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Meet The Doctors

Board Certified*


Dr. Andrea M. Mattia*

Dr. Andrea M. Mattia opened her practice in Old Tappan, New Jersey in 2004, after practicing for more than six years in Tappan, New York.

She is a graduate of the New York University College of Dentistry, with four years of post-graduate training. She completed three years at the Montefiore Medical Center, including two years in the department of pediatric dentistry. In addition, Dr. Mattia completed a fellowship at the Rose Kennedy Dental Center, specializing in the treatment of children with special needs.

Dr. Mattia is board certified by the American Academy of Pediatric Dentistry, and has extensive training and practice in all phases including preventive, restorative, minor orthodontics, esthetic, and hospital dentistry. She currently has staff privileges at Montefiore Nyack Hospital in Nyack, New York.

Dr. Mattia is an active member of the Academy of Pediatric Dentistry and is a diplomat of the American Board of Pediatric Dentistry.

Dr. Mattia lives with her husband and three children in Northern New Jersey. She volunteers at her children’s school and works on various committees throughout the school year. She is also an active member at her local church. She loves the beach, long walks with her dog, and spending time with her family.

Specialty permit # 5558



Dr. Anushia Sivendran*

Dr. Sivendran received her BA at Gettysburg College and graduated from the University of Pennsylvania with her degree in Dental Medicine. She completed her general dentistry residency at Lehigh Valley Health Network and practiced for more than two years. She then decided to pursue her passion for pediatric dentistry and went on to complete her pediatric dentistry training at Montefiore Medical Center.

Dr. Sivendran is board certified by the American Academy of Pediatric Dentistry. She is an active member of the American Dental Association and the Academy of Pediatric Dentistry.

Dr Sivendran is an exceptional practitioner of Pediatric Dentistry who truly enjoys working with children and their families to ensure a lifetime of healthy smiles.

Dr. Sivendran resides in Rockland County New York with her husband and two daughters.

Specialty Permit # 6304



Dr. Kellyann Metz

Dr. Metz graduated from Fairleigh Dickinson with a degree in Dental Medicine. She brings over 25 years of experience to our office. She will be offering general dentistry for all adults and our graduated patients over the age of 21. That means your kids can stay here forever!

Dr. Metz is a very professional and compassionate dentist and is a perfect fit for our growing practice. She will see to all your needs, including TEETH WHITENING.

Dr. Metz loves the Jersey shore and has a real passion for anything Disney. She enjoys any and all moments spent with her husband, daughter, dog, and cat!



Dr. Sarah Kaplan

Dr. Sarah Kaplan is thrilled to be practicing orthodontics near her hometown in Rockland County, New York. After receiving her bachelor's degree in Chemistry and Architecture at Smith College, Dr. Kaplan completed her DDS degree at SUNY University at Buffalo. She then continued her studies at SUNY University at Buffalo for orthodontic residency, where she was the president of her class and earned a post graduate Certificate of Advanced Study in Orthodontics and a Masters of Science in Orthodontics for her graduate research. Her research on self-report of waking state oral parafunctional behaviors was published in the Journal of Oral Facial Pain and Headache in 2016. Dr. Kaplan is Diplomat of the American Board of Orthodontics, and member of several orthodontic associations including the American Association of Orthodontists and Northeast Society of Orthodontists.

In her free time, Dr. Kaplan enjoys running, trying new foods and restaurants, and traveling. At home, Dr. Kaplan enjoys cooking and spending quality time with her husband, son, and two cats. Dr. Kaplan strives to try to have one new adventure (big or small!) each week.

Dr. Kaplan’s main goal is to give you the smile you have always wanted and deserve. She knows, first hand, that the visible change of one’s smile, wrought by wearing braces, can allow one’s inner personality to outwardly shine. Dr. Kaplan looks forward to connecting with you and your loved ones in our office!

Specialty Permit # 07016



Dr. Katerina Mlejnkova

Dr. Katerina Mlejnkova, or Dr. Katie to her patients, was raised in upstate New York where she received her bachelor's degree at the University of Rochester. Following her dental education at NYU College of Dentistry, she completed her specialty training in pediatric dentistry at Montefiore Medical Center.

Armed with up-to-date knowledge and techniques in her profession, she is confident in her ability to provide your child with the dental care they need. Her main goal is to create a comfortable, communicative, and truly joyful experience for you and your child, and with her upbeat personality, Dr. Katie can’t wait to do just that!

In her free time, Dr. Katie enjoys spending time with her ever expanding family, her friends, and her cat Roxy. She loves to run and race as part of the New York Road Runners, as well as traveling to experience the nature, hiking, and (most importantly) food that different places have to offer!

Specialty Permit # 06876


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8:00 am-6:00 pm


8:00 am-7:00 pm


9:00 am-6:00 pm


8:00 am-6:00 pm


9:00 am-6:00 pm


8:00 am-2:00 pm