Meet Our Team of Arlington Heights Dental Experts
Liz, Office Manager and Treatment & Financial Coordinator
Liz has had a well-established career in dentistry, beginning with chairside assisting while working on her teaching degree at NEIU in Chicago. Her career has evolved over a 40-year span. Liz is our Office Manager and Treatment & Financial Coordinator and has been with our dental office for over 20 years. She is easily recognized by her cheerful voice and pleasant smile. Most of our patients look to Liz to accommodate all their scheduling and treatment planning needs. She enjoys biking, traveling, reading, watching movies, visiting the botanical gardens, studying French and taking online courses. She is fluent in Polish and hopes to travel there one day. Spending time with the loves of her life, Tyler and Jake takes precedence overall.
Georgia, Insurance Coordinator
Georgia’s career in dentistry covers over 40 years and counting! She studied at both Triton Junior College and Elgin Community College, earning her Associates in Administrative Assisting. Today, she loves being able to smoothly assist patients with all of their dental insurance-related concerns and questions. Originally from the Chicago area, she has been blessed with two amazing sons. In her spare time, you can usually find her hanging out with her family, traveling, being near water, boating, listening to music, and dancing. She also always enjoys making other people laugh.
Terri, Front Desk Coordinator
Originally from Wheeling, Terri has been in the dental arena for over 40 years! After completing the dental assistant program at Loyola, she worked in the position for 25 years, 15 of which were spent alongside Dr. Trumfio. She loves forming long-lasting relationships with patients and being an integral part of the dental office team. Her passion for helping others always shines through. In her free time, she enjoys volunteering at various local ministries, lounging with her expanding family at their Wisconsin lake house, boating and gardening.
Anne Marie, Dental Hygiene Team Leader
Anne Marie began her affiliation with Dr. John Costello as a high school sophomore working part-time as a Dental Assistant. Her interest in dentistry led her to Dental Hygiene school where she completed all coursework at Harper College and now presents to our patients the experience of a 30-year career in Dental Hygiene. She is the Director of Hygiene Care and Periodontal Instruction in our dental office as well as our Dental Hygiene Team Leader. She is certified in local anesthesia and nitrous oxide sedation. In this capacity, she is better equipped as a Dental Hygienist to provide professional services for even the most sensitive patient procedures. Anne Marie is a certified Auxiliary in the Invisalign tooth alignment system. She enjoys spending time with her family and friends. She also enjoys most of her time with her two year old daughter, Avery, the light of her life!
Mary, Dental Hygienist
Mary has been a Dental Hygienist for 30 years and still loves what she does on a daily basis. She states “It is so very rewarding helping patients and getting them motivated to care for their mouths, which then improves their general health.” Mary has also been certified through the Scheduling Institute in extraordinary telephone customer service. Originally from Lincoln Nebraska, she graduated from the University of Nebraska where “Yes, they really do know and love football!” She has been married for 15 years to her husband and best friend, Larry. They have two daughters. Emily is a Senior at the University of Nebraska and Katie is a Sophomore at the University of Nebraska. Mary loves to read and travel.
Carla, Dental Hygienist
Carla is a Dental Hygienist and has been providing hygiene services for Costello & DeHart Dental Excellence for almost 10 years. She first came to our dental office as a patient. She has over 20 years of dental hygiene experience, with a strong background in Periodontics and Implant Dentistry. Carla is certified in local anesthesia as well as nitrous oxide sedation, making her a very knowledgeable asset to our team. Most recently, Carla was certified through the Scheduling Institute in extraordinary telephone customer service. Her pleasant nature and extreme competence have been a wonderful enhancement to our full-time staff. She lives in Arlington Heights, with her husband and three children. She enjoys spending her time with family and friends.
Laura, Dental Hygienist
Laura is a Dental Hygienist who began her dental career with Dr. John as an assistant back in 2006. His enthusiasm and love of his work got Laura interested in learning more about the dental field. After a few years of dental assisting, she went on to get her degree in Dental Hygiene and graduated from Harper College in 2010. With her gentle touch and calm chair side manner, Laura provides exceptional care while making patients feel as comfortable as possible. She is certified in both local anesthetic and most recently through the Scheduling Institute in extraordinary telephone customer service. In her free time, she likes spending time with family, friends, and her dog, Jenna. Laura is a huge Chicago Blackhawks and San Francisco Giants fan. During baseball season, you may overhear her giving Dr. John a hard time about the Chicago Cubs.
Margaret, Dental Assisting Team Leader
Maddie, Dental Assistant
Maddie first joined the Costello & DeHart Dental Excellence team in May of 2018, and she already loves working with such wonderful patients and doctors who have a great deal of integrity. Originally from Glenview, she has a boyfriend, two cats, and two dogs. Her favorite hobbies outside of the dental office include jet skiing, off-roading, and riding her scooter around in the summer. She always has a smile on her face!
Jackie, Patient Coordinator
Jackie completed her studies at the First Institute before joining the dental field 6+ years ago. In that time, she was both an orthodontic assistant and a treatment coordinator. Since joining our team, her favorite aspect of her job has been connecting with patients and bringing a smile to their faces.
Originally from Des Plaines, Jackie loves spending her time outside the office with her boyfriend and dog baby, Spook Bear. She also enjoys getting outdoors, being with friends and family, and eating good food!
Stephanie, Dental Assistant
For more than a decade now, Stephanie has spent her days making patients feel good about their smiles again. In fact, that’s her favorite part of her job! She attended dental school in Arlington Heights, which is where she underwent training in IV sedation/nitrous oxide monitoring, coronal polishing/sealants, and CPR/BLS. Congratulations are in order since she and her boyfriend recently became homeowners! In her free time, she loves to hang out with her dogs, travel all around the world, do crafts, and cheer on the Cubs and Blackhawks.
Caitlin, Front Desk Coordinator
Since joining our team in 2021, Caitlin has thoroughly enjoyed getting to meet all of our patients. Providing them with a warm welcome and building genuine relationships from there are two of her favorite aspects of her job. Outside of dentistry, her main passion is photography! In fact, she has been a photographer for more than five years now. One thing you may not know about her is that she is very good at drawing animals.