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.

Doug Hartsock

Happy Client from Kirkland Office

“Forget those annual “Best of” awards; this is the best dental practice in Kirkland.”

Dan Nordale

Happy Client from Mercer Island Office

“Thomas Dentistry makes going to the dentist something to look forward to.”

Sue Dwyer

Happy Client from Kirkland Office

“Great experience with hygienist today. Thank you for being so kind and not judgemental. Looking forward to a long relationship with this dental office.”

Nicholas Smith

Happy Client from Kirkland Office

“Clean, friendly, and on time. Their staff took very good care of my teeth and were always very pleasant. Definitely recommend Thomas Dentistry!”

Holly Yee

Happy Client from Kirkland Office

“Such a wonderful dentist's office! The staff is always welcoming, efficient, and they do a great job with my oral care. The other day I had a tooth brush bristle stuck in between two of my teeth and needed to come in for a minute visit. They got me in that day and were able to remove the bristle. It was such a relief! Going to the dentist can somethings be uncomfortable, but at Thomas Dentistry I always feel taken care of.”

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.”

B B

Happy Client from Mercer Island Office

“The best place!!! Great dentists!!! HIGHLY RECOMMENDED!!!”

Brookstorm Honorblade

Happy Client from Mercer Island Office

“Friendly, comforting, professional, and painless. ;)”

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.”

Bill Sharpe

Happy Client from Mercer Island Office

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

TJ Burke

Happy Client from Mercer Island Office

“Love the care, personnel and extra special treatment I receive with every visit. Best dentist I have ever had!”

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.”

Audra Saisslin

Happy Client from Mercer Island Office

“LOVE LOVE LOVE Doctor Thomas! Funny guy who always makes me feel relaxed and comfortable. Rosie is an excellent Dental hygienist! Love the whole staff and truly enjoy going to the dentist now. 11/10 would recommend.”

Elaina Sh

Happy Client from Kirkland Office

“Went to that office last year to get a crown on implant and Dr. Thomas did the ugliest crown possible. Shape and height looked completely different from natural tooth I had in that place before. He did not even try to fix it. This year my new dentist confirmed that the crown should have been done completely different but now Im stuck with this crown for a while because it will cost a ton to re-do it since that is a dental implant crown, not just a regular crown. I guess I missed the first red flag when they said they do root canals and extractions too. Of course, why even going to roots canals specialists and oral surgeons if You can get a “buffet of services” at Dr. Thomas! Also Molly at the front desk is the rudest receptionist I ve even seen, billing office could not get the numbers right and overcharged me for about $800 then refunded but can this office be more unprofessional and thirsty for money?!!”

Jacqueline Roer

Happy Client from Mercer Island Office

“Five stars! Great Dentist and work he does and great staff.”

Mary Berry

Happy Client from Kirkland Office

“Very incompetent doctor dr. Thomas is after money. Don't believe anything he is saying. Other doctors are all recent college graduates with no experience. Don't trust them. Get a second opinion or just go some place else get your teeth done.”

Nelson Lopez

Happy Client from Mercer Island Office

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

Ernest Heassler

Happy Client from Kirkland Office

“Friendly, professional high quality dentistry. I made this observation two years ago and it is still valid. I can't imagine going elsewhere for dental care.”

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!”

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