Learn More About Our Practice

Dr. Shiotsu and Dr. Tam would like to personally invite you to explore what makes our practice unique and special.

About us.

Located on Mercer Island, WA our office provides general dentistry and total care to the eastside community! One unique part of our clinic is that Dr. Shiotsu and Dr. Tam are both certified clinicians in using dental microscopes to perform restorative dentistry. We believe in building patient relationships based on mutual trust, respect and excellent customer service.

Our office focuses on patient education and we encourage you to ask questions so that you can make informed decisions about your oral health condition. In doing so we hope that each patient has an active role in their care while in our office.

Meet the Doctors

Dr. Goichi Shiotsu

After graduating cum laude from the University of California, Irvine. Dr. Shiotsu earned his dental degree from the University of California at San Francisco, the #2 ranked dental school in the nation. While there, he was awarded the Regents' Scholarship for high academic achievement.

Following dental school, Dr. Shiotsu stayed in San Francisco where he completed a two-year postgraduate program in Advanced Education in General Dentistry, maintaining a special emphasis in Hospital Dentistry, Geriatric Dentistry, and Clinical Teaching. While receiving his advanced training in General Dentistry, Dr. Shiotsu found his passion in helping patients with complex dental issues often requiring dental implants, so he decided to pursue a specialty in prosthodontics. Upon completion of this training, Dr. Shiotsu moved to Southern California, where he completed two separate postgraduate programs in Prosthodontics and Implant Dentistry at Loma Linda University. He is trained and certified in microscope enhanced dentistry.

Dr. Shiotsu is highly respected by his colleagues, who often refer their patients to him for help in resolving complex and challenging dental situations. He is one of a handful of dentists in the U.S. to receive certified university-based specialty training in both the surgical and restorative aspect of implant dentistry. He is a national lecturer and an author, often asked to speak on the topic of implants and esthetic dentistry.

He is a member and the past president of the Washington State Society of Prosthodontists, and a member of the exclusive, prestigious Academy of Osseointegration. He is also a member of Washington State Dental Association where he was elected and served as member of house of delegates for two years (2013-2014). Dr. Shiotsu has been voted one of the area's Top Dentists by Seattle Metropolitan Magazine every year since 2011.

Dr. Shiotsu believes that education is a lifelong endeavor. He is passionate about dentistry because he has seen so many lives transformed with enhanced function and confidence.

He had been an active member of the Mercer Island Rotary Club from 2011 to 2020 where he served on the Youth Exchange Committee. He also served on the Mercer Island School District's Superintendent's Advisory Council.

Dr. Shiotsu enjoys playing golf, tennis, yoga and spending time outdoors with his family.

Dr. Ryan Tam

A native of Washington state, specifically Mercer Island, Dr. Tam graduated from Mercer Island High School in 2011 and then completed a Bachelor's of Science degree in Neurobiology at the University of Washington (UW). His strong interest in both art and science led him to the UW School of Dentistry, which he graduated with a Doctorate in Dental Surgery (DDS) in 2020.

Dr. Tam started his career as a volunteer dental assistant at the Dental Fears Research Clinic while at the UW. From there, Dr. Tam got involved with research on topical fluoride use and its effectiveness in preventing cavities.

During his undergraduate studies, Dr. Tam also worked both as a chemistry tutor and science educator at the Pacific Science Center. He strongly believes in the importance of science education and understanding how our oral health and teeth impacts our overall well-being.

Throughout dental school, Dr. Tam volunteered after school and on weekends, delivering care to underserved populations at the Union Gospel Mission in Seattle and in Longview, WA.

Dr. Tam consistently takes continuing education courses to master skills in delivering patient care. Dr. Tam is certified to use the microscope for restorative dentistry. He is also trained and credentialled to administer oral conscious sedation for patients with high dental anxiety. He strongly believes that good oral health is the prerequisite for a long and healthy life.

He understands how most people experience anxiety over dental visits out of fear of pain, unpleasant experiences, and many other factors. He acknowledges such anxieties by listening to patients' concerns and does his best to accommodate them by soft-touch treatments and providing them with thorough information. Dr. Tam believes in listening to patients' needs and desires, while educating them on their oral conditions based on the most up-to-date protocols and guidelines set by the ADA. In his spare time, Dr. Tam enjoys swimming and working out at the YMCA.

Meet Our Team

Linda Konishi

(Dental Hygienist)

Lori Matsumura

(Dental Hygienist)

Atsumi McGrath

(Lead Dental Assistant)

Tim Wong

(Dental Assistant)

Esther Cho

(Dental Assistant)

Jennifer Hansen

(Dental Assistant)

Valerie Henderson

(Dental Assistant)

Kelly Jinguji

(Dental Assistant)

Tomoko Shiotsu

(Office Manager)

Kelsey Fukuda

(Front Office)

Anna Clarke

(Front Office)


(Office Dog)

Video Testimonials

Our patients say.

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