Meet the Staff

Knowledgeable, Experienced, and Considerate

All our professionals at Gary C. Demetriou, D.M.D. maintain the highest levels of accreditation and pursue ongoing education to stay up to date on the latest trends in dentistry.

Kerri Lemieux, Office Manager

meet teamImmediately after graduating from Methuen High School in 2006, Kerri became a member of our dental team. You used to find her chair-side assisting Dr. Demetriou, but now she is working with patients at our front desk and managing the dental office to maintain the highest level standard of care for our patients. After gaining valuable experience since her entrance into the field, over a decade ago, Kerri is well-qualified to assist our patients in maximizing their insurance benefits as well as prioritizing treatment plans in order to make sure each patient receives the highest level standard of care with the lowest out-of-pocket expense as possible. As friendly and professional as Kerri is to our patients here at Gary C. Demetriou, D.M.D, it is her excessive behind the scenes contributions that really make a huge difference in the way the practice operates and gives each patient a more pleasant dental experience.

She enjoys getting to know each and every patient that comes to our office and makes sure that we meet their specific needs. In her spare time, Kerri likes to go flying in her father’s seaplane as well as spending time in New Hampshire with her fiancé. She is hoping to start a family in the near future.

Crystal Kres, Front Desk Receptionist/Patient Coordinator

Crystal joined Dr. Demetriou’s office in early 2016. She has been interested in pursuing a career in the field of dentistry as a result of her best friend already being in this field for over a decade. Our patients and staff enjoy her positive and bubbly personality and welcoming smile. Crystal worked very hard to familiarize herself with all aspects around the dental office to better enhance her abilities with treatment plans, scheduling, payments, insurance coverages/billing, and much more. She has played a substantial role in helping this office run as smoothly as possible. You can find Crystal as the first face you see when you walk into our office. She works directly with our patients setting up appointments, checking insurance benefits and helping patients get the most out of their insurance. Outside from work, Crystal is an avid gardener. She enjoys spending time at the lake, caring for her two cats, and more importantly watching her niece and nephew grow.

Aili Civitarese, Dental Hygienist

Aili attended Middlesex Community College from 2013-2016, receiving degrees in both Dental Assisting and Dental Hygiene, before graduating in 2016. Since joining our team in 2016, Aili has taken great pride in patient care and feels as though it is very important that patients feel comfortable while they are in her chair. She makes sure her patients completely understand the recommended treatment and understand the need for preventative visits and how their dental health relates to their overall health. Aili’s goal while working at Dr. Demetriou’s office is to gain as much experience as she can while extending her knowledge in dental hygiene. Aili has made a great addition to our team by continuously providing high-quality care to all of her patients. She continues to work hard to help her patients have an enjoyable dental experience. Outside of work, Aili loves being outdoors and enjoys camping, hiking, taking her dogs for walks, travelling and relaxing with her family and friends..

Kelsey Burton, Dental Assistant/Treatment Coordinator

meet team
Kelsey completed the Dental Assisting Program at Middlesex Community College in 2011. She joined Dr. Demetriou’s team in February of 2012 and has worked chairside with Dr. Demetriou ever since. Kelsey not only assists Dr. Demetriou clinically, but also takes on many roles at our office. She is in charge of making sure our procedures and protocols are up to date as well as managing and ordering supplies to make sure our office runs as smoothly as possible. Kelsey has become a familiar face around the office, treating all of our patients with a personal level of care to achieve healthy, beautiful smiles. As a result of her working here for over 5 years, Kelsey has become familiar with each patient and has been able to develop friendly relationships with them. She treats all of our patients with a personal level of care. Her gentle demeanor and conscientious work ethic helps patients feel confident and comfortable in the professional dental care they receive. In her spare time, Kelsey enjoys shopping and being outdoors especially in the nice weather.

Brittany Burton, Office Assistant

Brittany has been a member of our team since early 2016. She is currently attending Middlesex Community College to become a Dental Hygienist. While working on completing her degree, Brittany enjoys working at Dr. Demetriou’s office to gain knowledge and experience in the field of dentistry. She is involved in all aspects of the practice. You can find her in the treatment rooms helping the hygienists with charting and treatment planning, helping out with the daily duties of the front office, as well as assisting Dr. Demetriou chairside. Working so closely alongside Dr. Demetriou and his patients has given Brittany the incredible opportunity to learn and grow in the dental field, leading to a promising career as a Hygienist. Brittany recognizes that all of our patients deserve to receive dental care that reflects their individual needs. As Brittany is attending school she looks forward to being among the team for years to come. She also works as a hair stylist on the weekends. In her free time Brittany enjoys hanging out with family and friends as well as working out.