Dr. Gillian Lim

Dr. Gillian Lim - Your Skilled and Compassionate Dentist in Mercer Island

Dr. Gillian Lim was born in Federal Way and raised in Manila, Philippines. She returned back to the Pacific Northwest to attend the University of Washington, where she earned both her undergraduate degree and Doctorate in Dental Surgery. She is proud to have built deep roots here in Washington and to serve the community she now calls home.Patients describe Dr. Lim as gentle, attentive, and genuinely caring. She is passionate about providing high-quality dentistry with a personal touch and believes in creating lasting relationships built on trust and comfort. Her goal is to make every visit a positive and reassuring experience, while promoting lifelong oral health in a safe and welcoming environment.Dr. Lim is an active member of the American Dental Association, Seattle King County Dental Society, and Washington State Dental Association.Outside the office, Dr. Lim enjoys cooking and exploring new cuisines, traveling with her family, and spending time with her husband, twin daughters, and their sweet mini Australian Shepherd, Maple.

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Thomas Dentistry accepts all major forms of dental insurance and offers an optional dental membership program to help pickup where dental insurance leaves off or for patients who lack dental insurance all together. Our dental membership program is far superior in cost and benefit than most forms of dental insurance!

Education & Achievement

Dr. Lightner holds a Doctorate in Dental Surgery and she is an active member of the American Dental Association.

What our Patients are saying.

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Read our reviews from all Patients.

David Hughes

Happy Client from Mercer Island Office

“Dr Thomas’ work has always been top notch for me and my family. The staff is genuine, friendly and easy to work with. Not changing dentist ever!”

Lukas Rogers

Happy Client from Kirkland Office

“Dr. Thomas and his team have managed my dental care for over a decade and I couldn't be happier with how I've been treated. Highly recommend coming in to see him for anyone in need of dental care.”

Nelson Lopez

Happy Client from Mercer Island Office

“Very very exceptional service, from making the appointment all the way to check out.”

Faith Hutcherson

Happy Client from Kirkland Office

“Really enjoyed my experience here for a teeth whitening. The Kirkland location is great; it’s close to the freeway so it’s easy to find, and there was designated parking for patients. The staff (I’m talking from front desk to assistants to the doctor) were all very friendly and extremely efficient. I was talked through what they were doing so I felt at ease the entire time.”

Christy Shiers

Happy Client from Mercer Island Office

“Dr. Thomas is professional and knowledgeable. He is well suited for both kids and adults.”

G Brook (Summit Seeker)

Happy Client from Mercer Island Office

“Professional, friendly and patient centered care. My first visit and I am thoroughly impressed. Great office culture and staff love what they do and it shows. Thank you.”

Ronald Folse

Happy Client from Kirkland Office

“I’vy been a patient with Dr Troy for fifteen years and have always been impressed with him and his entire staff. I am 86 years old and was hesitant to make my visit, but his whole staff used the best practices to insure the safety in the office. Unfortunately , I will be moving to California ima month or so and will have to find a new dentist , and hope that they will be as good as Dr Thomas and his staff.”

Bill Sharpe

Happy Client from Mercer Island Office

“Thankful to have a dental team I can trust. Especially in 2021 Thanks all, Bill”

Jovany Lopez

Happy Client from Kirkland Office

“Highly recommended. Everyone is so friendly and it was a great experience. Great nurses and Dentist.”

Janelle Denson

Happy Client from Mercer Island Office

“I love coming here & I’m always greeted with smiles. It truly makes me feel great that the staff remembers my name & even though I visit every six months for my cleanings, our conversations pick up right where we left off. Marna, Rosie & Dr. Thomas are THEE BEST! I’d leave ten stars if I could.”

Zach Kelly

Happy Client from Kirkland Office

“First visit back to the dentist in awhile after not having insurance. Everyone was very welcoming and informed. Cleaning was very efficient and information was communicated clearly Thank you Dr. Zou, Kathy, Carmen, and Nicole! I'll definitely be coming back for further dental care.”

jules rasar

Happy Client from Kirkland Office

“I've looked for a dentist in the Seattle area for eight years. I'll never go anywhere else. The last year with Dr Thomas has been great. His staff is just as great. Very solid work.”

Ankita Joshi

Happy Client from Kirkland Office

“Dr. Thomas is great. Very friendly and takes time to address your concerns. The staff is very helpful as well.”

Frahnz Dendy

Happy Client from Kirkland Office

“Just a cleaning today. Megan was very good, a professional who is very capable at what she does. Pleasure visiting this dental office.”

Tyler D

Happy Client from Mercer Island Office

“I just started going here this year after bouncing around different dentist for years and have had a great experience each visit. I have had everything from cleaning, fillings, root canal, crown and they have all gone well. The office is nice, conveniently located and has off street parking. The entire staff is very friendly and helpful. Dr. Jaswal is excellent, takes his time not only with his work but explaining what you have going on, your options etc. Overall only good things to say about this place and definitely recommend it.”

Richard Fryant

Happy Client from Kirkland Office

“Best dentistry I've ever been to. The people here are thoughtful and very professional. The work I've had done has been very high quality.”

Nelda Pettit

Happy Client from Mercer Island Office

“I have been a patient of Dr. Thomas since he began his practice. He is thorough in his exams, and professional in his treatments. He has done root canals, implants, and crowns for me, and the results have always been very good.”

Patrick Dion

Happy Client from Kirkland Office

“Best dentist I’ve ever been to. Not only are they prompt and quick but they walk you through your care clearly and explain the how’s and why’s. For once if feels like having an office that has a comprehensive plan for me rather than me checking a box every year. The hygienists are empowered to spend time with you and even book appointments with them right in the chair. Could not recommend more.”

Betsy Tutland

Happy Client from Mercer Island Office

“Dr. Thomas is an amazing dentist. At both his Mercer Island and Kirkland offices the staff is very warm and welcoming. Dr. Thomas has been my husband’s and my dentist for over 20 years and has done exceptional dental work. He makes his patients feel at ease with his caring, positive and fun personality. My grandchildren also see Dr. Thomas and he has an amazing way of helping them to feel comfortable and thus, cooperative. Dr. Thomas has the highest medical and ethical standards. I highly recommend seeing Dr. Thomas for any dental procedure.”

Robb Kristianson

Happy Client from Kirkland Office

“Very happy with the prompt service. I would highly recommend Thomas Dentistry!”

Dental Care Services offered by Dr. Gillian Lim

Dr. Lim offers a wide array of dental services to meet the diverse needs of her Kirkland patients. Her expertise extends from basic preventive care, such as cleanings and check-ups, to more specialized treatments like surgical extractions. Dr. Lim is also skilled in endodontic procedures, including root canal treatments. Her comprehensive approach ensures that whether you need routine care or more complex treatments, you’re in capable hands.

General Family Dentistry

At Thomas Dentistry, our dentists and our team of dental professionals are focused on you. We apply the latest dental technology to general and family dentistry in Kirkland and Mercer Island, Washington, to repair or enhance your smile to help you enjoy good dental and general health.

General Family Dentistry

Cosmetic Dentistry

At Thomas Dentistry, we are committed to providing high-quality dental care to our patients. A big part of this commitment is our restorative procedures that heal and preserve the function of the teeth, but we are also concerned with the cosmetic side of things.

Cosmetic Dentistry

Root Canal Treatments

When decay or physical trauma damages a tooth in such a way that it compromises the pulp of the tooth, one way that our dentists can suggest to save your tooth is through a root canal treatment. Root canal treatment has a reputation for being a painful treatment.

Root Canal Treatments

Restorative Dentistry

We are pleased to offer high-quality restorative dentistry at our practice. Restorative dentistry is a specific branch of dentistry that is focused on restoring the health and function of your smile following tooth damage, tooth decay or tooth loss.

Restorative Dentistry

Invisalign®

re you seeking a discreet and effective solution to perfect your smile? At Thomas Dentistry, we understand the need for a convenient and hassle-free orthodontic option. That’s why we’re proud to offer Invisalign® and Reveal clear aligners across all our locations in Kirkland, Mercer Island, and the University District in Seattle.

Invisalign®

Dental Implants

Dental implants are permanent solutions to lost teeth. Implants are made of two parts: the implant itself, a titanium screw that acts like the root of the tooth, and the abutment crown, that attaches to the implant portion itself.

Dental Implants