Our Team

At Dr. Zak Long Beach Dental Care our goal is to educate and help you achieve and maintain optimal dental health for life. We have an experienced and reliable team of Doctors and office staff that will guide you through each step of your oral care treatment.

On top of being specialists in family dentistry, at Dr. Zak Long Beach Dental Care, we also work with highly talented dental specialists in all other forms of oral health to make sure your mouth is in its best possible shape.


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. At Dr. Zak Long Beach Dental Care, our Wellness Doctor is there to understand your unique oral health needs, objectives, and budget. Once those needs and objectives are discovered, our Wellness Doctor creates a customized treatment plan that is unique to you. Based on your needs, the Wellness Doctor helps build a clinical team and possible specialists to execute the agreed upon family dental plans.
  2. To confirm the accuracy of your diagnosis, there is always more than one provider working on your treatment plan.
  3. We have a team-based approach to dental care because 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. Our 360-degree quality control protocol ensures that any treatment small or large gets checked off by your specialist and Wellness Doctor before it is considered completed.

Dr. Zak Dental Care has been serving the Long Beach community since 1978.

Our Dental Staff

Dr. Ilya Zak, DDS our teamDr. Ilya Zak, DDS

Dr. Ilya Zak completed his education in 1990 through the ADAPT 6-year undergraduate and graduate dental education program at USC Dental School. He was one of eight students in this prestigious program.  He then was a resident in the TMJ/Pain Management program at White Memorial Hospital after graduation and thereby became a qualified medical examiner for TMJ dysfunction. He also was a part-time professor at his alma mater, USC Dental School.  His patient centric approach ensures that the dental care that is delivered at our practices is patient centric and designed to enhance patients’ overall wellness.

Dr. Olge Karnakova, DDS, Our TeamDr. Olga Karnakova, DDS

Dr. Karnakova graduated from the Moscow Medical Stomatological Institute in 1991.  She worked for many years in Russia both as a dentist and as an instructor. In 2000 Dr. Karnakova passed the State of California Dental Board certification and has remained a doctor in good standing. Dr. Karnakova has continued working both as a  dentist and as an educator. Dr. Karnilova has a holistic view of patients and her comprehensive treatment plans are designed to enhance patients’ overall state of wellness.

Dr. Roshanak Momen (Roshi) Our TeamDr. Roshi, DDS

Dr. Roshanak Momen (Roshi) graduated in 2016 from Loma Linda University, School of Dentistry with an award for being a Teacher’s Assistant in Restorative Dentistry. She has her DDS degree from Azad University in 2009 as well. She is passionate about dentistry as she wanted to be a dentist since she was 7 years old. She speaks English and Farsi.

Our TeamDr. Kristen Miller, Orthodontist

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

Our TeamDr. Pedram Fakheri, Periodontist

Dr. Pedram Fakheri graduated with his DDS from the University of Medicine & Dentistry of New Jersey in 2008. Dr. Fakheri has been trained in all aspects of periodontics including dental implants, treatment of periodontal diseases, and periodontal bone regeneration.  In 2011 when he moved from East coast to West coast, he received the specialty certification in Periodontics from Loma Linda University. Dr. Pedram provides high quality dental care to all of his patients. Dr. Fakheri is fluent in English and Farsi.

Our TeamDr. William Olson, DDS

Dr. William Olson graduated from Loma Linda University in 1987 with his DDS degree. His entire family is in the medical field which is what made him become a dentist. His expertise is restorative and cosmetic work, and he wants seeing his patients smile after the work is done. It brings DR. Olson a huge satisfaction when he helps patients reach their ultimate goal when it comes to their smile.

Our TeamDr. Aiham Machhadani, Endodontist

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