Meet Our Dentists
Darren Tong, DDS
Dr. Darren Tong completed his Aesthetic Advantage Certification at New York University. He received his D.D.S. degree from Columbia University School of Dental & Oral Surgery, where he graduated in the top 10% of his class. He has received advanced training in Dental Implants, Cosmetic Dentistry, Pediatric Dentistry, Orthodontics, Gum Disease, Endodontics, Patient Management, Full Mouth Reconstruction, and Occlusion.
His professional affiliations and awards include:
- Member: American Dental Association, New Jersey Dental Association, Academy of General Dentistry, Bergen County Dental Society, Bergen County Implant Study Group,American Academy of Pediatric Dentistry, and International Congress of Oral Implantologists
- Awards: Excellence in Restorative Dentistry Award - Operative Department, Columbia University; Excellence in Prosthetics Award - Teledyne Hanau Corporation; Appreciation Award - The Filipino Reporter Newspaper; Lecturer - speaks to nursery school children about establishing good dental habits.
Mariliza LaCap, DDS
Dr. Mariliza LaCap completed her Aesthetic Advantage Certification at New York University. She received her D.D.S. degree from Columbia University School of Dental & Oral Surgery, where she graduated in the top 10% of her class. She completed her residency at Englewood Hospital. She has received advanced training in Dental Implants, Cosmetic Dentistry, Orthodontics, Full-Face Orthodontics, Invisalign™, Endodontics, Gum Disease, Patient Management, and Restoration.
Her professional affiliations and awards include:
- Member: American Dental Association, New Jersey Dental Association, Academy of General Dentistry, Bergen County Dental Society, Bergen County Implant Study Group, International Congress of Oral Implantologists, and American College of Implantologists
- Awards: Excellence in Orthodontic Award - American Association of Orthodontics; Excellence in Periodontics Award - Northeastern Society of Periodontists; Appreciation Award - The Filipino Reporter Newspaper; Award of Distinction - CM Eastern Seaboard USA
Dr. Tong and Dr. LaCap first met in dental school at Columbia University School of Dental and Oral Surgery. In fact, they were anatomy lab partners. Was it love at first sight? You’ll have to ask them.
After over 19 years of working together as dentists, they still share the same passion for creating beautiful and healthy smiles. Their shared vision for Washington Dental Associates and Smile More Dentistry has materialized into an exceptional dental experience for their patients. Each is a unique dental office where you will feel comfortable, well taken care of and safe.
Another passion they share together is their love for each other and their five children. Their weekends are spent watching their sons’ soccer or baseball games - they have never missed one yet. When they are not in the office working, you can find them on the slopes skiing or the Hudson River boating.
Nancy Gergis, DDS
Dr. Nancy Gergis graduated in 2001, obtaining her BDS degree from one of the top Schools of Dentistry in the Middle East. After working a short time at her Family Dental Center with both parents and her brother in the Middle East, she was selected to complete a multi-disciplinary hospital residency at Alexandria Research Dental Center ARDC. This residency provided her with advanced training in all the specialties of dentistry including treatment of medically compromised patients.
Dr. Gergis then moved to the United States and worked as a Dental instructor for dental assistants, then decided to have her second degree as DDS from New York University College of Dentistry. After graduation she immediately started to work as an associate dentist and currently at the Washington Dental Associates. Dr. Gergis is a member of the American Dental Association ADA and the New Jersey Dental Association NJDA.
Dr. Gergis' diverse background has given her a better understanding of our patients, their fears and their treatment. Patients often come to our office feeling anxious about their dental visit from previous experiences, but with confidence she eases those fears and provides gentle and an advanced dental experience. She enjoys the challenge of providing family dentistry in a comfortable, friendly and pleasant environment.
Dr. Gergis is heavily involved with the raising of her two children. They all enjoy traveling and doing outdoor activities.
Michael Davidson, DMD
Dr. Michael Davidson received his Masters in Oral Biology at New York University. He received his Doctor of Medicine Degree from University of Pennsylvania. He is currently in an intensive Implant training program at NYU.
"I love being a dentist because it allows me to establish impactful relationships with my patients. It also allows me to put my hands to use crafting gorgeous smiles and helping people change their lives by rebuilding what they have lost. Washington dental Associates is just a wonderful and ideal environment to provide dentistry at an exceptionally high level."
As with all the dentists that work at Washington Dental Associates, he is gentle and thoughtful. His expertise in offering comprehensive dental treatment to patients makes him a favorite to many patients. He will easily go the extra mile for his patients.
During his spare time he can be found exploring cities with his fiancée for the best food, cycling to stay in shape and brushing up on his golf game.
Steven Reff, DDS
Dr. Steven Reff uses his extensive experience to provide the highest level of surgical care in a gentle, compassionate manner. He received his D.D.S. (Doctor of Dental Surgery) degree from the University of Maryland School of Dentistry. While there, he graduated at the top of his class and was honored by his faculty by being inducted into the Gamma Pi Delta Prosthodontic Honors Society. He also served as President on a variety of committees including the Dental School’s Global Outreach Program and Oral and Maxillofacial Surgery study group.
Following dental school, Dr. Reff completed his cosmetic and surgical-based training at Columbia University College of Dental Medicine/New York Presbyterian Hospital. Upon completing his training Dr. Reff began treating patients in private practice. He was also invited to take a position at Columbia University College of Dental Medicine teaching postgraduate candidates and future dentists.
Dr. Reff is a Fellow of the International Congress of Oral Implantologists, a credential he received after completing three years of intensive, hands-on oral implantology training.
Dr. Reff is proud to be joining Dr.’s LaCap and Tong at their offices in Tappan and Bergenfield. When he is not practicing dentistry or attending professional obligations, he enjoys hiking with his Yellow Lab, fly fishing, and relaxing with his wife Allison and their two children, Mackenzie and Preston.
Jonathan Mendia, DMD
Dr. Mendia is our Dental Anesthesiologist. He is the go-to person when you want to sleep through your dental procedures. With his help, you can come in with your dental problems and wake up within hours with all your dental problems solved. You will wake up with the smile of your dreams!
Dr. Mendia received his Doctor of Dental Medicine from the University of Pittsburgh School Of Medicine. He is an Associate Clinical Professor at the Rutgers University School of Dental Medicine, where he teaches and provides sedation services to the Periodontics and Oral & Maxillofacial Surgery departments.
Dr. Mendia spends his free time with his wife and newborn son. He is a new dad and has taken the role very seriously. He is a member of the American Dental Society of Anesthesiology, American Society of Dentists Anesthesiologists, New Jersey Dental Association, Bergen County Dental Society, and American Dental Association.
Jonathan Gellis, DDS
Dr. Jonathan Gellis earned a B.A. in Advertising and a minor in International Studies at Pennsylvania State University before continuing on to receive a Master’s in Biomedical Sciences at Rutgers University. Subsequently, he attended New York University College of Dentistry receiving his Doctor of Dental Surgery. He trained for an additional post-graduate year at the East Orange Veteran’s Administration Medical Center completing a General Practice Residency in Dentistry.
He is committed to staying current with the latest technologies and advances in dentistry by attending continuing education courses. Patients love how he explains dental procedures in a way they can understand. He is gentle and thorough. Dr. Gellis is dedicated to understanding the needs and desires of each patient.
When Dr. Gellis is not providing dental care, he enjoys playing ice hockey, going on hikes with his wife, baby girl and dog. He loves traveling and trying new restaurants.