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Dr. Gina Lightner, DMD, comes to Washington state from Boston, Massachusetts, and brings her extensive post-doctoral training, private practice experience, and positive enthusiasm to her service of the patients of Thomas Dentistry- Mercer Island!
Dr. Lightner completed her undergraduate studies at Rice University, where she earned a B.A. in Kinesiology with a concentration in Sports Medicine and a B.A. in Philosophy, before going on to earn her DMD Doctorate of Medicine in Dentistry from the Tufts University School of Dental Medicine in Boston, MA. During her time at Tufts Dental, Dr. Lightner was not only recognized on the Dean’s list for her academic achievements, but also inducted into the Honus Civicus Society for her exceptional commitment to and action in community service and civic engagement.
Dr. Lightner went on to complete a residency at the prestigious Mount Sinai Hospital in Manhattan, New York City, where she served as first-call for the Mount Sinai Emergency Department on the Upper East Side as an on-call member of the Oral and Maxillofacial Surgery team, responding to extensive dental emergencies ranging from infections to complex facial trauma. There, she also received advanced training in digital dentistry, aesthetic dentistry, Invisalign orthodontics, and implant dentistry in various private, community, and hospital clinics across New York City, while completing rotations in anesthesiology, pediatric dentistry, and medically advanced dentistry, alongside her medical and surgical colleagues.
Dr.Lightner then began her career in private practice in downtown Boston, where she served working professionals, families, and long-time residents of Boston and Cambridge as a general and cosmetic dentist for years. During this time, she has continued to expand upon her knowledge and skillset through post-doctoral training through esteemed institutions such as the American Academy of Facial Esthetics, the Academy of General Dentistry, and the American Dental Association.
Dr. Lightner is beyond excited for the opportunity to provide exceptional, comprehensive, and customized dental care to all her patients in the warm and comfortable environment of Thomas Dentistry- Mercer Island. Her favorite part of dentistry is getting to know her patients and being a part of her patients’ lives, and she is excited to meet you!
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. Lightner holds a Dental Degree (DMD) and has completed a residency at the prestigious Mount Sinai Hospital in Manhattan.
Read More Reviews
Read our reviews from all Patients.
Marna Reams
Happy Client from Kirkland Office“Cathy did an amazing job cleaning my teeth! She was informative on what is going on in my mouth! Looking forward to my next cleaning!”
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!”
sebastian gillbanks
Happy Client from Kirkland Office“Very friendly staff and quality services”
Sarah Gielgens
Happy Client from Kirkland Office“I have been a patient at Thomas dentistry for over 10 years and have always appreciated their open and friendly atmosphere, knowledgeable and helpful advice, use of new technology and methods, consistent and kind care. Dr. Thomas, Dr. Nguyen, and Dr. Jaswal have all demonstrated genuine care and interest in their patient’s lives, dental health and history, and other medical concerns. I admire their dedication to providing excellent solutions to dental problems, and patience with special issues. I would recommend this team to everyone!”
Dan Nordale
Happy Client from Mercer Island Office“Thomas Dentistry makes going to the dentist something to look forward to.”
Matt Wang
Happy Client from Mercer Island Office“Dr. Jaswal is an absolute pleasure to work with!”
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.”
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.”
D Enright
Happy Client from Kirkland Office“Wonderful, welcoming staff always leaves me smiling!”
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.”
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.”
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.”
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”
B B
Happy Client from Mercer Island Office“The best place!!! Great dentists!!! HIGHLY RECOMMENDED!!!”
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.”
Mark Detrow
Happy Client from Mercer Island Office“Had such an amazing experience, and I would highly recommend coming here. I was incredibly thankful especially for how helpful and sweet Marna was. I typically do not like going to the dentist but she made me feel very comfortable and did a wonderful job! Will be back here soon!”
Milo
Happy Client from Kirkland Office“Great dentist! I came after Covid for my first checkup and cleaning, and ended up needing to have some childhood crowns replaced. During the process they were very thorough, even once getting a crown remade to have a perfect fit. One of those visits came in under the estimate. I appreciate the care they take in their practice. The staff are always nice and fun to talk to. Since my first series I’ve come here for over a year and have always had great experiences. Still need to floss more but the dentists and assistants are super nice about it! Also have great reminder system, and are very patient and thorough when working on insurance issues.”
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!!!”
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.”
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.”
Dr. Lightner 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. Lightner 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.
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