Our Team

Meet our Team

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

At Dr. Zak Dental Care, we are dedicated to continuously teaming up with the most qualified dental professionals and specialists.

Leadership Support Team

Dr. Ilya Zak, DDS, CEO, Founder

Dr. Ilya Zak, DDS, CEO, FounderDr. 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.

Sonya Zak, COO

Sonya Zak, COOSonya (Sophia) Zak joined the Zak Dental team in 2010 following her graduation from Stanford Graduate School of Business with a PhD in Management Sciences. She also received a dual BA/BS degree from UC Berkeley in Business Administration and Psychology in 2004. She currently oversees all non clinical operational support functions of Zak Dental including Revenue Cycle Management, Patient Journey, Marketing & Team Building and Business Intelligence. She is passionate about utilizing her deep understanding of culture and social behavior in optimizing our Patients’ Journey and organically developing and nurturing our Zak Dental.

Edwin J. Olivas, Director of Operations

Edwin J. Olivas, Director of Operations

Bianca K., Practice Development & IT Specialist

Bianca K., Practice Development & IT Specialist

Jerilee M., Virtual Wellness32 Team Lead

Jerilee M., Virtual Wellness32 Team Lead

Shanttel R., Regional Manager

Shanttel R., Regional Manager

Suelem G., Regional Manager

Suelem G., Regional Manager

Alejandra R., Regional Manager

Alejandra R., Regional Manager

Aygul, Accounts Payable Analyst

Aygul, Accounts Payable Analyst

Maeva R., Manager of Recruiting & Team Building

Maeva R., Manager of Recruiting & Team Building

Our Doctors

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. William Olson, DDS

Dr. William Olson, DDSDr. William Olson attended Loma Linda University, graduating in 1987. His entire family is in the medical field which is what made him become a dentist. His passion is doing restorative and 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.

Dr. Paul, DDS

Dr. Paul, DDSDr. Paul graduated from USC Dental School. He has  more than 15 years of experience in the dental field. Dr. Paul has been treatment planning and treating more than 50,000 patients. Dr. Paul’s emphasis on the patients’ overall well being and his ability to prioritize treatment plans to any budget has allowed his to enhance the oral health of nearly all patients that he sees irrespective of their financial challenges.

Dr. Tuyet Mai Phan

Dr. Tuyet Mai PhanDr. Mai Phan initially received her Bachelor’s degree in Electrical Engineering from the University of California, Irvine.  Then, Dr. Mai Phan went on to obtain her DDS from USC. She is a gentle individual by nature, and strives to provide great services and care to her patients. Dr. Mai Phan tries to complete her work in a fashion she truly stands behind. Her expertise as a dentist is laser assisted periodontal management, hygiene cosmetic fillings, veneers, inlay/onlays, teeth whitening. In her spare time, D. Mai enjoys books, traveling and spending time with her family.

Dr. Kristen Miller, Orthodontist

Dr. Kristen Miller, OrthodontistDr. Kristen Miller is graduated from UCLA with general dental education and UCSF with her orthodontist training. She graduated the class as top 5% students. She  was also the Vice President of her dental school class. Dr. Miller participated in the UCSF mobile clinic. She is fluent in Spanish.

Dr. Pedram Fakheri, Periodontist

Dr. Pedram Fakheri, PeriodontistDr. Pedram Fakheri is proficiently trained in all aspects of periodontics including dental implants, non-surgical and surgical treatment of periodontal diseases, and periodontal bone regeneration. He graduated with his DDS from the University of Medicine & Dentistry of New Jersey in 2008. Moving from East to West coast, he then received specialty certification in Periodontics from Loma Linda University in 2011. In addition to providing high quality care to all of his patients, Dr. Fakheri is fluent in English and Farsi.

Dr. Aiham Machhadani, Endodontist

Dr. Aiham Machhadani, EndodontistDr. Aiham Machhadani graduated from Damascus University in Syria in 1999. He then continued his education at California's Dr. Duggan Study Institute. Dr. Machhadani then continued his education at Columbia University, earning his specialty certification in Endodontics in 1999. For nearly 20 years, Dr. Machhadani has serviced patients in southern California. In his spare time, Dr. Machhadani lives an active life playing soccer and tennis.

Dr. Matthew Durschlag, Orthodontist

Dr. Matthew Durschlag, OrthodontistHaving served as a Navy dental officer in Okinawa, Japan, Dr. Durschlag has provided comprehensive and individualized dental services across the globe.  Graduate of Loma Linda University, he was granted his Specialty Certificate in Orthodontics and Dentofacial orthopedics.  On weekends, he enjoys staying active - playing hockey, golfing, skiing, and fishing!  With roots in New York and San Diego, Dr. Durschlag is thrilled to provide you with quality results and nothing but the best of care.

Dr. Consuelo Palacios, Exodontist

Dr. Consuelo Palacios, Exodontist

Dr. Crystal Mangat, DDS

Dr. Crystal Mangat, DDS

Dr. Mehran Yazdi, Endodontist

Dr. Mehran Yazdi, Exodontist

Dr. Kenneth Coddington, DDS

Dr. Kenneth Coddington, DDS

Dr. Michael Gavin, Endodontist

Dr. Michael Gavin, Endodontist

Dr. Mark Riedler, DDS, General Dentist

Dr. Mark Riedler, DDS, General DentistDr. Mark Riedler was born and raised in San Diego and graduated from USC Dental School in 1979. Thereafter, he practiced over two years in a county school dental clinic in northern Switzerland and one year in the adult dental clinic affiliated with the University in Lausanne, Switzerland. He purchased his own practice in 1984 which is now part of Dr. Zak Dental Care, and has since provided the full range of dentistry. His professional dental philosophy has been to help patients achieve and maintain their dental health through regular dental visits. Helping keep his patients healthy has been his greatest satisfaction professionally.

Dr. Riedler has been married to his beautiful college sweetheart for 44 years. He has three grown children, all happy and successful in their professional careers, and three grandchildren. Dr. Riedler's family interests have always included traveling and photography. He also rides bikes with his brothers weekly since 1973 and is proud to have ridden to the top of Haleakala volcano on Maui at the age of 62. Since 1983, Dr. Riedler and his two brothers play racquetball weekly. Lastly, he is a ‘plant nut’ and has taken plant expeditions to Madagascar and South Africa.

Dr. Taoheed Johnson, Endodontist

Dr. Taoheed Johnson, Endodontist

Dr. Schaeffer, DDS, General Dentist

Dr. Schaeffer, DDS, General Dentist

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.

Dr. Boris Zak, DDS

Dr. Boris Zak, DDSBoris Zak graduated from Moscow Institute of Stomatology in 1965 and practiced as a prosthodontist in Moscow for over 10 years. In the late 1970's he began practicing dentistry in the United States. He fulfilled his dream of opening a family practice with his son in 1994 when they opened the first office in Simi Valley. In his 47 years of practicing dentistry, Dr. Boris Zak always believed that everyone deserves quality dental care, and is committed to make dentistry more affordable to his patients.

Dr. Karina Palillo, DDS

Dr. Karina Palillo, DDS

Dr. Essence Page, DDS

Dr. Essence Page, DDS

Dr. Toral Pandya, DDS, Virtual Wellness Doctor

Dr. Toral Pandya, DDS, Virtual Wellness Doctor

Clinical Team Leads

Julia G., Clinical Team Lead

Julia G., Clinical Team LeadI've dedicated the past 18 years to working with our patients here at Zak Dental. My experience extends from managing our amazing and talented front staff team, but also our incredible clinical staff. I am clinically trained as a Registered Dental Assistant (RDA), having attending the Dental Professionals of California; so I have a true clinical understanding of your dental needs.
The most rewarding part of working in the field is in the satisfaction of helping our patients transform their smile into their DREAM smile! I will be here to help you every step of the way. When I'm not helping our patients smile, I enjoy spending time with my family and hiking.

Shirley L., Clinical Team Lead

Shirley L., Clinical Team LeadMy name is Shirley and I have spent the past 24 years serving others in the dental field. I love people and enjoy working with others. I have hands on experience with patients in both the back office as a dental assistant, as well as all aspects of front office administration, including insurance billing and coordinating treatment. I enjoy helping others find the best way to move forward with the exceptional care they deserve. I have dedicated my efforts to making sure our patients receive quality, personalized care and are comfortable at all times. I enjoy spending time with my grown children and grandchildren as often as possible, and of course we cannot forget our fur babies, who are also an essential part of our family and are involved in many outdoor family activities. I look forward to continuing my service to others!

Debbie Garcia, Clinical Team Lead

Debbie Garcia, Clinical Team Lead

Jennifer Villarroel, Clinical Team Lead

Jennifer Villarroel, Clinical Team Lead

Saul Mejia, Clinical Team Lead

Saul Mejia, Clinical Team Lead

Crystal Zavalza, Clinical Team Lead

Crystal Zavalza, Clinical Team Lead

Julia Gomez, Clinical Team Lead

Julia Gomez, Clinical Team Lead

Angie Orozco, Clinical Team Lead

Angie Orozco, Clinical Team Lead

Ignacio Robles III, Clinical Team Lead

Ignacio Robles III, Clinical Team LeadMy name is Ignacio Robles III, and I am the office manager for Dr. Zak Dental Care and Orthodontics in Santa Barbara. Originally from Orange County, I have worked in the dental field for almost 20 years. Having served 5 years in the United States Marine Corps, I have traveled to many different parts of the world. I decided to get back into dentistry after completing two years of college in Long Beach, CA. I started as a sterilization technician at the age of 17; from the very first day, I have always enjoyed working in the dental field. I’ve been in the dental office almost my entire life! My mother also worked in dentistry and brought me for regular visits to her office as a child. Being around dentistry became second nature, so it only made sense that I pursue this as a career. I have a family of 12, including my two boys, my daughter, five stepdaughters and three grand kids. I enjoy long walks at the beach and practicing my military training casually at the shooting range. I am looking forward to meeting you and helping with all your dental needs at the Santa Barbara office!

Itzel Romero, Clinical Team Lead

Itzel Romero, Clinical Team Lead

The Zak Dental 360 Degree Quality Control Method:

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

1.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.
2.There is always more than one provider working on your treatment plan to confirm the accuracy of your diagnosis.
3.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.
4.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.