• (516) 921-3290
  • maddds@optonline.net

Mark A. DeNigris, DDS: Providing Quality Dental Services

Welcome to the Office of Mark A. DeNigris, DDS

At the office of Dr. Mark A. DeNigris, your dentist in Syosset, we are committed to giving you a beautiful and healthy smile. Our expert skills and compassionate care coupled with utilizing the latest advances in dental technology make every visit to our practice a positive, comfortable, and stress-free experience.

We have been proudly serving the Syosset community and the surrounding areas of Oyster Bay, Woodbury, Jericho and Huntington for over 37 years. In our office, every patient is treated with the individualized care and attention that they deserve. We take the time to listen to your smile goals, assess your dental needs, and develop the best treatment plan. We recognize that the best results are the product of working with a trusted partner in care.

Our state-of-the-art office provides a comprehensive range of dental services for every member of your family. Using the most advanced technology and treatment modalities, we offer dental services that can help you to maintain your oral health for a lifetime. In addition, we can provide you with a wide range of solutions to cosmetically transform the appearance of your smile and to restore a smile compromised by dental problems or other factors.

Some of our Services include:


Dental Implants



Root Canals

Teeth Whitening

Mr S.

"Very pleasant experience!! Practically pain-free dental experience, which is still an understatement! I would highly recommend Dr. DeNigris to anyone looking for a competent, trustworthy dentist. Easy and convenient appointment scheduling and times, and the office is very nice and modern. Very personable dentist and staff, which go a long way in making the patient comfortable. My teeth look fantastic...and are so clean!! They still look great after 5 weeks of brushing and flossing. They motivated me to keep with the flossing. Thank you!!"

Caroline & Sienna

"Dr. Mark is GREAT! Not sure how many kids like going to the dentist but, my 7-yr-old has been going to him for 2 years and actually looks forward to the appointments. He is a gentle, patient and tell-it-like-it-is kinda guy which I appreciate. Thanks for keeping our smiles bright, Doc!"

Meredith G.

"I've been going to Dr. Denigris for about 12 years now. I have a serious dental phobia and he is the only one who worked with me and calmed me enough to make me feel comfortable. I am a very difficult patient and I had very unhealthy teeth due to my dental phobia. He was/is extremely kind and patient with me. After years of extensive work, my teeth are now beautiful and healthy and I am happy to see him for regular checkups. He also sees my husband and 4 young sons. I just started Invisalign with him and I am so happy! He is a fantastic dentist and person and I highly recommend him!! His entire office staff is amazing too!"