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Our Doctors

Our Doctors at Yamaguchi Family Dentistry maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field.

Dr. Garret Yamaguchi

Dr. Garret was born and raised in Olympia, Washington. He earned his undergraduate degree in Science and Management from Claremont McKenna and later received his Doctor of Dental Surgery from the University of Washington.

Dr. Garret is a member of the American Dental Association and the Washington State Dental Association. While attending UW, he served as the student body president. He has continued his involvement by serving on the Board of Trustees for the UW Alumni Association.

Dr. Garret continues to hone his knowledge and skills by attending various seminars and courses. He has expanded options for patients by providing services in cosmetic surgery and dental implants.

Away from work, Dr. Garret enjoys an active lifestyle with his wife, Dr. Stefanie, and their daughter, Elle. He plays the violin and enjoys participating in many sports including running, golf, basketball, snowboarding, and weightlifting.

Dr. Stephanie Hamamoto

Dr. Stefanie Hamamoto is a Husky for life. She earned both her undergraduate degree and her Doctor of Dental Surgery from the University of Washington. Dr. Hamamoto has dedicated her career to providing only the finest dental care available and utilizing the latest dental technology.

Dr. Stefanie Hamamoto is a member of the American Dental Association, as well as the Washington State Dental Association. She has advanced training in esthetic dentistry, periodontal surgery, and Invisalign orthodontics.

You're most likely to spot Dr. Hamamoto on the streets running a half marathon or enjoying quality time with her family.

Meet Our Team

Our dedicated Yamaguchi Family Dentistry team of hygienists, 
dental assistants and admins are here to make your visits pleasant and comfortable.
Margie - Office Manager


Office Manager
Phone: (425) 488-1480


Financial Coordinator / 
RDA Supervisor


Patient Coordinator / RDA





Patient Coordinator