Meet the Team

At 8 to 8 Dental, our friendly team strives to create a comfortable environment. Our primary concern is making sure we take care of all your dental needs. 8 to 8’s team of experts will talk you through every step of your dental visit so you feel relaxed and confident along the way. Our doctors continually train our staff members to ensure that you have the best experience here at 8 to 8 Dental. We are constantly improving the way things are done in our office based upon your feedback.


Our Doctors

We have talented and down-to-earth doctors who collectively have extensive experience in dentistry. They would love the opportunity to introduce themselves to you and to welcome you into our 8 to 8 Dental family.

dr+thongin.jpeg

Dr. Ekapoj Thongin

Dr. Thongin grew up on the East Coast and went to Temple University School of Dentistry in Philadelphia, graduating with honors in Oral Surgery, Periodontology, and Endodontics. Dr. Thongin completed his residency at the University of Washington and has accrued over 1000 hours of continuing education courses throughout his years in practice. He is known for his compassionate manner and extensive knowledge of the latest techniques in dentistry. Dr. Thongin offers the highest level of comfort and has a great way of explaining your treatment plans.

Dr. Rebecca Liu

Dr. Rebecca Liu grew up in Bellevue, Washington. She earned her Bachelor of Science degree in Biochemistry and Biology from the University of Washington and continued her education at the UW School of Dentistry where she received her Doctor of Dental Surgery Degree. After graduation, Dr. Liu was commissioned as a Captain in the United States Army for 5 years. She completed a residency in Advanced Education in General Dentistry where she received training with an emphasis in oral surgery, periodontics, CAD/CAM prosthodontics and Endodontics. She has worked closely with dental specialists at several military dental clinics in Texas, Georgia, Arizona and Washington. Dr. Liu is a current member of the Washington State Dental Association, Washington Academy of General Dentistry and Seattle King County Dental Society. In her free time, Dr. Liu enjoys volunteering, tennis, and spending time with her family. 

Dr. Naruthorn Tanaiutchawoot

Dr. Naruthorn Tanaiutchawoot was born and raised in Bangkok, Thailand. Because of her long first and last name, she would like everyone to call her as “Dr. Naru”. Dr Naru is an Orofacial pain and Temporomandibular disorder board-certified specialist. She received her Master of Dental Science in Orofacial Pain and TMD from Rutgers School of Dental Medicine, Newark, New Jersey. She is a member of American Dental Association and a member of American Academy of Orofacial Pain. Dr. Naru is capable of helping patients with not only muscle pain, TMJ pain, but also patients with sleep apnea. Her methods of treatment include, but not limit to, medication, oral appliances, and BOTOX injection. Dr. Naru continued her education beyond her specialty and got certified to be an Invisalign provider. With 10 years of experience in dentistry, Dr. Naru believes that patient’s opinion toward treatment plan is the key to a successful treatment. In her free time, Dr. Naru enjoys traveling and playing board game with her friends . 

Dr. Amy Cao

Dr. Amy Cao was born in China, and grew up in Toronto, Canada. She earned her Bachelor's degree from the University of Toronto, double majored in Cell Biology and Pharmacology. She received her Doctor of Dental Surgery (DDS) degree at New York University, College of Dentistry. After graduation, she completed a year of general practice residency at the Mount Sinai Hospital in NYC, where she treated patients of varies degrees of medical complexity, including oral cancer and trauma patients. She moved to the beautiful pacific northwest after living in NYC for 5 years. To her, being able to help the patients restoring their smiles is the most rewarding feeling in the world. With gentle hands, Dr. Cao is passionate with providing dental care to patients of all ages. She enjoys explaining the reasons behind each procedure with patients, because she believes achieving stable and healthy smiles requires “team” effort. Dr. Cao is an active member of the American dental association, Washington state dental association, Seattle-King County Dental Society, and Washington Academy of General Dentistry. In her spare time, she loves traveling, hiking, and acrylic painting.

Dr. Siamak Najafi

Dr. Siamak Najafi is a prosthodontist graduated from New York University. He and his wife moved to Seattle from New York recently. Prior to his move, Dr. Najafi was a clinical assistant professor in the Dept. of prosthodontics and the program director of the Advanced Program for Int’l Dentists in Comprehensive Dentistry at NYU College of Dentistry, while providing patient care at the NYU dental faculty practice in Manhattan, NY. He earned his DDS degree from Shahid Beheshti University of Medical Sciences (SBMU - Ex. National University) in Tehran, Iran in 2008. He was in private practice for 3 years when he decided to continue his education in the United States. Reconstructing teeth to restore patient’s esthetic and function has always been his passion as a dentist and prosthodontist. Dr. Najafi’s area of expertise are full-arch and full-mouth rehabilitations, implant surgery, smile makeovers, complete and partial Snap-on dentures, and “Teeth in a Day” concept. He has been involved in multiple research activities and has co-authored articles in dental journals on various topics in Prosthodontics.

Dr. Francisco Frixione

Dr. Francisco Frixione was born and raised in Nicaragua, and is an accomplished general dentist committed to providing exceptional dental care with a warm and inviting approach. He is bilingual and works with patients in English & Spanish. Dr. Frixione received his Doctor of Dental Surgery degree at Universidad Americana in Managua, Nicaragua. After graduation, he worked in private practice, as well as volunteered with several non-profit organizations including Operation Smile, providing dental care to underserved adults and children. Following this, he completed a 2-year residency in Advanced Education in General Dentistry at the University of Connecticut. He is dedicated to staying current with the latest advancements in dental technology and techniques through continuous education, and is passionate about implant dentistry and oral rehabilitation. Dr. Frixione firmly believes in the importance of putting patients first. He prioritizes patients’ unique dental needs and concerns. He takes the time to listen, answer questions, and collaborates with patients to create personalized treatment plans that are adapted to their individual preferences and goals. For those seeking a skilled and compassionate general dentist, Dr. Frixione is a step toward a healthier, more radiant smile. During his free time he loves biking, reading, hiking and exploring new restaurants and coffee shops with his wife and corgi.


Our team looks forward to seeing you!