Meet Our TeamMeet The Doctors


Will Fernyhough, DDS, MSD

Dr. Fernyhough is a recognized authority on periodontal and dental implant therapy. Throughout his years of training and private practice, he has developed an effective approach in serving his patients at the highest level of professionalism.

Dr. Fernyhough earned his undergraduate and dental graduate degrees from the University of Washington in Seattle. He then received specialty training at the University of North Carolina School of Dentistry, and there earned his Certificate in Periodontics in 1986. Unlike other periodontists, he then went on to earn his Master of Science in Dentistry in 1987. Read More...

Issa Dkeidek, DDS, MSD

Dr. Issa Dkeidek joined Premier Periodontics after residing in the northeast for the better part of his educational career. He received his bachelors in Biology from the University of Massachusetts. Continuing in his educational endeavors; he graduated from The University at Buffalo School of Dental Medicine in 2006 receiving his degree of doctor in dental surgery (DDS). He then went on to complete a one-year general practice residency at Coler-Goldwater Specialty Hospital in New York, NY. Read More...

Samira Toloue, DDS, MSD

Dr. Samira Toloue is a board certified diplomat of the American Board of Periodontology.  She earned her doctor of dental surgery (DDS) degree in her hometown at The University at Buffalo, School of Dental Medicine.   She then attended the Indiana University; School of Dentistry to obtain her Periodontics certification, Master’s degree in Dentistry (MSD) and minor in Oral Pathology.  Dr. Toloue practiced in Austin, Texas for 3 years before relocating to Washington with her family. Read More...

Allan Wattimena, DDS, MS

Dr. Allan Wattimena moved to Seattle from Columbus, Ohio. He and his wife fell in love with Seattle after visiting the city a few years ago, and decided to move here and call the Redmond community home. Dr. Wattimena was born and raised in Toronto, Canada where he received his Bachelor’s degree at the University of Toronto. He completed his dental degree at the University of Minnesota and received his postgraduate training in Periodontics at The Ohio State University. On top of receiving advanced training in periodontics, he has gained further experience by completing rotations at the Nationwide Children’s Hospital and volunteering at community dental clinics. Read More...

Eirleen Hyun, DMD, MS

Dr. Eirleen Hyun is a Diplomate of the American Board of Periodontology. She earned her dental degree (DMD) at Tuft University, Boston. She then joined the US Air Force as an active duty officer and pursued an Advanced Education in General Dentistry (AEGD) in Washington, DC. She was then stationed in Korea and Germany where she provided care for the active duty personnel before returning to the motherland in San Antonio, TX to undertake her specialty training in Periodontics and earn her Master of Science (MS) degree in Dental Sciences, Periodontics.


Guy Huynh-Ba, DDS, Dr. Med. Dent., MS

Dr. Guy Huynh-Ba grew up in Lausanne, Switzerland where he attended dental school and worked as a general practitioner for a few years, before obtaining specialty training in periodontics. To fulfill his passion for teaching, Dr. Huynh-Ba accepted a faculty position for a year at the in University of Connecticut before going back to University of Bern, Switzerland to teach for a few years.  As the opportunity to join the world-renowned periodontics program at the in University of Texas Health Science Center San Antonio (UTHSCSA) presented itself, Dr. Huynh-Ba decided to give a few years in teaching in the US again before going back home for good.  As a few years turned into a decade, he received his second periodontics degree from UTHSCSA and was promoted to full Professor.  He recently got married and decided to relocate together with his wife to her hometown Seattle.  Growing up close to the Alps, skiing is one of his passions, but what Dr. Huynh-Ba really loves is playing tennis with his twin brother who still resides in Lausanne, Switzerland. 


Theresa E. Madden, DDS, MS, PhD

Dr. Madden incorporates her philosophy in practice by always offering kindness and exquisite clinical skills.


MS & PhD in Microbiology & Immunology - University of Rochester
Periodontics Certificate - Eastman Dental Center
DDS- University of Maryland
BA in Psychology – University of Baltimore
AA in Dental Hygiene-Allegany College of Maryland


Najib Ghadri DDS, MDS

My principal roll is to help patients be aware of their periodontal and dental health problems and work together to accomplish a desired goal of optimal oral and overall wellbeing. Clinical and Basic Science Research has made the field of Periodontics and Dental Implant Surgery a constantly changing specialty. Staying on the leading edge of new technologies will allow for the best possible care to be predictability achieved.