Richard Marcus

Technical excellence. Exceptional care.

5.0 average rating on Google

Request a consultation
Steven Cooper

Specialized dentistry that will make you smile.

5.0 average rating on Google

Request a consultation
Dr. Ivan Lukachynets, DDS hero slide

Technical excellence. Exceptional care.

5.0 average rating on Google

Request a consultation
Dr. Natasha Kapoor, DDS,MS hero slide

Technical excellence. Exceptional care.

5.0 average rating on Google

Request a consultation

Excellence is our specialty.

Our team at Long Island Dental Specialty is dedicated to providing exceptional patient care through comfortable treatments.

Endodontics
Periodontics
Anesthesia
Laser
Emergency

We have over 1000 5-star Google reviews!

Louise L.

i saw Dr. Marcus for the first time on 7/1/26 after having terrible experiences at another endodontist in Woodbury. Dr. MARCUS was so reassuring and explained every thing in detail about my upcoming procedure/ a vast difference from the previous dentist. I know I will be in good hands with this wonderful professional!

Tina R.

I was in a lot of pain because I had let a tooth go that needed a root canal and became infected. Long Island Dental Specialty took me the same day. Everyone there was extremely nice and Dr. Marcus is amazing!! I had a great experience and so happy that I came here. I would highly recommend!! Thank you again Dr. Marcus.

Natalie P.

Dr Marcus and his staff went out of their way to immediately solve my referred tooth pain with an emergency root canal. Everyone was so empathic, kind, calm, thorough and professional. I felt immediately better wheb I left. Thank you all.

Rob H.

Periodontist visit with Dr Kapoor, was smooth & out in 27 minutes.

Steven M.

Dr Marcus is very informative, and relatable making the whole process very comfortable for me and the service and staff is great as well

riley n.

I was so nervous when I found out that I had to have root canal. I was referred to Dr. Marcus. His office staff made me feel at ease from the moment I spoke to them. They are so friendly and accommodating. I could not imagine that this procedure could have been any easier or more convenient. Thank you for making this experience so positive.

Ryan A.

I had a good experience. Everyone was very accommodating, polite, and professional. My procedure went very smoothly.

Lisa S.

Dr. Steven Cooper is truly exceptional. I recently took my mother to see him, and from the moment we walked into his beautiful office, we were treated with kindness, patience, warmth, and professionalism. Dr. Cooper has an incredible bedside manner — he is not only highly skilled and knowledgeable, but also funny, compassionate, and genuinely caring. His entire staff is wonderful, especially Nancy, who went above and beyond to make us feel comfortable and cared for. It is rare to find a doctor and office that combine excellence in care with such humanity and heart. I cannot recommend Dr. Cooper highly enough.

Kim R.

I love Dr Ivan!! The staff is so nice and make me feel very comfortable. He makes the whole experience very pleasurable and I’m so glad I am his patient !! He is kind, helpful and encouraging!!

donna f.

Dr Marcus is incredible!! If I ever need a root canal again I will not have any anxiety about having it done again with Dr Marcus. He let me know step by step what he was doing and what I should expect. He said I may have some discomfort later on and told me what to do to relieve the pain if it occurred. It never happened!!!! I highly recommend Dr Marcus- you will be in good hands!

Faith J.

Dr Marcus is the absolute best. I was nervous and he made me feel at ease. Best of all, he made sure the procedure was painless.

marie S.

I needed to get into the office I had some pain. The team made me an appt asap and I was taken care of. I am so grateful for their work with attitude to help me . They are a wonderful office and professional team .

Convenient payment options available and
most insurance providers accepted.

Enjoy the flexibility of paying through monthly payments.

CareCredit is a healthcare credit card designed for your health and wellness.
Learn more

Our practice accepts most major dental insurance providers.

Click below to see if your insurance provider is accepted at our practice.
Learn more

Welcome from your Long Island Endodontists, Periodontists and Dental Specialists

Do you have a toothache? Our endodontists and periodontists in Long Island, have decades of combined experience treating root canals. We excel at eliminating tooth pain and preserving your natural teeth so you can eat, laugh and speak with confidence for years to come.

Long Island Dental Specialty Welcome Video

Meet the hard working Periodontists & Endodontists who make up Long Island Dental Specialty, where we put our patients first. Our goal is to treat each patient as an individual, so they leave feeling like they were the only ones being cared for. That’s why we have many years of experience and happy customers under our belt. 

Our root canal specialists provide the highest standard of professional treatment and we are honored by the number of general dentists, pediatric dentists, and specialists who recommend their patients to us as their preferred endodontists and periodontists on Long Island. We take pride in providing anxiety-free root canal treatments and more endodontic and periodontic procedures in our state-of-the-art facilities in the Long Island, NY towns of Great Neck and Huntington.

While most people only require nitrous oxide (laughing gas) and a local anesthetic, we also partner with board-certified anesthesiologists to offer sedation dentistry at our office. Sedation dentistry, also known as stress-free dentistry or sleep dentistry, is a wonderful option for people with high anxiety about dental visits.

Our team is fluent in Spanish, Russian, Ukranian, Chinese and Hebrew. We focus on saving your natural teeth from having to be extracted so you can avoid more expensive and time-consuming procedures.

We also specialize in dental implants and periodontal disease treatment

Whether you’d like to replace a missing tooth or teeth with dental implants, need periodontal therapy to combat gum disease and prevent future tooth loss, or desire a cosmetic procedure to enhance your appearance, our team has the experience and skill you need.

Get out of pain. Call today for a root canal appointment in Long Island, NY

If you’re in pain from a toothache, call us today. We offer same-day consultations and can help you feel better quickly. We have been performing root canal procedures for more than 30 years. 

Call us today to schedule your appointment with a root canal specialist in Long Island. We look forward to helping you.