216 N Washington Ave
Dunellen, NJ 08812
ph. 732.968.4800
8 Shunpike Rd
Madison, NJ 07940
ph. 973.377.0900
ph. 732.968.4800

Meet The Staff

At New Smile Orthodontics, you will find a unique environment that combines the highest level of professionalism with a warm and welcoming feel. Our staff is extremely well trained in treating the most straight forward of cases to the most complex, including those that require prosthetic restorations and orthognathic surgery. Each member of our team attends continuing education classes every year to stay on top of the latest developments and technology. Our goal is that every patient be thrilled with their new smile.

Dr. Castagna's staff at New Smile Orthodontics
Sadie at New Smile Orthodontics


Sadie has over 10 years of experience in medical office management and client services. She joined the New Smile Orthodontics team in 2014 and helps manage the Dunellen office. Sadie enjoys ensuring each client has an exceptional experience at New Smile and is dedicated to helping patients with any issues.

Outside of the office, Sadie is a caring mother who’s passionate about her family and friends. In her spare time, she enjoys movies, skiing and traveling.

Alla at New Smile Orthodontics


Alla joined the team in July 2015. With her background in psychology, its only natural she is the initial face patients see when they step into the office. She aspires to make every patient feel comfortable and at home. She is passionate about helping others and enjoys interacting with the patients.

Alla resides in Middlesex, NJ with her three year old son Mason. She enjoys spending time with friends and family, dancing and being outdoors.

Ari at New Smile Orthodontics


Aricellis found her love in dentistry at age 19. She received her dental education in Puerto Rico and continued her studies in the states. She became certified as a dental assistant at Miami Dade Community College and Middlesex Community College. She has been a team member of New Smile Orthodontics since 2011. Not only does she assist Dr. Castagna, but she also helps up front as a translator for Spanish speaking patients. Working one on one with her patients is what Ari considers the best part of her job and seeing the difference a beautiful smile can make in a person’s confidence and self-esteem.

She enjoys playing basketball, reading and being at the beach.

Kim at New Smile Orthodontics


Kim studied at Warren County Community College and Dental Studies Institute in Fairfield, NJ. She is a licensed X-ray technician, certified dental assistant, registered dental assistant and CPR certified. Kim feels that the most gratifying part of her job is the end result and happiness in the patient’s faces when they get their braces off.

She is happily married, a mother of three children, and has two cats. When not working she enjoys exercising, reading, art, motorcycling, spending time outdoors, and spending time with her family.