Meet our Renton dentists.

General Dentist

Dr. Donghyun Koo, DDS

Dr. Koo’s work spans everyday dental care and more involved restorative treatment, including crowns, bridges and dental implants. He also works with specialists when a patient’s care calls for a collaborative approach.

He earned his DDS at New York University College of Dentistry after studying mathematics at the University of Virginia. He continues to pursue advanced dental education, with interests across restorative dentistry, implant care and surgical extractions.

Dr. Koo founded Best Dentistry in Seattle in 2020 and later expanded to Epic Dental and Elevate Dental. At Epic, his focus is helping patients understand their options and plan care around their needs.

General Dentist

Dr. Avery Ruben, DMD

Dr. Ruben provides general dental care, dental implants and clear aligner treatment. He takes an individual approach to treatment planning, considering each patient’s needs and goals.

He earned his DMD at Nova Southeastern University in 2016 and received the Omicron Kappa Upsilon honor. Before dental school, he studied food science and human nutrition at the University of Florida.

Dr. Ruben continues his dental education to build on the techniques and knowledge he brings to patient care.

General Dentist

Dr. Eric Kim, DDS

A Pacific Northwest native, Dr. Kim brings a warm, patient-focused approach to dental care. He values helping patients feel comfortable and understand the care being recommended.

He studied general biology at the University of Washington and earned his DDS at Loma Linda University School of Dentistry. He continues to build his knowledge through ongoing dental education.

Your first visit starts with a conversation.

Tell us what brings you in—even if it has been a while. We’ll help you understand your oral health and the next steps.

Tell us what matters

Share your concerns, dental history and anything that would help you feel more comfortable.

Understand your options

Your dentist reviews the exam and any needed X-rays with you, then explains what needs attention and why.

Plan your next step

Review treatment recommendations, your estimate and insurance questions before deciding how to proceed.