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Dentistry + Aesthetics

we are the perfect blend of
dentistry and aestheticS with personality

WHO WE ARE: Your Cosmetic Dentist in Bellevue, WA

Proudly serving Bellevue, WA and the greater Eastside — including Redmond, Kirkland, and Seattle. Dr. Libbi Finnessy offers cosmetic dentistry, medical aesthetics, and longevity medicine all under one roof. Services include porcelain veneers, dental implants, EMSCULPT NEO, EMFACE, EMSELLA, Botox, facial fillers, and medical grade skincare.  

Beauty is a science. Longevity is an Expertise.

At Longevity Expertise, we don’t just treat teeth — we treat the whole person. Your mouth is the gateway to your overall health, and its condition reflects and impacts everything from heart health and diabetes to brain function. But true well-being goes far beyond a perfect smile. Led by Dr. Libbi Finnessy, our practice is built on a science-meets-beauty philosophy, where cutting-edge dentistry, aesthetics, and longevity-focused treatments.

Cosmetic and General Dentistry

Aesthetics and Med Spa Services

Dentistry

A radiant, healthy smile is key to overall health and confidence. Take control of your smile with the Boss of the Floss! Dr. Libbi Finnessy offers a full range of general and cosmetic dentistry services, including porcelain veneers, dental implants, crowns, bridges, and oral surgery. Recognized as a top dentist in “Best of 425” and “Best of Seattle,” Dr. Libbi provides smile makeovers that can transform your appearance and boost your self-confidence. Experience how a beautiful smile can open doors for you. Call us today!  

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Aesthetics

Aesthetic treatments focus on restoring and enhancing your cosmetic appearance. These specialized procedures address deep scarring, skin laxity, wrinkles, hyperpigmentation, excess fat, and more, provided by Dr. Libbi Finnessy – Boss of the Gloss! They not only improve your features but also significantly boost your self-esteem. Studies have shown that aesthetic treatments can reduce symptoms of depression, increase confidence, and enhance psychological functioning.  The devices she utilizes in office include, Emsculpt Neo, Emface, Exion, and Emsella, as well as botox, facial fillers, teeth whitening, cosmetic dentistry, and more at her clinic.  

Dr. Libbi Finnessy proudly serves Bellevue, Redmond, Kirkland, and Seattle.  Longevity Expertise brings cosmetic dentistry, medical aesthetics, and longevity together under one roof.

cosmetic dentist Bellevue WA Dr. Libbi Finnessy

Who is the Boss

Dr. Libbi Finnessy

Dr. Libbi Finnessy is a dentist, medical aesthetics expert, and a truth-teller based in Bellevue, WA.  Graduating Summa Cum Laude with a degree in Biomedical Science to earn her Doctorate of Dental Surgery from Marquette University School of Dentistry.  She is a caring provider who believes science and beauty go hand in hand.  Dr. Libbi founded Longevity Expertise to bring cosmetic dentistry, medical aesthetics, and longevity under one roof.  Recognized as a top dentist in “Best of 425” in 425 Magazine and “Best of Seattle” in Seattle Magazine, she’s built an outstanding career on transforming smiles and lives — but her impact goes far beyond the surface. Come visit us and learn first-hand about her incredibly care based philosophy today.

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Lindzy Lehmann
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The team was so kind in getting me scheduled quickly, working with my limited timeframe due to childcare needs, and did a great job of communicating when my next appointments were coming up. Everyone in the clinic is so professional and considerate. From the moment you walk in the door, you are greeted with smiles and kind words. 10 out of 10 experience for caregiving and 10 out of 10 for kindness. Highly recommend to all my friends and family.
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Aly Hinds
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I absolutely love Libbi and her team! Myself and my son have been her patients for years, and we always have received the absolute best care. Debbie is my hygienist, and I can't recommend her enough, and Katarina is absolutely wonderful with kids and does a great job with my son. You can't go wrong with Longevity Expertise!
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Not Me
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Skilled dentist with an amazing staff.
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shibasalty
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Went to get a tooth removed and was scared. Literally not even 10 minutes later it was out and I was out! The staff is always so friendly and Dr.Libby is amazing at what she does. Definitely come and see her. Best dentist yet
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Jenna Fields
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I don’t trust my teeth to anyone else! Not only are they incredible at what they do , but every single human there is the kindest, most genuine soul you’ll ever meet! I always feel taken care of, and seen. Thank you for everything you do! Dr.Libbi is a literal Angel!
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Cassandra Dickson
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My daughter loves going to the dentist - we call that a win! Thanks Dr Libbi. So appreciate you and your whole team!
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Danny Lippman
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I’ve been seeing DR. Libbi for years now, and she’s hands-down the best dentist in all of the Puget sound area. She’s incredibly skilled, thorough, and gentle, and she always takes the time to explain what’s going on so you feel informed and taken care of. Every visit is consistent, professional, and genuinely comfortable. She has a great sense of humor to ease any anxiety that accompanies your trip to the dentist office. Her team is just as amazing. Liz at the front desk keeps everything running smoothly — super kind, organized, and always welcoming. And Debbie is a fantastic hygienist. She’s extremely thorough, gentle, and makes the whole experience easy. You can tell she cares about doing things right. From start to finish, the whole office delivers excellence. If you’re looking for a dentist who truly goes the extra mile and has a team that matches that level of care, Libbi is the one. I couldn’t recommend her more.
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Chris Filer
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Dr. Libbi and the team are AMAZING. I had been needing to find a new dentist for a while and the personality of the doctor and the staff are paramount for me. Obviously, they are very talented in their field, but you pair that with the incredible customer service and friendly nature of everyone there, and it's a WIN-WIN. Thank you for helping me regain my confidence and smile again.
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R Nerenberg
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Dr Libbi has been my primary care dentist for around 5 years or so. She has always been very professional. When I had a cleaning 3 months ago, she was away and had another dentist filling in for her. That dentist recommended a big procedure on my next visit. When I arrived for the new visit, I had an amazing experience. Dr Libbi sat me down and apologized for being gone previously. She said she reviewed the recommendation of the other dentist and said that based on her knowledge of my case it was unnecessary. That will save me over $900 and some pain. I am very impressed that Dr Libbi took the time and trouble to think critically about what is best for me. I've never had another dentist be so forthright about limiting any dental work, including that recommended by others. I'm very happy with her care and concern for me.
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Julie Ayaay
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My family and I have been seeing Dr.Libbi for a couple yeas now. Dr Libbi and staff are always upbeat, welcoming and will make you feel comfortable. Would HIGHLY Recommend everyone I know. Not only is Dr. Libbi the boss of floss and gloss ( she is the GOAT of dental ). Thank you Dr Libbi and staff.
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