UCLA Alumni Among Newest American Board of Endodontics Diplomates
Endo residency program graduates Drs. Insoon Chang, Moein Sadrkhani, Eun Park, Jooyoung (Kevin) Song, and Mauricio Rubio achieve board certification.

Five alumni of the UCLA School of Dentistry’s postgraduate Endodontics residency program recently passed board certification and are now Diplomates of the American Board of Endodontics.
Achieving Diplomate status signifies the highest level of professional certification in endodontics. Candidates must demonstrate exceptional knowledge, clinical proficiency, and ethical standards. The new Diplomates are:
- Dr. Insoon Chang, class of 2019, and an assistant professor in the UCLA School of Dentistry’s Section of Endodontics.
- Dr. Moein Sadrkhani, class of 2020. He practices in Dallas and is a clinical faculty member at the Texas A&M College of Dentistry.
- Dr. Eun Park, class of 2021, and an assistant professor of Endodontics at the Oregon Health Sciences School of Dentistry
- Dr. Jooyoung (Kevin) Song, class of 2023. He practices in Valencia, Calif., and is a lecturer in the UCLA School of Dentistry’s Section of Endodontics.
- Dr. Mauricio Rubio, class of 2024. He practices in San Francisco and has achieved board certification in the shortest amount of time after completing a UCLA Endodontics residency.
"I am incredibly proud of our program alumni for achieving Diplomate status from the American Board of Endodontics. This accomplishment reflects their unwavering commitment to clinical excellence, lifelong learning, and professional integrity,” said Dr. Nadia Chugal, chair and residency program director for the Section of Endodontics. “Their success brings great pride to the UCLA Endodontics program and underscores the strength of our training and mentorship. We celebrate their dedication and look forward to their continued contributions to the field.”
To become a Diplomate of the American Board of Endodontics (ABE), candidates must meet the following qualifications:
- Education: Completion of an advanced specialty education program in endodontics accredited by the Commission on Dental Accreditation (CODA).
- Licensure: Possession of an unrestricted dental license in the U.S. or Canada, or equivalent credentials if internationally trained.
- Board Certification Process: Successful completion of the ABE's three-part certification process: Written examination, case history portfolio, and oral examination.