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Thomas Dentistry is conveniently located downtown Mercer Island right across from Bank of America. Dr. Troy Thomas opened Thomas Dentistry on Mercer Island in 2007 and lives with his family on Mercer Island.
We offer a full range of services at our Mercer Island dentist office, including routine dental checkups, cleanings, and many other procedures to keep you and your family in tip-top dental health.
We treat patients of all ages, young children, teenagers and adults. We offer family appointments and extended appointment hours throughout the week to make scheduling an appointment easy and convenient for you. We know you’re busy and constantly on the run, so our goal is to make fitting in a trip to your Mercer Island dentist as easy and convenient as possible.
Dr. Troy Thomas, Dr. Gurman Jaswal, and Dr. Ken McNabb are here to help – whether you’re looking to achieve a new smile or have dental pain and need help, we are here for you on Mercer Island serving our community.
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!

Dr. Troy Thomas
General Dentist
Dr. Jessie Zou
General Dentist
Dr. Chris Clark
General Dentist
Dr. Ken McNabb
General Dentist
Dr. Ken McNabb
General DentistRead More Reviews
Read our reviews from all Patients.
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.”
Jovany Lopez
Happy Client from Kirkland Office
“Highly recommended. Everyone is so friendly and it was a great experience. Great nurses and Dentist.”
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.”
Bill Sharpe
Happy Client from Mercer Island Office
“Thankful to have a dental team I can trust. Especially in 2021 Thanks all, Bill”
Henry Pang
Happy Client from Mercer Island Office
“The services are great and very professional.”
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?!!”
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!”
Alejandro
Happy Client from Mercer Island Office
“I can't recommend this practice enough. Everyone who works here is courteous, professional and extremely competent. 10/10”
Matt Wang
Happy Client from Mercer Island Office
“Dr. Jaswal is an absolute pleasure to work with!”
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.”
D Enright
Happy Client from Kirkland Office
“Wonderful, welcoming staff always leaves me smiling!”
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.”
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.”
jason Kummerfeldt
Happy Client from Kirkland Office
“Tracie Was fantastic! Thank you”
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.”
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.”
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!”
Susan Slagle
Happy Client from Kirkland Office
“I just recently transferred over to Thomas Dentistry and I’ve had two appointments so far, which I have had positive experiences with. The front desk is very friendly and accommodating, and they let you know about costs up front. I’ve had two different hygienists and they both have been good and thorough. I saw Dr. Jaswal both times and he has a very calm demeanor which puts you at ease. He also has a good sense of humor. Thomas Dentistry takes the unpleasantness out of going to the 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.”
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!”
We believe that dental care should be a collaborative process. Our team takes the time to understand your needs and concerns, ensuring that you’re an active participant in your own dental health. We offer flexible scheduling and transparent pricing, making your experience as convenient as possible.
When it comes to dental care, you deserve nothing but the best. At Thomas Dentistry, we combine state-of-the-art technology with a compassionate approach. Our team is committed to providing personalized care that meets your unique needs.
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