Harbour Place Dental

For that Perfect Winning Smile


Call us: (425) 493-8111

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About Us

Meet the Doctor and Our Team: Dentists in Mukilteo, WA

Kathryn T. Onishi, DDS

photo_12Dr. Onishi was born and raised in the Central Valley of California. She did her undergraduate studies at California State University, Fresno, where she received a Bachelor of Arts in Zoology in 1981. She attended dental school at the University of California, San Francisco, and graduated in 1985. Through the years, she has continued to find her career rewarding and enjoyable. The artistic aspect of dentistry and working with people is what drew her to the dental profession, and it continues to motivate her to learn new techniques and skills. She and her husband, Eugene, a native of Seattle, have three children who were brought up in the Mukilteo School District. Dr. Onishi enjoys spending time with her family, attending their sporting and music events, and traveling. She enjoys playing the piano, singing in her church choir, and going on mission trips with her church to provide dentistry to underserved communities in Central America.

Timothy C. Liu, DDS

Profile Picture of Dr Tim LiuDr. Liu is a lifelong Pacific Northwesterner. He was raised near Vancouver, WA, just right next to Portland. Dr. Liu moved to Seattle to attend college at Seattle Pacific University, where he earned a Bachelor of Science in Physiology in 2018. Afterwards, he stayed in Seattle and attended the University of Washington for dental school, graduating in 2024. Following graduation, Dr. Liu spent a year completing a residency program in Advanced Education in General Dentistry in Bremerton. He is excited to be joining Harbour Place Dental!

Outside of dentistry, Dr. Liu enjoys trying different restaurants, cooking new recipes, reading novels, and traveling around the world. One of his goals is to step foot in every continent!

Meet Our Dedicated Staff:

Gina- Dental Hygienist

photo_30Gina brings many years of dental hygiene experience to our office. Her passion for her profession, clinical expertise and positive attitude are great assets to our practice.

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Kathy Onishi

We are committed to helping you achieve a healthy and beautiful smile in an atmosphere of comfort and caring. Our patients' satisfaction is important to us. Read more here .

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HarbourPlDental
harbourpldental Dr. Kathy Onishi @harbourpldental ·
5 Jun

🦷 Friday Dental Tip of the Week ☀️

Don't forget your lips! Use SPF lip balm, wear a hat & protect your smile from sun damage this summer.

📞 (425) 493-8111
🌐 https://harbourplacedental.com/contact-us
#SunSafety #DentalTips #HarbourPlaceDental

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harbourpldental Dr. Kathy Onishi @harbourpldental ·
4 Jun

🦷 Dental Myth vs Fact

❌ Myth: If your gums bleed when you floss, stop flossing.
✅ Fact: Bleeding gums often signal inflammation from plaque buildup. Consistent flossing & brushing can help improve gum health.
📅 Book today:
https://HarbourPlaceDental.com/contact-us
#HealthyGums #DentalMyths

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harbourpldental Dr. Kathy Onishi @harbourpldental ·
3 Jun

💙 Wellness Wednesday 💙

Smile more today 😄

Healthy smiles start with daily brushing, flossing & regular checkups. Small habits make a big difference!

📞 (425) 493-8111
🌐 http://HarbourPlaceDental.com
#WellnessWednesday #HarbourPlaceDental #SmileMore #HealthySmiles

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harbourpldental Dr. Kathy Onishi @harbourpldental ·
2 Jun

🦷200 Years of Dental Innovation – Week 10

In 1895, Wilhelm Conrad Röntgen discovered X-rays, allowing dentists to detect hidden problems beneath the surface. A breakthrough that transformed diagnosis!

📞 (425) 493-8111
🌐 https://harbourplacedental.com/contact-us

#DentalHistory #DentalXRays

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Latest Blog Posts

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  • A Healthy Mouth for a Healthy Life: The Link Between Oral Health and Overall Wellness May 14, 2024

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Harbour Place Dental

Harbour Place Dental

8 hours 32 minutes ago

📢 Summer Smile Savings! 🌞 Harbour Place Dental is excited to welcome new patients with an exclusive summer offer! For a limited time, new patients

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Harbour Place Dental

Harbour Place Dental

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🦷 Friday Dental Tip of the Week ☀️ Protect Your Lips from the Sun, Too! 😎 When you think about sunscreen, you probably think about

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Services Hours

Monday 8:30 AM–4:30 PM
Tuesday 8:30 AM–4:30 PM
Wednesday 9 AM–6 PM
Thursday 8.30 AM–3 PM
Friday 8 AM–1 PM
Saturday Closed
Sunday Closed

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Top 10 Dentists in Mukilteo, WA
Voted one of 2015's best Mukilteo, WA practices in Dentistry
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