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Gateway Dental


We are committed to caring for more than just your teeth, we commit to provide you with a beautiful healthy smile.

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Endodontic Specialty

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Periodontic Specialty

Keep Your Gums Healthy

Welcome to Gateway Dental

Family Dentistry in Seattle, WA

Welcome to Gateway Dental, our goal is to make sure that every dental visit is an excellent experience. Our caring team takes pride in offering high-quality dental care and addressing your questions and concerns to help you enjoy your visit. Our office provides dental care for the entire family to help establish excellent oral health from a young age for smiles that remain beautiful and healthy for a lifetime.

Our dental office utilizes the latest and best dental technology and services to provide you with excellent dental care. If you have any questions, you can always contact our office and let our friendly staff assist you. We look forward to your first visit to Gateway Dental!

Gateway Dental in Seattle Dental Team Photo

Dentist Near You.

Gateway Dental is conveniently located in downtown Seattle, WA in the Wells Fargo Center building. We serve the greater Seattle area, including neighborhoods: Pioneer Square, Pike Place Market, First Hill, and the Pike/Pine area.

Office Hours

Monday 7:00 am – 4:00 pm
Tuesday 7:00 am – 4:00 pm
Wednesday 7:00 am – 4:00 pm
Thursday 7:00 am – 4:00 pm
Friday 7:00 am – 4:00 pm
Saturday Closed
Sunday Closed

Meet Our Doctors.

G. Glenn Buchanan, DDS, PS

Dr. G. Glenn Buchanan finds tremendous joy in bringing out the healthy, beautiful smiles in patients of all ages.

Dr. Buchanan earned his undergraduate degree in Biological Sciences from the University of California at Irvine, and his DDS from Georgetown University School of Dentistry in Washington DC. With over 35 years of experience, Dr. Buchanan incorporates his expertise and current technology to provide his patients with the best in family, cosmetic, emergency, and comprehensive dentistry. He is a member of local and national dental societies and actively participates in continuing dental education.

Dr. Buchanan and his family relocated to Seattle from Southern California in 1992 and founded Gateway Dental Centre of Seattle that same year, followed by Reflections Dental Centre in West Seattle in 2005. Dr. Buchanan and his wife enjoy traveling to see their children and experiencing the beautiful Washington scenery while skiing, snowshoeing, or hiking with their beloved dog, Jack.

Tyler Buchanan DDS

Dr. Tyler Buchanan is a native of the Seattle area, and he loves practicing dentistry alongside his father Dr. Glenn Buchanan and the entire Gateway Dental team.

Dr. Tyler pursued his undergraduate degree at Rice University in Houston, TX, where he graduated in 2013. It was there he realized that dentistry would allow him to blend his strong science foundation and critical thinking ability into a career that is centered on patient care. He decided that dentistry was the career for him, and he continued his studies at the University of the Pacific, Arthur A. Dugoni School of Dentistry in San Francisco, CA. After graduating in 2017, he elected to return to Houston for a two-year General Practice Residency at the University of Texas Health Science Center. As the Chief Resident at UT Houston, he expanded the scope of his practice to include many oral surgery and advanced restorative dentistry procedures. Also critical to his program was providing emergency dental care at Memorial Hermann Hospital, Houston’s Level 1 Trauma Center. His most rewarding experiences were providing care to patients with special needs who had difficulty being seen in a traditional dental setting. Dr. Tyler returned to Seattle in 2019, and he has been practicing at Gateway Dental since 2021.

Dr. Tyler Buchanan at Gateway Dental in Seattle

"Top-Notch Care"

I’ve been receiving fantastic service and care at Gateway Dental for over 12 years. It’s easy to schedule, they’re on-time rate gives Alaska Airlines a run for their money, and staff is very friendly and professional. Most recently, had top-notch care from Dr. Winton, and also Dr. Scantlebury with help from dental assistant Quinton. Thanks Gateway!

– Dave K.

"Very Knowledgeable and Smart"

This is a really good dentist office and I recommend. The dentist is very knowledgable and very smart. The hygienist is very kind and skillful. The staff are also very kind and efficient with their work. The staff also takes care of the paperwork and explains everything very well. Good location too.

– Michael P.

"Their Service is Awesome"

Gateway Dental has been my dental clinic since I moved here in Seattle last July 2014. The staff are polite, sincere and very easy to talk with. Their service is awesome and scheduling is very flexible/easy to make! 🙂 Thank you Gateway for doing an amazing job! More power to you guys!

– Anne A.

Associations and Accolades

Our office is a proud member of many associations. We stay up to date on the latest in dental technology to ensure you have the most satisfying visit.

New Patient Experience!

$59 Exam & Digital X-Rays
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Frequently Asked Questions

Are you taking new patients? and do you take walk-ins?

Yes! We are accepting new patients, click on Request an Appointment to schedule your first appointment. You can also check out our Your First Visit page to be more informed on what you need. As for walk-ins, we will do our best to try to fit you in, but please make an appointment ahead if possible.

Do you accept my insurance? and how much is my insurance going to cover?

We accept most PPO insurances and some HMO, see list below. But if you would like to make sure that we accept your insurance feel free to call us to confirm your specific insurance.

  • Delta Dental
  • Met Life
  • Cigna
  • Humana
  • Aetna
  • Guardian
  • Principal
  • Assurant
  • Ameritas
  • United Concordia
  • Premera Blue Cross
  • Regence Blue Shield
  • Lifewise
  • Dental Health Services
  • Lifelong (Most PPO; not HMO)

As for how much your insurance will cover, it depends on your insurance and the type of coverage that you have, please call the office to receive more specifics.

Do you have a billing or payment portal?

Yes we do. Visit our payments page to take a look at your bill online and also pay your bill online.

Seattle, WA Family and Cosmetic Dental Office. Call our friendly staff today.

999 Third Ave, Plaza 18

          Seattle, WA 98104




Office Hours

Monday 7:00 am – 4:00 pm
Tuesday 7:00 am – 4:00 pm
Wednesday 7:00 am – 4:00 pm
Thursday 7:00 am – 4:00 pm
Friday 7:00 am – 4:00 pm
Saturday Closed
Sunday Closed

Office Hours

Monday 7:00 am – 4:00 pm
Tuesday 7:00 am – 4:00 pm
Wednesday 7:00 am – 4:00 pm
Thursday 7:00 am – 4:00 pm
Friday 7:00 am – 4:00 pm
Saturday Closed
Sunday Closed