A Compassionate Approach You Can Count On

Meet Your Trusted Dentist in Henderson, NV,for Over 20 Years

We take a thoughtful and conservative approach to dental care, focusing on preserving what makes your smile unique. The latest proven technologies help deliver predictably better outcomes.

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RATED 5.0 STARS
Selected Top Dentists 2026

Why Patients Love Siena Dental

G. B.
Wonderful dental office, efficient and friendly staff. Dr Mahon is very good dentist identifying issues but no pressure, work plan discussed and pricing shared in advance of scheduling, no surprises at time of work. Nice to be in office with up to date sophisticated equipment. Krisdie was my hygienist, very friendly and feel I recd very good cleaning, not just quick skim over. Office is easily accessible on Eastern Ave with ample parking in front. Happy to be patient here.😊
Kristina S.
Dr. Mahon and his team are professional and caring! If you’re nervous about going to the dentist for the first time, (or first time in a while), and want to find somewhere where you won’t feel ashamed or scared, choose Siena Dental! Everyone makes sure you’re comfortable and that your teeth and gums are at optimal health! Highly recommend! Call now! :)
Linda B.
I drive 35 miles to see Dr Mahon. I moved and tried 3 different dentist. They didn’t even come close to the expertise of Dr Mahon. No waiting for an hour, Sherie at the front desk is the best. My teeth are in the best hands of Las Vegas dentist! Siena Dental is the only place to go!!!
Jonathan K.
Dr. Mahon and staff are amazing! Couldn't be happier with the service they provided and the professional manner that they conducted themselves. This is one of the best experiences I've ever had with the dentist. I would highly recommend Siena dental to everyone looking for a great set of teeth!
Langkasingpogi L.
I had an excellent experience at this dental clinic! Libby, the hygienist, is incredibly skillful and friendly. She made me feel at ease with her pleasant demeanor and skillful hands. Dr. Mahon and the entire staff are very professional, knowledgeable, and welcoming. From the moment I walked in, I felt well taken care of. I highly recommend this clinic for anyone looking for top-notch dental care.
C. H.
I’ve been a customer for years! Everybody is so awesome! Dr. Dave Mahon is amazing and always ready to help me when I have a tooth issue! Always thankful! 🙏🏻🙏🏻🙏🏻
Ted J.
I just had a wonderful experience at Siena Dental. They were caring, professional and extremely efficient! I will be back.
Lana C.
I know I’m in good hands. I’ve been coming to sienna dental for 8 years. The whole staff is considerate and do an excellent job.
David B.
Excellent Dentist who did an incredible job! I am so pleased and grateful for his expertise, kindness, patience and knowledge.
Brenda M.
This dentist and staff are superb! The office and rooms are spotless. They actually do care about you as a patient and it definitely shows! Thank you for being so caring.
Edward B.
Amazing! New patient. Office atmosphere comfortable. Admin outstanding. X-rays, initial exam outstanding. Cleaning outstanding. Billing fast and accurate. Highly recommend!
Greg H.
Everyone was terrific. The dentist, the hygienist, and the rest of the staff were great. I just found my new dentist. Update, my second visit and they are still fantastic.
Valeria N.
I have been going to this office for many years and I love them! I recommend them to anyone looking for a superb dentist or hygienist all the time. Deserve more stars than five.
Pamela R.
I’ve been going to Sienna Dental with my 3 children for about 8 years. We absolutely adore the staff. They are kind, patient, gentle and friendly. Never pushy for treatment and have excellent communication.
Robert B.
Great doctor, great staff. Never had to wait long. I have been a patient there ever since Dr. Mahon took over the practice. I have experienced a few different procedures. All were done well .
Geraldine W.
Dr. Mahon did a great job in fixing a chipped tooth and making my teeth more even and smooth. I have been in Vegas over 35 years and had many dentist. This has to be the best ever and pricing is very good! I highly recommend them. Excellent staff too.
Brylee A.
I swear this is the best dentist I've ever been to. From cleanings to fillings. They are quick, efficient, and very kind. I've had issues in the past with dentists office's where I wasn't 100% numb or it was painful and this made me nervous to get a filling done but they made sure I was completely numb and made me feel very comfortable.. So happy I found this place definitely recommend!!
Tara L.
I switched to this dental office based on reviews and had my first appointment yesterday. They surpassed my expectations! Bree, the hygenist was absolutely wonderful! Dr. Mahon was friendly and welcoming. So pleased to have found them!
Bozhidar M.
My family and I have been using Siena Dental for our dental work for 17 years. They have never disappointed me! Dr Mahon is extremely professional individual who takes pride in his work! I highly recommend Siena Dental if you need dental work or a cleaning!
Cherryl T.
As usual my experience was wonderful. Dr Mahon and his staff are courteous, professional, and personable. They’re interested in your well being and do everything they can to insure a positive outcome. They are as flexible and accommodating as possible to see to your dental needs.

Our Office

Our modern office is designed with your comfort in mind. From friendly staff to state-of-the-art-technology, we ensure a low stress dental experience. See why patients love visiting Siena Dental for their oral health needs.
Dental examination room with a patient chair, monitor showing a tooth, and dental equipment.
A dentist's office reception area with blue walls, fish tank, and seating chairs.
Office reception area with an empty desk, chairs, and framed certificates on the wall.
A dentist's office with an examination chair and a large fish tank with orange fish.
A lone Joshua tree stands in a desert landscape under a bright sun.
Dr. Dave Mahon

Dr. Dave Mahon

I believe in taking the time to listen, explain, and offer options that make sense for you. It’s about more than fixing teeth – it’s about helping people feel good about their smiles.
MEet Dr. Mahon →
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Dr. Name Last Name

DDS

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Emergency

Emergency Dentistry

Accidents happen. Whether it’s a broken tooth or sudden pain, we’re here when you need us.
 
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Dental Implants

Brighten your smile with professional whitening options tailored to fit your lifestyle.
 
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Cosmetic

Teeth Whitening

Regain the confidence to smile, eat, and speak naturally with secure, long-lasting dental implants.
 
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Located in Henderson, NV

Siena Dental is proud to serve Henderson and the surrounding community. We combine personalized care with modern techniques to deliver a better dental experience. Whether you need preventive care or a complete smile makeover, we’re here to support your long-term oral health.

Mon - Thu
8AM - 5PM
Fri - Sun
Closed
Mon - Fri
8AM - 5PM
Saturday
Closed
Sunday
Closed

Siena Dental is conveniently located at the northwest corner of S. Easter Avenue and Siena Heights Drive in the Stonehill Marketplace.

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Helping Henderson Enjoy Healthy Smiles

Flexible Financing

We offer financing options that fit different budgets because everyone deserves quality care.

A Comfortable Environment

Our friendly staff focus on making your visit calm and stress-free.

A Thoughtful Approach

We don’t do sales pitches. Our goal is to offer care that respects your needs and comfort level.

Tailor to Your Needs

We take the time to listen and explain while providing treatment solutions.

Do You Take My Insurance?

Siena Dental accepts a variety of insurance plans, including  Ameritas, Cigna, Humana, MetLife, Sun Life, and United Concordia. We also offer flexible financing options to make your dental care more affordable.
Call: (702) 567-0000

Connect with Us

Let Siena Dental be your reason to smile. Call (702) 567-0000 and schedule your visit.
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