Our Staff

This remarkable team works closely with Dr. Kattner to accomplish your treatment goals with uncompromised compassion and expertise. We take pride in running on schedule and still assuring that each appointment is a pleasant experience for you or your children. Dr. Kattner and his staff have regular in-house training days and also participate in association meetings to stay at the leading edge of treatment appliances and techniques.

Wendy Bereczky, Office Manager
Wendy has been with Kattner Orthodontics since 1998. As our office manager, she works closely with Dr. Kattner to create the great environment so many families have come to know as our hallmark. Wendy not only manages our team, but she is also our patient advocate and the source of many wonderful ideas that have made our office better and better with each passing month. Wendy was born and raised in Waukegan,IL, married her high school sweetheart in 1979, and together they have two sons. She enjoys spending time entertaining in the company of family and friends.

Betty Norris, Administrative Assistant
While Betty has only joined our team relatively recently, she has many years of experience in administrative health care. She is our Administrative Assistant and works closely with Wendy at our front desk scheduling appointments and managing our complex recall system. She has been married for 20 years and has two children, both attending college. Betty is an adventure seeker and enjoys water skiing, horseback riding and parasailing.

Lauren Marello, Treatment Coordinator
Lauren has been with Kattner Orthodontics since 2000. Lauren has great communication skills and a vast knowledge of the many aspects of clinical orthodontics, so she is the perfect person to coordinate our new patient examination process. She was born and raised in Waukegan, Illinois and graduated from Waukegan High School in 1997. She enjoys volleyball, reading, travel and spending time with her family and friends.

Sharon Olszewski, Insurance/Financial Accounts Manager
Sharon joined our team in 2005 and does a great job wading through the complex world of orthodontic insurance. In addition, she will work closely with you with the goal of creating a payment plan that is sensitive to your particular financial situation. Sharon has been married 35 years and she has four grown children and one grandson. She enjoys cross-stitching (every day at lunch), watching old movies and dining out.

Gail Sargent, Financial Assistant
Gail has been a member of our financial team since 2004. She joins Sharon in the management of our insurance and patient accounts and is the one who will be giving you a reminder call in the rare circumstance of a missed payment. Gail is married with one child and she loves to read, sew and watch movies. She is active with her Bible Study group and in her church nursery.

Christina Theel, Clinical Chairside Assistant
Christina has been a member of our clinical orthodontic department since 1999. She loves her job and enjoys working with people and getting to know the wonderful families that have chosen Kattner Orthodontics to be a part of their oral health care team. Christina's hobbies are exercising, swimming and spending time with her husband, new baby boy, family and friends.

Imee Jarencio, Clinical Chairside Assistant
Imee has been with Kattner Orthodontics since 2002. She recently married and has a newborn baby girl. She enjoys watching new movies, reading, dining out with her husband and spending time with her family and friends. Imee is happy to have a job that she enjoys so much (and we're happy she is here too!).

Kelly Deleff, Clinical Chairside Assistant
Kelly brings a remarkable mix of enthusiasm and professionalism to our clinical treatment room. Born and raised in Kenosha she enjoys living a healthy lifestyle, outdoor activities and various sports. Kelly loves to travel to better learn about different cultures, and spends her free time with family and friends.

Julie Poyer, Clinical Chairside Assistant
Like several of our employees, Julie was one of Dr. Kattner's patients as a teenager. So it was really exciting for us when she joined our team in 2005. She is married and has two beautiful children. Julie enjoys reading, crafting, scrap booking and spending a lot of time with family and friends.

Justine DeFilippis, Clinical Chairside Assistant
Justine has been with Kattner Orthodontics since 2005. She is a fast learner and was promoted from a more junior position in our office to a chairside assistant because of her talents, great attitude and wonderful dedication. She is currently attending classes at the College of Lake County. She loves snowboarding and enjoys taking her dirt bike out for a spin.