DC Smile Studio

Your Dental Office

Continuing a Tradition of High-Quality Dental Care

about us

About Us

The high-quality care we provide at D.C. Smile Studio continues the tradition started thirty years ago when Dr. Samuel Lievano opened his first dental practice. His deeply loyal patients have entrusted their dental care to the practice through all these years.


Dr. Lievano and Dr. Viviana Avila-Gnau share the same passion for dentistry and the same desire to provide the best care for our patients, and we are confident that you will feel right at home in our office. We welcome all patients as if they were family, and we invite you to join us!


We work hard to keep up with the latest advances in technology. We have outfitted our state-of-the-art facility with the latest equipment, allowing us to meet your needs and provide you with the most modern, high quality dental care available.

Welcome to your dental practice!

We are here to help you, whether you are looking to maintain your healthy teeth or to improve your dental health, whether you are seeking to keep the smile you have or to get the smile you’ve always wanted. With our compassionate, caring approach, we are here to help you reach your goals. Even the most fearful patients have given themselves the opportunity to be treated here, and they are happy they did when they realize they can trust us and overcome their fear.


We can provide a wide array of dental services that you and your family may need, including routine checkups and cleanings, repair of tooth damage, Invisalign®, cosmetic dentistry, TMJ pain, and treatment of more complex dental-related issues. We may even be able to help you with problems such as snoring and sleep apnea.

DC Smile


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Patient Testimonials

We care about the opinion of our clients.

client Testimonial Anna Marie
client Testimonial Anna Marie
client Testimonial Anna Marie
client Testimonial Anna Marie

From Anna Marie P:

Do you ever feel anxious or afraid when you come to our office? Did you ever feel that way in the past, or at other offices?

• I always used to be anxious about going to the dentist, but not anymore – not at your office. My experience now is highly comfortable.

How do you feel about Dr. Avila-Gnau? Would you recommend her to other prospective patients? Why?

• Wonderful, she makes us feel so comfortable. Yes, I will and I’m recommending her to my friends. Dr. Avila-Gnau has very delicate hands. She explains what she is doing, always with good disposition, friendly and good humor. She makes you feel very comfortable.

You recently got a white filling on your front tooth? How satisfied are you with it? Do you like it?

• I like it very much, I cannot notice the filling at all. Did not have any discomfort.

Just recently you were able to experience our one-day ceramic crown for the first time. What did you think of the process? How do you like your new crown? Would you recommend this procedure to other patients who need crowns on their teeth?

• I’m very well pleased, happy that I can be treated this way; I have had lots of treatments for many, many years, but this is the top of the line. By all means I’ll recommend this procedure.

quote   We would like to invite you to experience what Anna Marie and the rest of our patients experience at our office: a safe, caring, professional -- and even fun! -- environment. Give us a call and start your journey to a beautiful smile, healthy teeth, a healthy mouth, and a healthy body   quote

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We want to share a very exciting opportunity with you! If you’ve ever wondered how your smile would look with Invisalign, just click on the link below, upload a selfie, and check it out. (It only takes a few seconds to display.) We will be more than happy to speak with you to see if you are a good Invisalign candidate.

Feel free to share this link with your friends and family. We would love to answer any questions you or they might have! You can give us a call or request an appointment right on our website.


Thank you for choosing us for your dental care! We are happy to serve you and are welcoming new patients! We currently serve patients from Washington, D.C., and many surrounding suburbs in Maryland and Virginia (to include Chevy Chase, Potomac, Bethesda, Rockville, Gaithersburg, Germantown, Frederick, Arlington, Alexandria, McLean, and many more).

Phone: (202) 244-8780
Monday – Friday, 7:30am – 4:00pm

4910 Massachusetts Avenue, NW
Suite 112
Washington DC, 20016


By Bus or Metro

To plan your trip by Metro, you can use the WMATA Trip Planner. Be sure to use the bus stop right across the street from us at Massachusetts Ave. & Yuma Street.


The closest Metro stop is the Friendship Heights Station.