About the Doctors

  • Dr.
    Grace ying Guo, DMD, MSD, PhD

    Dr. Guo was originally from China. She graduated from Dental School of West China University of Medical Sciences (WCUMS) with degrees of DMD (Doctor of Medical Dentistry) in 1984, MSD (Master of Science in Dentistry) in 1987, and PhD in 1991. She was a faculty in WCUMS Dental School, lecturing as well as researching and practicing dentistry.

    Dr. Guo came to Seattle in 1994. She entered University of Washington School of Dentistry in 1998, and graduated with certificate of Oral Medicine in 2000. She practiced general dentistry in Everett for over seven years before acquiring the current dental practice. Since graduation, Dr. Guo has also committed in volunteering in Northwest Medical Teams dental mobile van to help those underprivileged in Great Seattle area, and being an affiliated faculty of UW Dental School teaching for several years.

    Dr. Guo is married. She and her husband of 30 years are living in Shoreline with their two children. They speak both English and Chinese. They like singing, playing music, reading, sports and traveling, and meeting new friends with varied cultural background. They have been involved in local community services and would like to dedicate more; they feel very blessed to be able to pay back.

    Dr. Guo believes that everyone is born equal; every life is precious; every person deserves respect; and every body should be treasured and cared well. She also believes that everyone is different and unique, that behind every tooth there is a person. As a modern dentist, Dr. Guo also believes that the health of teeth and mouth is closely related with one's general health; that a healthier mouth will give you a more confident smile and a higher quality of life.

    Dr. Guo can be reached at (206)367-4281, or email at [email protected].

  • Dr.
    Xiaorui Zhu BDS, MPH, DMD

    Dr. Xiaorui Zhu BDS, MPH, DMD Dr. Xiaorui Zhu was born and grew up in Tianjin, China. She received her BDS from Sun Yat-sen University, China. Upon graduation, Dr. Zhu continued to pursue her passion in human services and healthcare by earning MPH from Yale University and DMD from Boston University Henry M. Goldman School of Dental Medicine with high honor. Dr. Zhu dedicates herself to provide exceptional care tailored towards every patient, is committed to lifelong training to provide best dental solutions and improve patient care. 

    Dr. Zhu always devotes her time to get to know her patients and treats every patient as if they were family. Dr. Zhu moved to Seattle area with her husband and joined Grace Dental in 2021, she is an current member of American Dental Association, Washington State Dental Association, and Seattle King County Dental Society. 

    Dr. Zhu is fluent in both English and Mandarin. In her free time, Dr. Zhu enjoys spending time with her husband on traveling, eager to enjoy the great outdoors in the Pacific Northwest.

  • Dr.
    Aidi Niu, DMD

    Dr. Niu received her Doctor of Dental Medicine (DMD) degrees from both Sichuan University West China School of Stomatology and Boston University Henry M. Goldman School of Dental Medicine. She strives to maintain and uphold the highest level of excellence in her work, and is committed to empowering and educating patients while focusing on patient comfort during dental appointments.

    Dr. Niu is a lifetime member of United States Dental Institute, which is an extensive continuing education program that is focused on excellence in orthodontics.

    In 2021, Dr. Niu relocated to Washington state where she now lives with her husband and son. When she is not practicing dentistry, Dr. Niu enjoys reading and snowboarding.

Grace Dental is located in Shoreline:

18532 Firlands Way North, Suite B, Shoreline, WA 98133 | Get Directions


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Our Regular Schedule

Primary Location


9:00 am-5:00 pm


9:00 am-5:00 pm




9:00 am-5:00 pm


9:00 am-5:00 pm


by appointment only