Our Team

Dr. Zak Dental Care has been serving the community of Southern California since 1994.

Here at Dr. Zak Dental Care, we are dedicated to continuously improving and attaining the most efficient and up-to-date technology and techniques for our dental work, and we continue to team up with the most qualified professionals. We believe that it is our task to educate our patients and our community as a whole about proper oral health and effective ways of financing this goal. We continue to provide our patients with effective, all-encompassing, and affordable dental care.

Meet our Team

Our staff is extremely well-trained and skillful, and we are committed to providing enthusiastic and positive service to all our patients. All our team members are registered assistants, and the staff has had many years of experience in providing patients with superior care.

Dr_Ilya_ZakDr. Ilya Zak, D.D.S.

Dr. Ilya Zak attended USC Dental School, graduating in 1990. He was one of only eight unique students to complete the ADAPT program, an accelerated 6-year dental program that allows one to complete both undergraduate and graduate requirements. After graduation, he completed TMJ/Pain Management residency at White Memorial Hospital and became a qualified medical examiner for TMJ dysfunction in California. He is also a part-time clinical instructor at his alma mater, USC Dental School, and he practices in Simi Valley, Valencia, Agoura Hills, and Long Beach since 1994.

Dr.  Howard KopelDr. Howard Kopel, D.D.S.

Dr. Howard Kopel, DDS, attended USC School of Dentistry and has been working in the field for more than 3 decades. He has received excellent training in every dental field, and he has received numerous awards for excellence in oral cancer diagnosis. The Zak Dental Team is honored to have worked with Dr. Kopel for over a decade, and he is in charge of dental diagnosis as a managing doctor in our practice.

Dr. Charles ChungDr. Charles Chung, D.D.S.

Dr. Charles Chung, DDS, has been part of the Zak Dental team for more than a decade. He received his dental education at Loma Linda University’s School of Dentistry, graduating in 1999. While attending the school, he participated in many volunteer missions in Southern California and South America, mostly involving dental work and inner-city volunteering. Before joining us, he worked at several other practices. He is an American Dental Association and California Dental Association member. He always performs his work precisely and calmly, making him a popular choice among patients.

Dr._FatahiDr. Sepi Fatahi, DMD

Dr. Fatahi, DMD, attended UCLA for her undergraduate studies. She acted as a treatment coordinator for our team before earning her Doctor of Dental Medicine from University of Nevada Las Vegas as well as completing an internship at Case Western Reserve University in Oral and Maxillofacial Surgery. She works at Valencia, Agoura Hills, and Simi Valley.

Dr. ShirashiDr. Ronald Shiraishi

Dr. Shiraishi was born and raised in California, and attended UCLA for undergrad and Washington University for dental school. He has been working in our Downey office for more than 25 years, and he has treated generations of patients. Dr. Shiraishi has almost 3 decades of experience and is committed to improving his patients’ health. In his free time, he enjoys being outdoors and fishing.

Dr_Akhila_RaiDr. Akhila Rai

Dr. Akhila Rai attained her Doctor of Dental Surgery degree from the well-known Mangalore University. She has a vast amount of dental experience, and has served as a clinical instructor in endodontics at the Shetty Institute of Dental Sciences. She moved to the United States with her husband and two children from India 15 years ago. She received additional clinical instruction at UCLA and quickly attained her California Dental License.  Dr. Rai has been working with Dr. Zak Family Dentistry since 2001, where she provides her extensive knowledge and commitment to her work.

Dr.KarnakovaDr. Olga Karnakova, D.D.S.

Dr. Karnakova graduated from the Moscow Medical Stomatological Institute in 1991. Dr. Karnakova worked for many years in Moscow before moving to the United States where she has worked for over 18 years as a general Dentist and part time instructor for the Duggan Study Institute.
Dr. Olga Karnakova is fluent in English and Russian languages.

dr-amir-nooriDr. Amir Mehdi Noori-Esfansiari, DDS

Dr. Noori received his DDS Degree from the University of Southern California
in 2004, and he won several awards while in dental school, including an endodontic award in 2003 and an oral surgery award in 2004.
Dr. Noori has continued his training in comprehensive dentistry. He also volunteers his time to several organizations including the American Cancer Society, Juvenile Diabetes Foundation, and the USC School of Dentistry Emergency Clinic.

Dr. Ben  GellerDr. Benjamin Geller, Prosthodontist

Dr. Benjamin Geller graduated from Beverly Hills High School in Los Angeles. He earned his Bachelor degree in Molecular and Cellular Biology with a minor in Spanish at UC Davis University. Dr. Geller graduated with honors from UCSF dental school. He completed a three-year Residency in Prosthodontics at the University of Puerto Rico that included extensive training in implant prosthodontics as well as esthetic dentistry. Dr. Geller has a Master’s degree for his clinical research.

Dr. Armen Galustian, DDS

Dr. Galustian graduated from the Azad Tehran University of Medical Sciences, School of Dentistry, with his D.D.S in 2003. Dr. Armen worked in the Iranian Air-force Hospital and helped establish a new dental office. Since moving to California and receiving his California Dental License, Dr. Armen has volunteered his time with USC mobile dental geared towards providing free oral health care to underprivileged children in the L.A. area.

Dr. Homayoon Bayrami, DDS

Dr. Bayrami received his DDS from the University of Southern California in 2014 under the Advanced Standing Program for International Dentists. He had received in 2007 his degree from Azad University of Dentistry in Tehran. He has standing
memberships with the American Dental Association and with the USC Persian Dental Association. He has worked with several voluntary organizations, including the USC Mobile Clinic and the Union Rescue Mission Dental Clinic.

Dr. Nadia Abazarnia

Dr. Nadia is a Graduate of the Carlo Davila University of Bucharest in 1993. She is Fluent in English, Farsi, and Romanian. Dr Nadia has been practicing in California for over 14 years. She brings her wealth of knowledge to our offices.

KatnikDr. Richard D. Katnik, DDS

Dr. Richard Katnik attended Ohio State University, graduating in 1969. At a very young age his dream was to become a dentist and that is how he pursued his career. Having 48 years of dental experience, his passion is to take care of people’s dental problems and deliver great smiles. One fun fact about him is that in his spare time he writes screenplays for movies.

Dr.Olson.jpgDr. William Olson, DDS

Dr. William Olson attended Loma Linda University, graduating in 1987. His entire family is in the medical field which was what made him become a dentist. His passion is doing cosmetic work and seeing his patients smile after the work is done. It brings him a huge satisfaction when he helps patients reach their ultimate goal when it comes to their smile. One fun fact about him is that he likes to go hiking, skiing and loves dogs.

GonzalezDr. David Gonzalez, DDS

Dr. David Gonzalez attended Marquette University School of Dentistry, graduating in 1990. His passion is to help people feel good about their smiles and to help them overcome their fear of the dentist. He loves to make his patient’s experience as painless as possible. He became a dentist here in San Diego after visiting and loving the weather, the scenery, the food and the people. One fun fact about him is that he loves to restore Japanese cars to place them in shows and he loves horses and dogs.

Dr. Yamil Reeves, DDS

Dr. Yamil Reeves attended UPR Medical Sciences Campus school of Dentistry, graduating in 2014. Prior to becoming a dentist he was a hygienist for 10 years which was what motivated him to further his studies and become a Dentist. His passion is to help patients not feel pain and get them treated to give them healthy smiles. One fun fact about him is that he loves to play baseball on the weekends as well as spend time with his wife and children. He loves dancing and traveling with his family to see new places.