A Seventh-day Adventist Organization

Meet Your Dentist

All of the dentists, specialists and hygienists at our clinic are faculty members of the Loma Linda School of Dentistry. These individuals are some of the most experienced care givers in their field and well versed in the latest techniques. Many of our faculty members regularly engage in research, furthering their knowledge base and contributing to the field of dental science.

Our care providers represent every area of clinical dentistry making our practice one of the only ones in the Inland Empire to offer such an extensive array of dental services. These faculty members are committed to excellence and providing the highest quality care.

Dental Anesthesia Attending Faculty

Dr. Leyman

 

John Leyman, DDS

Director, Koppel Special Care Dentistry Center
Associate Professor

Dr. Leyman received his DDS degree from the University of the Pacific School of Dentistry in 1978 and then entered into the Anesthesiology training program at Loma Linda University Medical Center. He received his certificate for general anesthesia residency training in 1980 and has served as a faculty member for the Loma Linda University School of Dentistry for over thirty years. Dr. Leyman is a Diplomate with the American Dental Board of Anesthesiology where he has been certified since March of 1996.

 

Dr. Trapp

 

Larry Trapp, DDS, MS

Director, Advanced Education Program in Dental Anesthesiology
Associate Professor

Dr. Trapp graduated from the University of California San Francisco in 1975 with his DDS degree and an MS in Pharmacology. He completed a two year anesthesia residency at Harbor-University of California, Los Angeles Medical Center in 1977 and then became a faculty member at Loma Linda University School of Dentistry in 1990. Dr. Trapp began serving as part-time attending dental anesthesiologists in 1993 and was appointed the Director of the Advanced Education Program in Dental Anesthesiology in 2006. He is a Diplomate with the American Dental Board of Anesthesiology where he has been certified since March of 1996.

Part-time Dental Anesthesia Attending Faculty

 

Dr. Chu

 

Larina Chu, DDS

Assistant Professor, Department of Dental Anesthesiology

Dr. Chu graduated from Loma Linda University School of Dentistry in June 2011 with her DDS degree. She then completed the two year dental anesthesia residency in 2013. Dr. Chu works in private practice and also works as one of our part-time attending dental anesthesia faculty.

 

Dr. Garcia

 

Maria S. Garcia, DMD

Assistant Professor, Department of Dental Anesthesiology

Dr. Garcia graduated from Southern Illinois University School of Dental Medicine in June 2010 with her DMD degree. She went on to complete a two year dental anesthesia residency here at Loma Linda University School of Dentistry and received her certificate in June 2016. Dr. Garcia works in private practice and is our part-time attending faculty team.

 

Jane Gumangan, DDS

 

Jane Gumangan, DDS

Assistant Professor, Department of Dental Anesthesiology

Dr. Gumangan graduated from Loma Linda University School of Dentistry in 2013 with her DDS degree. In 2016, she completed her dental anesthesia residency training at LLUSD as well. Dr. Gumangan works in private practice in Arizona, and also works as one of our part-time attending dental anesthesia faculty.

 

Dr. Yim

 

Christina Yim, DMD

Assistant Professor, Department of Dental Anesthesiology

Dr. Yim graduated from Boston University School of Dental Medicine in 2003 with her DMD degree, after receiving a Masters degree in Public Health from Loma Linda University. Prior to entering the dental anesthesiology program, Dr. Yim completed a one-year general practice residency at the Veterans Hospital in Loma Linda. She then completed the dental anesthesiology residency program in 2007. Dr Yim has been working full time at a dental surgery center in Northern California since 2007.

Treating Dental Faculty

Dr. Burtch

 

Perry Burtch, DDS

Dr. Burtch graduated Loma Linda University School of Dentistry in 1989 and then spent fourteen years as a missionary dentist in The Republic of Cameroon. After serving as the Clinic Director/Dentist at the Yaounde Adventist Dental Clinic in West Africa he returned to the United States in 2006 and became an Assistant Professor with the Department of Educational Services at Loma Linda University School of Dentistry. Dr. Burtch currently practices at both the Faculty Dental Office in the Department of Dental Anesthesiology and at Loma Linda University Koppel Special Care Dentistry Center.

 

Dr. Choi

 

Eun Joo Choi, DDS

Dr. Choi graduated from Loma Linda University School of Dentistry in September 1996. She worked in private practice for over 15 years. She joined the Restorative dentistry department here at LLUSD in October of 2011. Dr. Choi became one of our dental practitioners in August of 2012.

 

Dr. Guo

 

Jing Guo, DDS

Jing Guo was born and raised China. She obtained her B.D.S and M.Sc from Shandong University in China, and graduated in 2015 with her PhD from the University of Southern California. Jing also received her endodontic certificate from University of Southern California. She is now working as an assistant professor in the LLUSD Department of Endodontics. Jing lives in Los Angeles, CA with her husband and enjoys cooking and jogging in her spare time.

 

Dr. Nam

 

Iris Nam, DDS

Dr. Nam graduated from Loma Linda University School of Dentistry in May 2010 with her DDS degree. Dr. Nam joined the teaching dental faculty at the school that same year and began with our dental team in December 2011.

 

Dr. Nick

 

Doyle Nick, DDS

Dr. Nick graduated with his DDS degree from Loma Linda University School of Dentistry in 1978 and finished his advanced education in prosthodontics and residency program in 1993. He became an Associate Professor with the Department of Restorative Dentistry in 1991 after practicing dentistry for over 25 years, and has been one of the dental practitioners in the Department of Dental Anesthesiology since 1993.

 

Dr. Okumura

 

Wesley Okumura, DDS

Dr. Okumura graduated with his DDS degree in 1994 from Loma Linda University School of Dentistry and earned his Pediatric Dentistry certificate in 2000. He became an assistant professor for the Pediatric Dentistry Clinic in 2001 and serves as one of our dental practitioners at the Koppel Special Care Dentistry Center.

 

Dr. Omar

 

Samah Omar, DDS

Dr. Omar graduated in 1999 with her dental degree from Jordan University of Science and Technology. She spent two years completing the International Dentistry Program at Loma Linda University School of Dentistry and went on to complete a two year residency in Pediatric Dentistry. Dr. Omar currently serves as one of the dental practitioners in the Department of Dental Anesthesiology.

 

Dr. Jino Park

 

Jino Park, DDS

Dr. Park graduated with his DDS degree in 2012 from Loma Linda University School of Dentistry. He has been practicing dentistry for special needs patients and young children under general anesthesia for years in private practice. He joined Koppel Special Care Dentistry Center in 2017.

 

Dr. Pereira

 

Valeria Pereira,DDS

Dr. Pereira graduated from dental school in 1985 from the Universidade Federal de Santa Catarina in Brazil. She completed her advanced education for International Graduates at New York University College of Dentistry in 1993 and finished her Pediatric Dentistry program in 1998. Dr. Pereira became an Assistant Professor for the Pediatric Dentistry Department at Loma Linda University School of Dentistry in 2001 and now serves as one of our dental practitioners at the Koppel Special Care Dentistry Center, as well as practicing pediatric dentistry part-time in both Riverside and Rancho Cucamonga.

 

Dr. Piedra

 

Isabell Piedra, DDS

Dr. Piedra graduated from the Universidad Del Valle in Columbia in 1990 with her DDS degree. She then completed her advanced education in Pediatric Dentistry at Tufts University in Boston, MA in 1994 and became a faculty member with the Loma Linda University School of Dentistry Department of Pediatric Dentistry in 1998. Dr. Piedra now serves as one of our dental practitioners at the Koppel Special Care Dentistry Center.

 

Dr. Poomprakobsri

 

Kiddee Poomprakobsri, DDS, MSD, MBA

Dr. Poomprakobsri graduated from Loma Linda University School of Dentistry in 2012 and finished his Advanced Education Program in Implant Dentistry in 2015. He joined LLUSD's Division of General Dentistry as assistant professor in 2015 and serves as one of our dental practitioners at the Koppel Special Care Dentistry Center.

 

Dr. Richards

 

Susan Richards, DDS

Dr. Richards graduated from Loma Linda University School of Dentistry in 1984 and earned her certificate in Oral Pathology from the University of Southern California School of Dentistry in 1987. She became a faculty member at Loma Linda University School of Dentistry Department of Oral Diagnosis, Radiology and Pathology in 1984 and serves as one of our dental practitioners at the Koppel Special Care Dentistry Center.

 

Dr. Riter

 

Holli Riter, DDS

Dr. Riter graduated from Loma Linda University School of Dentistry in 1998 and became an Assistant Professor for the Department of Restorative Dentistry in 2005, after practicing dentistry for seven years. She serves as one of our dental practitioners at the Koppel Special Care Dentistry Center.