Meet the Doctors

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:

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:

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.

Timothy MacLaga, DDS

Dr. Timothy MacLaga has always wanted to be a dentist since the age 7 when he “extracted” his first tooth (on himself, of course—he did not yet have a license). His passion for dentistry shows in his enthusiasm, thoroughness, and gentle touch. His patients know that they will be well cared for.

When Dr. MacLaga is not improving the dental health of those around him, he occupies his time with a multitude of hobbies. He is a jack of all trade and master of many. He is a true Renaissance man. When you are in the office, ask him about the beer he is brewing in his backyard or the meal he will be preparing for his lovely wife, Jenna. He is most famous for his outrageous award-winning Halloween costumes! Come by around Halloween and see what he comes up with next.

He attended the University of Delaware for a Biological Science degree and a minor in Chemistry. He then went on to the University of Medicine and Dentistry of New Jersey to fulfill his lifelong dream of becoming a dentist. He completed his General Practice Residency at Woodhull Hospital in Brooklyn, where he became proficient in extractions and endodontics.

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.

Vasso Ziotis, DDS

Dr. Vasso Ziotis is a specialist in Dentofacial Orthopedics and Orthodontics. She completed her Orthodontic training at the Montefiore Medical Center in New York. Dr. Vasso Ziotis D.D.S. is a native New Yorker, born and raised in New York City. She received her Bachelor of Science Degree in Biology from SUNY at Birmingham, NY. She Attended SUNY at Stony Brook School of Dental Medicine. She Received Her Doctorate Degree in Doctor of Dental Surgery, where she graduated at the top of her class and was inducted into Omicron Kappa Upsilon, the National Dental Honor Society. Dr. Ziotis is a Member of the American Association of Orthodontists, the American Academy of Pediatric Dentistry, the American Dental Association, and the New York County Dental Society.

Dr. Vasso treats young children (typically starting at age 7), teens, and adults alike with a gentle touch and a great sense of humor, immediately putting every patient at ease. She is very passionate about Orthodontics and her primary goal is to provide each patient with tailored, individualized treatment to achieve a beautiful, natural smile and ideal bite. She always takes the time to give each patient the care and attention he or she needs. She resides in New York with her husband and her children. She enjoys visiting family and friends in New York City, working out, or trying a new restaurant.