulky braces that exerted excessive forces. Braces are now low-profile, smaller and more aesthetic. We offer clear brackets for a more “invisible” treatment alternative or conventional brackets that can have colored ties (also called o-rings) placed on them. These ties are changed at every appointment and are a lot of fun! The wires we use are super-elastic or “memory wires” that exert lower forces over longer periods of time and are more comfortable to patients. We also offer contemporary bite correctors such as the Herbst appliance, Forsus Springs, etc. The radiographs we take are all digital, which essentially reduces the amount of radiation to the patient by 60 – 80%. We also offer complimentary e-mail reminders, or patients can opt for text-message reminders.

In addition, we work closely with our patients’ dentists should a collaborative approach be needed for the best outcome possible.


Len was one of our awesome adult patients! He was also one of the excellent basketball players for NAU, and we are very proud of him!

Orthodontic treatment has become increasingly popular with adults for a variety of reasons. Traditional braces of Invisalign are common ways to improve one’s smile. So whether you are 12, 30, or 60, it doesn’t matter! A new smile can give you renewed confidence and something new and exciting to smile about!

We have such awesome patients!

Pure Happiness

You can see it in our patients’ eyes when they are done with their orthodontic treatment and they have a new, beautiful smile! It really is an outward expression of an inner feeling, and, without question, many patients simply just can’t stop smiling once their treatment is complete. There is a higher confidence level, a greater sense of self-image, and a radiant look to someone who has a new, straight, healthy smile.


Our trusted fireman! Keith went through orthodontic treatment using Invisalign, a clear aligner technology. Now his smile is looking awesome and he is ready to take on the world!

Invisalign® – Clear Aligner Technology

Invisalign® can be an excellent alternative to conventional braces for some patients. As the name suggests, Invisalign® is nearly invisible, so people won’t even know you are wearing it. Patients adjust easily and quickly to Invisalign®, and with this treatment, there are no wires to poke you or brackets to come loose.

The Invisalign® process consists of a series of clear trays called aligners that exert forces on the teeth, moving them into position. Aligners are worn for two weeks at a time and are then replaced by the next set in the series. Each set of aligners straightens the teeth a little more than the last. The aligners can also be removed when eating, brushing, or flossing. And when you are finished with the last set of aligners you are left with a beautiful smile!

Invisalign® can be used on teens and adults. There are essentially three main modalities: Invisalign® Express, Invisalign® Teen, and Complete Invisalign® Treatment. If you are considering braces and would like the convenience of the Invisalign® process, we can evaluate your dental condition to see if you would be a good candidate for this technology. If so, we can also determine which modality would work best for you.


“We just wanted to brag a little about Dr. Peterson, Dr. Caskey, Dr. Peppers, and their staff. My son has always received wonderful care at Northern Arizona Orthodontics. The doctors and staff are very kind, helpful, and knowledgeable. The office is very warm and welcoming with fun décor and video games to keep your child entertained. My son’s awesome smile says it all, and we could not be happier with the end result. We would highly recommend this skilled team for any of your orthodontic needs. You and your child will be in good hands.” – Pam and Zach

“I can’t say enough good about Northern Arizona Orthodontics. Their staff are always professional and friendly. The office provides a comfortable environment for any patient, young or old. The free consultation along with their willingness to work out a very flexible payment plan make them unbeatable. I highly recommend them.” – Damien

“The doctors and staff at Northern Arizona Orthodontics are really exceptional!!! They are helpful, friendly, knowledgeable, and compassionate! Dr. Emily was very thorough in explaining everything during our daughter’s first visit and went over several treatment options for her orthodontic needs. She made our little girl (five years old) feel very comfortable and listened attentively to her/our questions and comments. We are so happy with our decision to use Northern Arizona Orthodontics for our family!” – Beth

“We have had a wonderful experience throughout my daughter’s orthodontia treatment with Northern Arizona Orthodontics. Dr. Peterson and his staff have been extremely professional and exceptionally courteous for each visit. I always appreciated the personal phone calls from Dr. Peterson later in the evening or that week if my daughter received new or potentially uncomfortable adjustments to her braces, just to check up to make sure everything was OK…We received honest and understandable treatment plans and were continually updated on her progress at each visit. I would highly recommend Dr. Peterson and his staff for any orthodontia treatment in Flagstaff.” – Jamelle

“Totally AWESOME!!! Dr. Peterson is the best!! He takes the panic out of scary stuff in the mouth! My son was VERY apprehensive about everything orthodontia and Dr. Peterson knew just how to talk with him, joke with him, and put him at ease about all of it!! THANK YOU, Dr. Peterson!!! WE LOVE YOU!!!” -Kristie

“What an AWESOME group of professionals. I cannot believe there are so many kind, considerate, friendly people all working in the same office. It is always a pleasure to come in. Thank you for everything…especially fixing my teeth.” – J. Gregerson

“All three of our children have been to Dr. Caskey and Dr. Peterson. They are both conscientious and perfectionists, as well as personable. Their staff is friendly and kind to all the patients and their parents. I would highly recommend them!!” – M&M

“We have consistently been impressed with the quality of care received and greatly appreciate the follow-up phone calls from Dr. Peterson. The front office staff are very knowledgeable and pleasant and have always been helpful with billing questions and with making or rescheduling appointments. I have and will continue to refer others to your office. Thanks for all the hard work you put into making your office such an excellent place!!” – Dena S.

“Our family is getting ready to send our fourth child for treatment with Dr. Peterson and Dr. Caskey. The staff at Northern Arizona Orthodontics always goes above and beyond to make sure our needs are met, and we are happy with the services we receive. We won’t go anywhere else! We love Dr. Peterson and Dr. Caskey, and they show great care in helping their patients achieve a picture-perfect smile. Before ending treatment, they make sure that their patients receive nothing other than perfection with their new smile!” – Google review from a parent

“I appreciate that the assistants and Dr. Peterson value communicating with the youth patients. That practice has always made my son and daughter feel important.” – D. Womble

“Dr. Peterson and the entire staff are awesome! It had been a goal of mine for years to straighten my teeth. Getting braces is one of the best things I have ever done for myself! I can’t stop smiling! I encourage adults contemplating orthodontic treatment to JUST DO IT!!! Thanks so much!” – Christy

“Dr. Robert Caskey has been my son’s orthodontist for almost two years now. He has been wonderful in taking the time to speak with me about my son’s progress and their staff is very friendly and very accommodating. We got other diagnoses and estimates before deciding on Dr. Caskey. He truly seemed to care the most and we have been very satisfied with our decision to make him our son’s orthodontist.” – Connie

“You are an amazing group of people! You are so very caring, attentive, and personal with each patient. Your ‘above and beyond’ in being available at the last minute and after hours for emergencies no matter how small shows that you truly care and gives a mom true peace of mind. We have referred friends to you and will continue to do so. Thank you for your years of expertise and love!” – L. Fleming

“Dr. Caskey is just a wonderful person in addition to being a caring, trustworthy, communicative, and attentive doctor.” – G. Pearlmutter

“Dr. Peterson is extremely professional and also fun! My three girls love him. The office is beautiful and modern with all the latest technology. The staff is always courteous and knowledgeable. We always feel that any concerns are addressed promptly and leave with a smile. We don’t hesitate to recommend him to anyone looking for a great orthodontist.” – Beth

“I have told family members and friends about your offices and all the, shall we say, amenities. Dr. Peterson has such a great connection with my kids and their level of comfort with Dr. Peterson and staff makes this experience very pleasant and no complaints about appointments or feelings of anguish when it is time for their appointments. WE LOVE YOU ALL.” – Theresa T.

“I can’t say enough good things about Northern Arizona Orthodontics. The facility is modern and state-of-the-art with special details that make the office very kid/teen friendly. Drs. Peterson, Caskey, and Peppers are amazing, love what they do, and are 300% committed to making smiles beautiful.” – Anna

“I was very pleased with the plan of treatment and the explanation I received from Dr. Caskey. I was more pleased with the overall cost which was more reasonable from where my daughter had her orthodontic care. Thank you.” – S. Poolheco

“Everything about dealing with your office was wonderful! I am very impressed with everyone. Thank you for such a positive experience.” – Misty I.

“I have had two kids go through braces in your office and I have never had a single complaint. Everyone from the staff to Dr. Peterson and Dr. Caskey are outstanding. I have referred multiple people already and will continue to do so in the future. Thanks for all you do!” – D. Wertz

“Dr. Peterson is AWESOME!! I had braces as an adult (for the second time) and finally the results are what I had always hoped for. His staff was courteous and helpful, always willing to squeeze me in for another appointment or to find a time that would work for my schedule. The office décor is unique and pleasant, but it’s the great quality of care that impressed me the most. I would recommend this office to anyone!” – Google review from a patient

“Northern Arizona Orthodontics is a first-class operation. The atmosphere is unbelievable. The doctors and staff are very helpful, patient, and put the customers at ease. My niece can’t say enough good things about Dr. Peterson. He is a good person and amazing doctor.” – O. Manson

“The doctors in this office know how to do orthodontics well! They’re very professional and they make sure they get it right! What is very [cool] is how much they LOVE their job! That whole office of people, from doctors to staff, are smiling from beginning to end. We highly recommend them for children, teens, and adults!” – Diane

Community Support

We love supporting our community, and giving back is something that is very important to us. By supporting patients’ sporting teams, cheer clubs, church activities, 4-H, science, art, and music organizations, etc., we get to be part of their lives outside the office. It’s awesome being part of such a wonderful community and being able to support our patients as they learn and grow. Our wall of “thank-yous” makes us smile every day!

Let us give you something to smile about!

Complimentary Consultation

If you are considering improving your smile, we are confident we can help you!

We always provide complimentary orthodontic consultations to all patients. There is never any charge for this appointment, nor do we every charge for an x-ray that we may need to take at this appointment for diagnostic purposes. We feel this is a wonderful service to our community as it allows all prospective patients to inquire about their possible orthodontic needs, discuss treatment options they may have, and obtain an estimate of treatment costs should treatment be recommended. Again, this service is always provided at no cost to all who visit our office. It gives you the opportunity to see our office and everything we have to offer as part of your orthodontic treatment. We put our hearts into what we do and we are confident you will experience that!

For further information, please visit our website at or call 928.774.2745 to set up a free consultation appointment! We are located at:

206 W. Hunt Avenue
Flagstaff, AZ 86001

We look forward to seeing you soon!