You and Your Family Can Trust.
From the second we answer your phone call to the moment you step out the door, you’ll feel at ease. Our passion is taking excellent care of patients from start to finish. We’re proud to offer treatments in-house that are normally referred out in order to maximize your comfort and meet your needs. We want to care for you.
Our team will welcome you by name and offer any number of comfort items to make your entire experience exceptional. We promise to take exceptional care of you and your family.
Meet the Doctors
We want you to know us professionally as well as personally. It’s not just about what we know, it’s also about ensuring you’re comfortable with who we are. Click the buttons next to any of our photos to read more about our experience, our lives, and our interests.
Dr. Mark Costes
Dr. Mark Costes is far from a typical dentist and dental coach. During his career, he has been able to start or acquire over a dozen successful dental practices during some of the profession’s most challenging times.
Dr. Wayne Woellhaf
Dr. Woellhaf believes in preventive dental care and patient education. He prides himself on being honest and forthcoming about a patient’s dental needs.
Dr. Sean Reed
Dr. Reed continues to learn how integral oral health is to one’s overall health and aspires to improve his patients’ lives as a whole through exceptional dentistry.
Dr. David Jong-Hyuk Won
Dr. David Won is a certified Invisalign provider. His main goal is to provide satisfactory levels of patient care while patients and doctors agree with the treatment plan.
Dr. Micah Weisenberg
Dr. Micah Weisenberg is an exceptional dentist that is always looking to improve his skills and patients’ treatment. Every year he attends 2-4 times the required amount of continuing education in order to be the best dentist he can be.
Dr. Michael Kleeman
Dr. Kleeman is an active member of various professional organizations and fulfills his passion for giving back to communities in need by participating in domestic and international outreach trips, providing dentistry to the underserved.
Quality Care and Service
When we say Quality Care and Service we stand behind that. Each of our team members is committed to your complete comfort. We are aware of your dental anxiety and welcome patients who are afraid of the dentist. We hope to earn your trust for years to come and welcome you to the Horizon Dental Family.
Empowering Health and Safety with the Right Dental Technology
At all four Horizon Dental Group locations you'll discover dental care at the highest level possible. Technology, advanced training, and compassionate service blended perfectly together.
Cone Beam / 3D X-Ray
The complex structures of your jaw region can be difficult to decipher on flat, single dimension x-rays. But advanced 3D imaging brings an unprecedented ability to understand the conditions of your mouth like never before.Learn More
Digital films with exquisite detail and dramatically reduced radiation exposure offer the ultimate in safety and diagnostic capability.Learn More
432 W. Butterfield Road
Chino Valley, AZ 86323
Monday: 9 am - 4 pm
Tuesday: 8 am - 4 pm
Wednesday: 8 am - 4 pm
Thursday: 8 am - 4 pm
Friday - Sunday: Closed
919 12th Place Suite 7
Prescott, AZ 86305
Monday: 9 am - 4 pm
Tuesday: 8:30 am - 3:30 pm
Wednesday: 9 am - 4 pm
Thursday: 10 am - 5 pm
Friday - Sunday: Closed
7890 E. Florentine Road
Prescott Valley, AZ 86314
Monday: 8 am – 4 pm
Tuesday: 7 am – 6 pm
Wednesday: 8 am – 5 pm
Thursday: 7am – 6pm
Friday: 8 am – 4 pm
Saturday - Sunday: Closed
Dr. Costes and his staff at Prescott Horizon Dental Group provide kind, caring, professional and affordable dental care. I am very grateful that they have an office in Prescott and that I can experience all they offer when I need dental care.
- Patricia Quinlan-Genter
Dr. Costes was great and replaced my bridge and fixed a loose filling. Fast and painless everyone in his office was friendly and I appreciate how attentive they were and hope I don't need to go back for more than a cleaning but I wouldn't go anywhere else if I need to get work done.
- Tony C.
Not what you would expect from a small town dental office. I drive all the way up from Phoenix to see Dr. Costes. He and the staff are THAT GOOD! Super clean facility and I am always greeted with smiles and friendly faces. With all my choices in the valley, I still choose to make the trek up to Chino Valley!
- Richie D.
Great dental office. Everyone was incredibly helpful and explained everything so well. I love that the staff and Doctors volunteer to help people who can't afford dental care. The office is clean and I would recommend it to anyone and everyone. It's worth the drive.
- Chama C.
I have been seeing Dr. Costes at the Horizon Dental group since I moved into the area. He and his team are fantastic. They made me feel comfortable and at home. They took time to answer my questions and concerns. I would highly recommend the Horizon Dental group if you need a dentist who is friendly and kind.
- Jason B.
The staff are always superb from start to finish. From the moment I walk in the door until checkout I'm made to feel welcome and part of the "family". My hygienist Kristi was very professional and expressed great care with all of my concerns. I suggest Horizon Dental to anybody looking for new dental care or new to the area.
- Jason Gardner
I recently had some dental work done at Horizon Dental in Chino. The Horizon team removed my stress with their professionalism and compassion. My appointment started on schedule and the after care recommendations from Darla were much appreciated. Thanks Horizon!!!
- Ted Michael
Dr. Costes and his team are amazing. They work with you and let you understand what is going on. I do not have dental insurance, but they offered a discount plan called Ambassador, and I now can afford all the dental treatment I need! The staff is very compassionate and personable! I'm not going anywhere else, this will always be my dental office!
- Mikay Kay M.
LOVE LOVE LOVE Dr. Mark and all the team!! Amazing, wonderful, kind, cheerful, efficient, caring, careful, beautiful work, all the time, every time!!! Can NOT ask for better!