Meet Our Doctors

John D. Beckwith, D.M.D.

With more than 30 years in private dental practice, Dr. John Beckwith has become a professionally recognized dentist and implantologist. His commitment to continued education allows him to stay at the forefront of dentistry, offering patients the most advanced solutions available.

In addition to performing general, cosmetic, and advanced dental care, Dr. Beckwith is one of the country’s top providers in implant dentistry. He has been accredited by some of the world’s leading authorities in implantology, as he demonstrates an elevated level of skill and expertise. Over the course of his career, Dr. Beckwith has surgically placed over 5,000 dental implants. He continuously participates in advanced courses, such as the Misch International Implant Institute surgical program, in an effort to further refine his technique in implant placement.

Education & Training

  • Dental School – University of Pennsylvania, School of Dental Medicine
  • Hospital Externship Program – Robert Wood Johnson University Hospital
  • Two-Year Fellowship – Institute of Growth and Development in Pediatrics
  • Undergraduate – Fairleigh Dickinson University (magna cum laude)

Memberships & Affiliations

  • Diplomate of the American Board of Oral Implantology
  • Fellow International Congress of Oral Implantology
  • Fellow Academy of General Dentistry
  • Fellow American Academy Implant Dentistry
  • Member American Dental Association
  • Member N.J. State Dental Association
  • Recognized “American Top Dentist” 2011, 2014

At Cornerstone Dental, Dr. Beckwith believes in offering each patient fully customized dental treatments based on their specific needs and preferences. This customized approach, combined with his extensive training, has earned him the title of “NJ Top Dentist” for 2011, 2012, and 2014. In addition to his private practice, Dr. Beckwith is also on staff for dental resident training at Jersey Shore Medical Center.

My experience at Cornerstone Dental with Dr. Beckwith was very satisfactory. The first moment I entered to the office building the atmosphere was warm and friendly. I felt Iike I was at home. The office service was smooth and efficient. Dr. Beckwith did an excellent job and I am extremely happy with my new smile. I will strongly recommend his professional service.

Patricia Tatiana Lukiw

December 20, 2017

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Arlene O’Brien, D.M.D

Dr. Arlene O’Brien has over 10 years of experience in private dental practice. Her approach to patient care is focused on learning and listening to the needs of each individual patient, while using her refined skills and the most modern dental technology to provide comprehensive, high-end results. Her warm personality and attention to detail create lasting loyalties among patients.

Dr. O’Brien is a graduate of Rutgers University, where she earned high honors in both psychology and biology. Her academic achievements gained her entry in to the accelerated B.A./D.M.D. program, a joint program between Rutgers and New Jersey Dental School (then part of the University of Medicine and Dentistry of New Jersey). After completing her dental training at New Jersey Dental School, she accepted a hospital residency at the Jersey Shore University Medical Center. Dr. O’Brien continues her affiliation with Jersey Shore University Medical Center as a resident supervisor, for post-doctoral training.

Dr. O’Brien is an active member of the American Dental Association, the New Jersey Dental Association and the Academy of General Dentistry. She currently sits on the Board of New Jersey Academy of General Dentistry as their Continuing Education Chairperson. In that capacity, she coordinates continuing education training for dentists across the state, while keeping her own dental skills on the cutting edge.