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.

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.”

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!!”

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 !”

Brookstorm Honorblade

Happy Client from Mercer Island Office

“Friendly, comforting, professional, and painless. ;)”

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? ❤️”

Adrestia Frontida

Happy Client from Mercer Island Office

“Friendly, casual, and comfortable environment, because of the team of knowledgeable and caring staff, starting with Molly at the front desk!😃”

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!”

Robb Kristianson

Happy Client from Kirkland Office

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

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!”

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!”

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.”

Nelson Lopez

Happy Client from Mercer Island Office

“Very very exceptional service, from making the appointment all the way to check out.”

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!”

sebastian gillbanks

Happy Client from Kirkland Office

“Very friendly staff and quality services”

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.”

Ruth Combs

Happy Client from Kirkland Office

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

Jovany Lopez

Happy Client from Kirkland Office

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

Dan Nordale

Happy Client from Mercer Island Office

“Thomas Dentistry makes going to the dentist something to look forward to.”

B B

Happy Client from Mercer Island Office

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

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