Meet Our Team

Our Doctors

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

  • Dr. Stefanie 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.

    Dr. Stefanie Hamamoto
  • 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. Garret Yamaguchi
  • Dr. Cheyne Horie

    Dr. Cheyne grew up in the vibrant community of Aiea, Hawai‘i, where a love for the outdoors and close-knit family values shaped his outlook on life. He went on to pursue his dental education at Creighton University, where he developed a strong foundation in both the science and artistry of dentistry.

    Following dental school, Dr. Cheyne proudly served as a Dental Officer in the United States Navy. His time in service deepened his commitment to providing high-quality, compassionate care, while also giving him the opportunity to serve people from all walks of life.

    Today, Dr. Cheyne brings that same dedication and passion for dentistry to every patient he treats. Whether restoring smiles, improving oral health, or simply helping patients feel comfortable in the chair, he strives to create an experience that blends skill with genuine care.

    Outside of the office, Dr. Cheyne enjoys spending time outdoors—whether hiking, exploring new trails, or simply enjoying the fresh air with family and friends.

Meet our team

Our dedicated Hamamoto Dentistry team of hygienists, dental assistants and admins are here to make your visits pleasant and comfortable

  • Margie

    Office Manager, RDA

    Margie - Office Manager - Hamamoto Dentistry
  • Sierra

    Patient Care Coordinator, RDA

    Hamamoto Sierra
  • Jessica

    Patient Care Coordinator

    Jessica - Hamamoto Dentistry
  • Brooklynn

    RDA

    Hamamoto Brooklyn
  • Ivy

    RDH

    Hamamoto Ivy