Dr. Gina Lightner

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. Gina Lightner - Your Skilled and Compassionate Dentist in 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!

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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 Dental Degree (DMD) and has completed a residency at the prestigious Mount Sinai Hospital in Manhattan.

Dental Degree (DMD) from Tufts University School of Dental Medicine
Undergraduate studies completed at Rice University
Currently working on Mastership through the Academy of General Dentistry
American Academy of Facial Esthetics, the Academy of General Dentistry, and the American Dental Association.

What our Patients are saying.

Read More Reviews

Read our reviews from all Patients.

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!!!”

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.”

Jovany Lopez

Happy Client from Kirkland Office

“Highly recommended. Everyone is so friendly and it was a great experience. Great nurses and Dentist.”

Christy Shiers

Happy Client from Mercer Island Office

“Dr. Thomas is professional and knowledgeable. He is well suited for both kids and adults.”

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!”

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.”

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!”

Edward Estrada

Happy Client from Mercer Island Office

“Efficient and kind staff! I went through a period of dental anxiety and my transition to this office was smooth and uneventful. They have decent hours, good parking, a great playlist, and refer to good endodontists. What’s not to love? ❤️”

Bill Sharpe

Happy Client from Mercer Island Office

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

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.”

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.”

William Kit

Happy Client from Kirkland Office

“Friendly, Highly Skilled and the Staff explain every detail of procedures needing to be done including Billing Pricing. I Highly recommend Thomas Dentistry!!”

D Enright

Happy Client from Kirkland Office

“Wonderful, welcoming staff always leaves me smiling!”

B B

Happy Client from Mercer Island Office

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

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.”

Doug Hartsock

Happy Client from Kirkland Office

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

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.”

Ruth Combs

Happy Client from Kirkland Office

“Excellent dental services! Very caring and professional. Very attentive to my dental needs and concerns.❤️”

Robb Kristianson

Happy Client from Kirkland Office

“Very happy with the prompt service. I would highly recommend Thomas Dentistry!”

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.”

Dental Care Services offered by Dr. Gina Lightner

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.

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