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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. Gillian Lim
General DentistRead More Reviews
Read our reviews from all Patients.
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.”
Megan Cosgrove
Happy Client from Mercer Island Office
“This is the best dentistry in the PNW! Molly at the front desk is so kind and always makes me feel like one of their VIP clients. The dental hygienists are all kind and Doctor Thomas is a straight shooter. Both myself and my Mom visit this office and couldn’t recommend it more!”
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”
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.”
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.”
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.”
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.”
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.”
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!”
kirk packard
Happy Client from Kirkland Office
“I have had a ton of dentistry done and have been to alot of dentists. These folks have it together. Just had a molder crown replaced. Quick ,completely painless and my bite is perfect 1st try. Absolutely no adjusting and then they repaired a front tooth I had broken after quickly epoxy in molder. This was the 2nd appointment to install crown and I was only in the chair 20 min. Went like clockwork and looks awsum. Thanku. Only thing better would be free haha!”
B B
Happy Client from Mercer Island Office
“The best place!!! Great dentists!!! HIGHLY RECOMMENDED!!!”
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!”
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.”
Epic Heart Healing
Happy Client from Mercer Island Office
“As always Dr. McNabb did not fail to impress! We are very fortunate to have him as our dentist . But I also wanted to lift up NADIA who cleaned my teeth this time around and did such an AMAZING job. She is really good at what she does, and has such a calming and personable way about her. Highly recommend these guys!!!”
Brookstorm Honorblade
Happy Client from Mercer Island Office
“Friendly, comforting, professional, and painless. ;)”
Christy Shiers
Happy Client from Mercer Island Office
“Dr. Thomas is professional and knowledgeable. He is well suited for both kids and adults.”
Theresa Gehrig
Happy Client from Mercer Island Office
“I have plenty of anxieties about getting dental work done and Dr Thomas and his team are understanding and reassuring. His office is so helpful and professional in getting the work done and I have a great deal of confidence in him and his team. Their equipment and materials are up to date. I’m grateful !”
Bill Sharpe
Happy Client from Mercer Island Office
“Thankful to have a dental team I can trust. Especially in 2021 Thanks all, Bill”
Dan Nordale
Happy Client from Mercer Island Office
“Thomas Dentistry makes going to the dentist something to look forward to.”
Linda Scott
Happy Client from Kirkland Office
“I visited Thomas Dentistry as a new patient on 9/9/21 and was impressed with their friendliness and professionalism. While there, multiple staff joined in to help resolve a personal issue, for which I was very appreciative. My husband and I will definitely schedule again with Thomas Dentistry Kirkland, and I’ll recommend them to family and friends.”
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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