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.

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!”

Nelson Lopez

Happy Client from Mercer Island Office

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

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.”

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”

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!”

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!”

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.”

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!”

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.”

Richard Fryant

Happy Client from Kirkland Office

“Best dentistry I've ever been to. The people here are thoughtful and very professional. The work I've had done has been very high quality.”

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.”

Chelsey Swan

Happy Client from Kirkland Office

“I love Thomas Dentistry! Tracie is my usual hygienist. It might be strange to say, but I enjoy my teeth cleanings here. They are so easy and, as far as dental work goes, as comfortable as they can be.”

sebastian gillbanks

Happy Client from Kirkland Office

“Very friendly staff and quality services”

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!”

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.”

linda

Happy Client from Kirkland Office

“Had my teeth cleaned today again by Rosie. She is an excellent Dental hygienist. Takes the time to answer all my questions and is very informative. Greatly appreciate it.”

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.”

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?!!”

D Enright

Happy Client from Kirkland Office

“Wonderful, welcoming staff always leaves me smiling!”

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