• About Us

  • Sang W. Yum, DMD

    Redmond Dentist Dr. YumDr. Yum knows that your smile is an important part of your overall image, and he works hard to keep you looking and feeling your best. His experience and expertise in dental care is what sets him apart from the rest of the field. Dr. Yum also knows that proper dental care begins and ends with the patient, and his goal is to deliver to you a complete dental program that ensures long term dental health, especially keeping that great smile of yours.

    • University of Louisville
    • Columbia University, New York, General Residency
    • Columbia University, New York, Implant Training


    • U.S. Army – Served 10 years as a dentist


    • Astra Implant Certificate
    • Lumineer Certified Dentist
    • Noble Biocare Implant Certificate
    • Osstem Implant Certificate


    • Washington State Dental Association
    • American Dental Association


  • Kim Grewell

    Dental Assistant

    I have enjoyed working with Dr. Yum and his excellent staff for the past five years in providing our wonderful patients with quality care. I have been a dental assistant for 30 years and enjoy the challenges and joys of my profession!

  • Lisa Skiles

    Insurance Coordinator

    I am the Insurance Coordinator and front office admin. I have loved helping patients understand their insurance benefits and empowering them with the knowledge they need to reach optimal dental health for over 25 years! Dental insurance plans are always changing and I am here to help map the way to the most efficient use of your benefits. I can be reached by phone or email. Please feel free to visit my desk at your next appointment.

  • Peggy Kirk

    Dental Hygienist

    I have had the opportunity of practicing dental hygiene in many settings and several states over the years since graduating from Shoreline Dental Hygiene program. Among the states I’ve practiced are California, Colorado, and Illinois before coming home to the Northwest. The last several years have been here in this office, which has allowed me to get to know many patients from diverse backgrounds and countries on a personal level. This has made my career very rewarding as I treat patients and make new friends.

  • Florence Hsu Verburg

    Dental Hygienist

    Florence Hsu Verburg BS, RDH, I grew up in the Central Valley of California with my parents that are originally from Shanghai, China. I graduated from Cal State Bakersfield with a degree in Biology. I went to dental hygiene school at UC San Francisco, which is the Cal Berkeley Medical, Dental and Pharmacy school. I moved to San Diego for 5 years and then to St. Louis for 2 years. I have been living in the Seattle area since 1992. My hobbies include skiing, reading, cooking, hiking and wine. I have two daughters and a Silver Tabby named Nellie.

  • Rachel Kenworthy

    Dental Assistant

    I joined Dr. Yum’s practice in 2010 as a registered dental assistant bringing 9 years of experience to the team. I assist Dr. Yum with preventative (children prophy’s), restorative and surgical procedures. Dental assistants are an integral part of a dental office and I love my profession because I genuinely enjoy spending time with our patients and educating them for optimal dental health! I welcome you to our practice and look forward to working together!