Dentist in St. James

Welcome to St. James Dental!

Here at St. James Dental, our St. James dentist prides themselves in providing our patients with the highest quality dental care. We value our patients’ health as paramount. Our dental staff understands your concerns and anxieties, and enjoys educating our patients and keeping them informed and at ease about their treatments and procedures at all times. Our dental office uses state-of-the-art equipment and technology, and the strictest sterilization techniques.

We strive to make each dental appointment pleasant and stress-free; serving the St. James community to the best of our abilities is always our number one priority. Our St. James dentist offers comprehensive dental care to our patients ranging from general, preventive, restorative and cosmetic dentistry. From a thorough initial exam, to treating cavities and preventing them with fluoride and sealant treatments, to teeth whitening and dental crowns and implants, having a beautiful smile isn’t only about the aesthetics; maintaining dental health and hygiene is essential to one’s overall well-being.  

Our doctors, Dr. Michael E. Segnini and Dr. James F. Donahue are highly acclaimed in the healthcare world.

Dr. Segnini Credentials and Memberships:

  • Dental Organization for Conscious Sedation
  • Nobel Biocare Implant Certified
  • Invisalign Certified Doctor
  • Imtec Implant Certified
  • Charles Hospital Department of Dentistry
  • Mather Hospital Department of Dentistry
  • Clinical Instructor St. Charles Hospital GPR
  • American Dental Association
  • New York Dental Association
  • Suffolk County Dental Society

Dr. Donahue Credentials and Memberships:

  • Internet Dental Alliance Member
  • New York Dental Association
  • Member of St. James Chamber of Commerce Since 1985
  • Academy of General Dentistry
  • American Dental Association
  • Suffolk County Dental Society
  • Member of St Charles Hospital Dental Staff since 1984

They have a wide range of knowledge and experience in the field of dental health, and we are excited for you to meet them. Make an appointment with our St. James dentist by calling, (631) 528-5189, today!


587 Lake Ave
St. James, NY 11780
(631) 528-5189