Our Team

At Dr. Zak Family Dentistry, we assembled well-trained and highly credentialed dentists, assistants, and office staff to ensure you always get personalized, superior dental services within a budget that you can afford.

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

Meet Our Team

Dr. Ilya Zak, DDS

Dr. Ilya Zak, DDSDr. 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. Zak ensures that the dental care that is provided at Zak Dental offices is wholistic, comprehensive, and enhances patients’ overall wellness.

Alejandra R., Office Manager

Alejandra R., Office Manager

Dr. Howard Kopel, DDS

Dr. Howard Kopel, DDSDr. 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. He utilizes his keen understanding of comprehensive dental care to ensure that his treatment plans are optimized for the ultimate goal of enhancing patients’ wellness.  In his free time, Dr. Kopel loves to race fast cars, play tennis, and spend time with his family.

Dr. Charles Chung, DDS

Dr. Charles Chung, DDSDr. Charles Chung graduated from Loma Linda University’s School of Dentistry 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 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 patients.

Dr. Nima Aleagha, DDS

Dr. Nima Aleagha, DDSDr. Nima Aleagha graduated from the Azad University in 1994. He provides quality dental examinations for his patients, caring for adults and children in the practice. With over 25 years of experience, Dr. Aleagha provided treatment plans for thousands of patients over the years. Dr. Nima is fluent in Farsi as well as in English.

Dr. Crystal Mangat, DDS

Dr. Crystal Mangat, DDS

Dr. Consuelo Palacios, Exodontist

Dr. Consuelo Palacios, Exodontist

Dr. Stephen L. Robin, DDS, General Dentist

Dr. Stephen L. Robin, DDS, General DentistDr. Stephen Robin graduated the USC School of Dentistry in 1988. He earned his Fellowship in the Academy of General Dentistry in 1993. He is an Associate Clinical Professor at the USC School of Dentistry, part-time faculty with the USC Mobile Dental Clinic, and volunteers regularly in Ecuador. His father was a Dentist and his middle son is a Pediatric Dentist.

Dr. Robin enjoys the outdoors and spending time with his family and his dogs. As a Fellow of the Academy of General Dentistry, his extensive experience in the dental field is a true asset to the Zak Dental Family.

The Dr. Zak Dental 360 Degree quality Control Method

We don’t just talk the talk…we walk the walk when it comes to Quality Assurance!!!


We have a Wellness Doctor on staff at every one of our locations. The sole purpose of this Doctor is to understand your unique oral health needs, objectives, and budget. Once your Wellness Doctor understands your needs, he creates a customized treatment plan that is unique to you. Based on the treatments needed, the Wellness Doctor will build a clinical team consisting of a hygienist, treating dentist, and possible specialists to execute the agreed upon family dental plans.


There is always more than one provider working on your treatment plan to confirm the accuracy of your diagnosis.


We practice a team-based approach to dental care because dental care requires a vast array of skills and abilities. In nearly thirty years of practice, Dr. Zak has never met a true “Master of All Trades” dentist. That is why we have paired up with a team of specialists that include: periodontists, endodontists, prosthodontists, oral surgeons, and orthodontists to support our general team and step in for more complex procedures.


We have a 360-degree quality control protocol in place where at the end of your treatment your Wellness Doctor steps back in to check the quality of the completed work.