Our Team

Dr. Zak Family Dentistry is serving the Simi Valley community since 1996

At Dr. Zak Family Dentistry, we assembled well-trained and highly credentialed dentists and competent and caring dental assistants whose standards of quality in dental care enable us to provide the most personalized, superior dental services. We offer comprehensive treatment and use restorative dentistry to help you achieve a beautiful healthy smile. We also work diligently to make periodontal, orthodontic, endodontic, and surgical dental services affordable for all our patients.


Our Dentists and Dental Staff

Our experienced dentists and well-trained assistants make every effort to educate our patents on their dental health, treatment options, and proper oral hygiene techniques. We promise to provide our patients with a caring and attentive staff, an enthusiastic attitude, and state-of-the-art dental care, complete with exceptional comfort and a welcoming atmosphere.

Dr_Ilya_ZakDr. Ilya Zak

Dr. Ilya Zak graduated from USC Dental School in 1990 as one of eight students who completed their undergraduate and graduate training through ADAPT, a six-year dental program.  Post-graduation, he was in a TMJ/ Pain Management residency at White Memorial Hospital.  He then became a qualified medical examiner for TMJ dysfunction in California. He also worked as a part-time clinical instructor at USC Dental School and has been practicing in Simi Valley, Valencia, Agoura Hills, Downey, and Long Beach since 1994.

Dr_Howard_KopelDr. Howard Kopel

Dr. Howard Kopel, DDS, was educated at USC School of Dentistry and has over three decades of experience in the field.  He is well-trained in every dental field, and has received many awards for excellence in diagnosis of oral cancers. The rest of the Dr. Zak Family Dentistry team are honored to be working with Dr. Kopel for over a decade, and he holds the position of dental diagnosis and managing doctor in our practice.

Dr_Charles_ChungDr. Charles Chung

Dr. Charles Chung, DDS, has been working with our team for over a decade. He attended Loma Linda University’s School of Dentistry and graduated in 1999. While there, he went on many volunteer missions in southern California and South America that involved dental work and inner-city volunteering. He worked at several other dental offices before becoming part of our team. He is a member of the American Dental Association and California Dental Association. His work is always precise and performed calmly, making him very popular with our patients.

Dr_Akhila_RaiDr. Akhila Rai

Dr. Akhila Rai attended the world-renowned Mangalore University in India where she received her Doctor of Dental Surgery Degree in 1992.  She has an enormous amount of clinical experience and was a clinical instructor of endodontics at the Shetty Institute of Dental Sciences.  She then moved to America in 2000 with her husband and children, where she attended UCLA for clinical instruction.  Dr. Rai received her California Dental License in 2001 and has been part of our team since then. Her extensive experience and commitment to her patients are huge assets to our team

Dr._FatahiDr. Sepi Fatahi, DMD

Dr. Fatahi attended UCLA for her undergraduate studies. She worked as a treatment coordinator for our team before earning her Doctor of Dental Medicine from University of Nevada Las Vegas.  Dr. Sepi  completed an internship at Case Western Reserve University in Oral and Maxillofacial Surgery.  She works at Valencia and Simi Valley dental offices.

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

With an early interest in medicine, Dr. Karnakova received her first patent in 1986. She continued her studies at the Moscow Medical Stomatological Institute and graduated in 1991. She worked in Moscow for many years as both a full time dentist and as a part time instructor before coming to the United States and continuing her work as a dentist. Dr. Karnakova brings a wealth of knowledge to our offices. She is fluent in English and Russian languages.


Sign up to get a Complimentary Cleaning

We know that you have many options when choosing dental care for you and your family.

To prove to you that Dr. Zak Family Dentistry is right for you, we invite you to experience our dental care first hand by receiving your first Prophylaxis Dental Cleaning (ADA Code D1110) on us.


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