About Us



Diamond Bar

1111 Grand Ave., Suite D Diamond Bar,

CA 91765

San Dimas Dental Center

1111 W. Covina Blvd., Suite 130 San Dimas,

CA 91773

Rancho Cucamonga Endodontic Specialty

9353 Fairway View Place, Suite 210 Rancho Cucamonga,

CA 91730

Dr. Samir Batniji

Dr. Samir Batniji has many years of experience in the dental field and has been a practicing Endodontics since 1987. After graduating from dental school in 1976, he practiced general dentistry for 8 years and then pursued his graduate training. In 1987, Dr. Batniji earned his certificate in Endodontics from the University of Southern California. Dr. Batniji also earned his Master of Science in Education from USC where he continues to serve as a Clinical Associate Professor in the surgical sciences department – section of Endodontics. He also serves in several committees at the USC School of Dentistry.

Dr. Batniji and his associates are members of the American Dental Association, the California Dental Association, and the American Association of Endodontists to name a few. Dr. Batniji is also a member of the Southern California Academy of Endodontists where he served as the past president from 1995-1996.

Dr. Raaed Batniji

Dr. Raaed Batniji has been involved with endodontics since he was in high school which was when he began dental assisting under the mentorship of his father, Dr. Samir Batniji. That was essentially the beginning of the apprenticeship that led him to this profession, one degree at a time. Dr. Batniji obtained his Doctor of Dental Medicine degree from Boston University in 2006. He practiced general dentistry until 2010, then joined the Endodontic Residency Program at the University of Southern California and obtained his certificate in Endodontics in 2013.

Since 2007, Dr. Raaed Batniji has been a clinical faculty member in the Doctor of Dental Surgery program at the Ostrow School of Dentistry at USC. He is responsible in supervising and maintaining coverage of dental students in the Urgent Care Dental Clinic and in training and providing instructions to the doctoral students in the Endodontic clinic.

Dr. Duhli Chen

Dr. Duhli Chen received his undergraduate degree from the University of California Irvine, with his bachelors in Psychology and minor in Business Management. His education prepared him for attending dental school at the University of Southern California, and also his advanced education and certificate in Endodontics.

Dr. Chen has always been interested in the healthcare field and dentistry offered everything he was looking for; a field that allowed him to apply healthcare and business knowledge into a career. He wanted to pick a specialty that really challenged him. Endodontics allowed him to do that by resolving disease and difficult dental problems. Dr. Chen is a member of the AAE, CDA, and Orange County Dental Society. He enjoys surfing, swimming, snowboarding, and running. He has a lovely wife Jennifer, and two beautiful children.

Dr. Nermine Batniji

Dr. Nermine Batniji began her journey at a young age when she would visit her father at his endodontic practice.  While too young to grasp the intricacies of the practice, treating patients made a lasting impression on her. Dr. Batniji attended UC Irvine and graduated with a bachelor’s degree in Economics. She worked for a Nobel Laureate performing atmospheric research prior to attending the University of Southern California dental school. Following the completion of her bachelor’s in Dental Hygiene and 4 year Doctor of Dental Surgery degree, she attended USC’s Advanced Endodontic residency. Her appreciation for teaching and education led her to be part time faculty in the clinical Periodontics and Endodontics department at USC. She served a 4 year term as a representative on the American Dental Education Association where she was the voice of her peers on the future of dental education on a national level.

Dr. Batniji sat on the ethics committee, as well as the student professional performance evaluation committee, and is committed to providing her patients with the highest quality and standard of care. One of Dr. Nermine Batniji’s greatest passions is serving those in need. She is committed to providing care to patients both locally and internationally by volunteering endodontic treatment to underserved communities in California and around the world – from Southeast Asia to Central America. Dr. Nermine Batniji believes “it is in endodontics that we are able to save teeth that can be beautifully preserved, while not only relieving the pain, but also treating the pathology through endodontic therapy.” During her free time, Dr. Batniji enjoys traveling, skiing, and spending time with her family and friends.

  • Licensed by the Dental Board of California
  • Member of CDA. ADA, AAE, and Tri County Dental Society
Dr. Reuben Johnson

Dr. Reuben Johnson graduated from USC Dental School in 2012 and received his Certificate in Endodontics from the Ostrow School of Dentistry at the University of Southern California. Between finishing dental school and starting his endodontic program, Dr. Johnson completed two General Practice Residencies in New York with focus on emergency dental care and surgery, and dental implant restorative. He then went on to work in private practice as a general dentist and taught part-time as a volunteer at the Emergency Dental Clinic at USC.

Dr. Johnson has received multiple academic scholarships and has been involved in many organizations and associations. Ayuda, a dental humanitarian organization, allowed him to travel for the purpose of providing dental care to underserved children in countries like Belize and Panama. He served on the emergency response team at USC School of Dentistry and he was a past president of his dental fraternity, Delta Sigma Delta.

Dr. Johnson loves spending time with his family and with his wife, who is also a dentist. He enjoys watching movies and working out. His interests include traveling, playing golf, architectural design and trying new food experiences. Dr. Johnson is thorough and has a meticulous attention to detail. When asked what is one of his strengths he admits, “I work very hard at paying close attention to detail for accuracy to make sure things are done the right way.”

Dr. Johnson is licensed by the Dental Board of California and is a member of the California Dental Association, the American Dental Association, and the American Association of Endodontics.

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