Our Team

Dr. Zak Downey Dental Care is proud to serve the Downey community

Dr. Zak Downey Dental Care is an office where patients can expect affordable, gentle, and long-lasting dental care. The dental team at this office is extremely experienced and knowledgeable, and are trained to make every one of your visits quick and painless. It is our motto that for dental care to be great, it must include patient education and preventative care; these aspects of your dental treatment are essential to maintaining excellent oral health for life.




Meet Our Dental Staff

The expert team of dentists and administrative staff at this office are committed to helping you attain the smile you’ve been dreaming of for years but never thought you could achieve. The personalized and effective care we provide is long-lasting and will be extremely beneficial to your long-term dental health. Every member of our staff is trained to handle every possible dental problem as well as dental office operation, and is committed to making your visits inexpensive and convenient. We use modern, efficient equipment and we pledge to use it with energy and care.

Dr_Ilya_ZakDr. Ilya Zak

Dr. Ilya Zak attended USC Dental School for a six-year long undergraduate and graduate program titled ADAPT; he received his degree in 1990. He then became a resident at White Memorial Hospital, specializing in TMJ/Pain Management, and because of this specialization, he is a qualified medical examiner for TMJ dysfunction. He also was a part-time professor at his alma mater, USC Dental School, and has been practicing in Simi Valley, Valencia, Agoura Hills, Downey, and Long Beach since 1994.

Dr_Howard_KopelDr. Howard Kopel, DDS

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

dr. shirashiDr. Ronald Shiraishi

Born and raised in California, Dr. Shiraishi attended UCLA for his undergraduate degree and Washington University for his dental degree. He has been working in the Downey office for over 25 years, and is proud to have treated generations of patients. Dr. Shiraishi has 29 years of experience under his belt, and has a commitment to improving his patients’ health.  He enjoys being outdoors and fishing.

Dr. Homayoon Bayrami, DDS

As a graduate in 2007 from the Azad University in Tehran, Dr. Bayrami worked for many private dental offices in Iran. In 2014 Dr. Bayrami received his U.S. D.D.S. from the University of Southern California. Dr. Bayrami was an award winning student at USC. He also volunteers his time to several southern California organizations, including the Children’s Dental Center of the Greater Los Angeles, and most currently the USC School of Dentistry.

Dr. Nadia Abazarnia

Dr. Nadia graduated from Carlo Davila University of Bucharest in 1993.  Dr. Nadia has been practicing in California for over 14 years. She brings her wealth of knowledge to our dental practice.  Dr. Abazarnia is fluent in English, Farsi, and Romanian.


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 Dental Care 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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