Last Update: October 15, 2026

About Advanced Periodontics & Implant Dentistry

Dr. Richard Nejat, DDS

Advanced Periodontics & Implant Dentistry is a specialist periodontal and dental implant practice with offices in Manhattan, Franklin Square, Long Island, Bronxville in Westchester and Nutley, New Jersey. Every doctor on our team is a periodontist: a specialist who has completed years of additional training in the gums and jawbone, the two things that decide whether natural teeth survive and whether a dental implant lasts. We treat gum disease, save teeth where they can be saved, and replace them with implants where they can’t.

Why A Specialist Practice

Most dental implant problems start below the gum line: not enough bone, active gum disease, or an implant placed without a plan for either. That’s why so many of our patients are referred to us, or come to us for a second opinion after an implant placed elsewhere has failed. Our periodontists plan and place the implant, manage the bone and gum around it, and look after it over the long term.

  • Same-day implants since 1998. Immediate-load treatment, where teeth are attached the same day the implants go in.
  • Over 10,000 implants placed, including more than 1,000 full-arch cases.
  • Patients always leave with teeth. If an implant doesn’t integrate, we place another and let it heal, and you keep your bridge throughout.
  • Complex cases are routine here, including zygomatic implants for severe bone loss and the repair or replacement of failed implants.

Meet Our Periodontists

Dr. Richard Nejat, DDS

Dr. Richard Nejat is a board-certified periodontist and Diplomate of the American Board of Periodontology. He earned his Doctor of Dental Surgery at New York University and completed a three-year residency in periodontics and dental implants at Stony Brook University. He is a Clinical Assistant Professor at both NYU and Stony Brook, has lectured nationally and internationally since 2000, including at the American Academy of Periodontology and the Academy of Osseointegration, and has served as a research investigator on clinical trials in bone grafting and periodontal therapy. Read Dr. Richard Nejat’s full profile.

Dr. Daniel Nejat, DMD

Dr. Daniel Nejat is a board-certified periodontist and Diplomate of the American Board of Periodontology. He earned his Doctor of Dental Medicine at the University of Medicine and Dentistry of New Jersey and completed three years of postgraduate training in periodontics at the NYU College of Dentistry. He has published peer-reviewed continuing education articles on periodontal inflammation and implant maintenance, and is recognized as a Castle Connolly Top Dentist for 2026. Read Dr. Daniel Nejat’s full profile.

Dr. Eugenie Lee, DMD

Dr. Eugenie Lee is a board-certified periodontist and Diplomate of the American Board of Periodontology. She earned her Doctor of Dental Medicine with honors at the University of Medicine and Dentistry of New Jersey, then completed a three-year residency in periodontics and a master’s degree at the University of Maryland. She is a Clinical Assistant Professor in the Department of Periodontics at the New Jersey Dental School, with particular expertise in regenerative and soft tissue procedures and full-mouth rehabilitation. Read Dr. Eugenie Lee’s full profile.

Dr. Daniel Schinazi, DDS

Dr. Daniel Schinazi is a board-certified periodontist and Diplomate of the American Board of Periodontology. He earned his Doctor of Dental Surgery at the NYU College of Dentistry, graduating with honors in periodontics and implantology, and received the Quintessence Award for Clinical Achievement in Periodontics and the Bernard Rudner Award for comprehensive care. He completed his postdoctoral training in periodontics and implantology at NYU. He focuses on minimally invasive surgery, including LANAP for gum disease and failing implants. Read Dr. Daniel Schinazi’s full profile.

Dr. Annemarie Olga Athansios, DMD

Dr. Annemarie Athansios is a board-certified periodontist and Diplomate of the American Board of Periodontology. She earned her Doctor of Dental Medicine with honors at Rutgers School of Dental Medicine, where she received the Professionalism Award. She completed a three-year residency in periodontics and a Master of Dental Science at Rutgers, serving as chief resident and receiving the Michael J. Deasy Endowed Scholarship. She also trained with the Institute for Advanced Laser Dentistry. Read Dr. Annemarie Athansios’s full profile.

Rather than tying each doctor to one office, we schedule you with the periodontist best suited to your case. If you’d like to see a particular doctor, tell us when you call.

How We Treat Patients

Our approach is conservative. We would rather save a tooth than replace it, and when a tooth can’t be saved we plan the replacement around your bone, your bite and your budget, not around a single preferred procedure. Every treatment plan is explained in full, including the options we don’t recommend and why.

All our periodontists are trained in the LANAP protocol through the Institute for Advanced Laser Dentistry, so laser gum surgery is available alongside conventional gum disease treatment.

The Technology We Use

Implant treatment here is planned digitally before it starts. We use CBCT 3D imaging to measure the bone, computer-guided surgery and Navident dynamic navigation to place implants precisely, and digital impressions and photogrammetry to fit the teeth that go on top. Our page on what makes us different explains each of these in more detail.

Our Offices

Our Manhattan, Westchester and Nutley offices work with many PPO dental insurance plans; see our accepted dental insurance plans and financing options.

Professional Memberships

All five of our periodontists are board-certified Diplomates of the American Board of Periodontology. Between them, they are members of the American Academy of Periodontology, the Academy of Osseointegration, the Northeastern Society of Periodontists, the New Jersey Society of Periodontists, the American Dental Association and the International Congress of Oral Implantologists.

Book A Consultation

Whether you’ve been told you need gum surgery, you’re considering dental implants, or you want a second opinion on a treatment plan, a consultation is the place to start. We’ll examine you, take any scans needed, and explain every option.

Call us at (347) 493-2439 or schedule your consultation online.

Frequently Asked Questions

Are All Your Doctors Periodontists?

Yes. Every doctor at Advanced Periodontics & Implant Dentistry is a periodontist, a dental specialist trained in gum disease, bone and dental implants.

Which Office Should I Visit?

Whichever is most convenient for you. Tell us what you need treated when you call, and we’ll schedule you with the periodontist best suited to your case.

Do I Need A Referral?

No. Many patients are referred by their dentist, but you can book a consultation directly.

Can You Help If An Implant Placed Elsewhere Has Failed?

Yes. Second opinions and failed implants are a large part of our work. See why dental implants fail and what can be done about it.

Dr. Richard Nejat, DDS

Dr. Richard Nejat is a board-certified periodontist offering leading-edge dental implant placement and gum surgery techniques. Dr. Nejat has completed many years of advanced training at highly recognized medical institutions and is a member of numerous leading professional organizations. Recognized as a foremost New York dental implants provider, Dr. Richard Nejat is frequently invited to lecture at professional seminars and symposiums. Dr. Nejat has been practicing since 1997. Dr. Nejat is a member of the American Board of Periodontology, American Academy of Periodontology, Academy of Osseointegration, Northeastern Society of Periodontists, New Jersey Society of Periodontists, New York Dental Society, and International Congress of Oral Implantologists.

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