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.

Read More Reviews

Read our reviews from all Patients.

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.”

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.”

E. Victoria Simone

Happy Client from Mercer Island Office

“I truly love my dentist and the wonderful staff. I’ve been a patient for almost six years and my visits have all been a good experience. I feel confident and well cared for. Everyone is friendly and very professional. 100% Thank you all!”

Vanessa Hoffman

Happy Client from Kirkland Office

“This was my first dental visit and I must say they were definitely unorganized as their X-ray machine kept freezing the images delaying my appointment and they’re not put together. The manager Carmen told me I was going to have to pay a $70 balance. Which I completely agreed on no problem. I got a bill for $140 and was never told I had a $50 co-pay on top & they don’t use silver filling so I had to pay extra for a white filling. I was not told about any of these extra charges. The manager Carmen hung up on me over the phone without trying to fully explain everything and was very rude to me. I would not recommend this dentist because they are not truthful and they want you to pay double your bill so please be careful.”

sebastian gillbanks

Happy Client from Kirkland Office

“Very friendly staff and quality services”

jason Kummerfeldt

Happy Client from Kirkland Office

“Tracie Was fantastic! Thank you”

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.”

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.”

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!”

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.”

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.”

Chelsey Swan

Happy Client from Kirkland Office

“I love Thomas Dentistry! Tracie is my usual hygienist. It might be strange to say, but I enjoy my teeth cleanings here. They are so easy and, as far as dental work goes, as comfortable as they can be.”

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!”

Peter Christian

Happy Client from Mercer Island Office

“I did not have a dentist in the Seattle area and choose Thomas Dentistry because they were close and nearby. Boy, did I strike gold! I hadn't been to the dentist in a while and I needed some work done to get clearance for a other medical procedure. They were so great in getting me set up and expediting my treatments. Everyone was very professional and friendly. I can highly recommend them for your dental work.”

B B

Happy Client from Mercer Island Office

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

Barb Patterson

Happy Client from Mercer Island Office

“I needed a dentist close to home and they are close enough for me to walk. I've been twice now and both times had a great experience. Dr. Jaswal has a wonderful chair-side manner and super sense of humor.”

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.”

Madeleine Dow

Happy Client from Mercer Island Office

“Dr. Nguyen and the dental hygienists are super nice! I felt comfortable and safe—even the time I started crying when I had a panic attack before getting some cavities filled. (Sorry about that lol.) Anyways, Dr. Nguyen was very kind, gave me space to chill out, and didn’t make me feel embarrassed, even though I wouldn’t have blamed him if he did.”

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.”

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