Meet the Doctors

Dr. Susan Mazzei is a highly skilled dentist with a specialty in Prosthodontics at West Suburban Oral Healthcare. She is dedicated to providing gentle and effective care to patients of all backgrounds and ages in Naperville, Illinois.

A graduate of Northwestern University Dental School, Dr. Mazzei received her degree in 1987. She later completed her Certification in Prosthodontics. Upon the completion of her studies, she joined the faculty of Northwestern University Dental School as a full-time Clinical Assistant Professor.

Dr. Mazzei’s tenure continued for twelve years, where she enjoyed educating future dentists in all facets of their four-year education. After these years of hard work and dedication to the University, she was granted an Assistant Professor Emeritus at Northwestern University.

Dr. Mazzei believes that excellent oral health begins with education and prevention. Her professional philosophy is aligned with Functional Medicine, which determines how and why illness occurs and restores health by addressing the root causes of disease for each individual. She has made it her mission to enlighten patients on how they can take greater control over their dental health, which then supports optimal systemic health. As such, Dr. Mazzei is still committed to continuing her education and remaining current with the latest advancements in oral health and dentistry, ensuring that her patients receive the best care possible.

She is a Certified Functional Medicine Health Coach, a Charter Fellow in the American Academy of Oral Systemic Health and completed the Preceptorship Program of the Bale and Doneen Method.

Dr. Kelsey Esposito joined West Suburban Oral Health Care as an Associate General Dentist in August 2017. After meeting Dr. Susan Mazzei, Dr. Esposito chose to practice here because of a shared belief in providing state of the art, relationship-based, comprehensive care that considers the needs of a patient as a unique individual. Dr. Esposito has an enthusiastic attention to detail and strives for the quality of care that will leave patients feeling satisfied with both their oral health and their smile.

Prior to pursuing her career in dentistry, Dr. Esposito lived and worked in New York City. She spent time in healthcare advertising and communications for a large ad company and a small nonprofit cancer research organization. Over a few short years, she realized that patient care was her true passion and left her desk job to hit the books. For Dr. Esposito, Dentistry is the perfect combination of her interests in fine art, healthcare, and helping people to achieve their best selves.

Outside of her professional activities, Dr. Esposito enjoys life in Glen Ellyn with her husband and three children. Together they explore local parks and trails, and love to go bike riding. Dr. Esposito’s hobbies include arts and crafts, interior design, and staying active.

Dr. Esposito holds a BA in Economics and Fine Art from Kalamazoo College and completed the Premedicine Post-Baccalaureate Certificate Program at Northwestern University. She earned her Doctor of Dental Medicine from The University of Illinois at Chicago and graduated with the Academy of Operative Dentistry Outstanding Achievement Award, which recognizes students with great interest and accomplishment in Operative Dentistry. Dr. Esposito is a member of the American Dental Association, Chicago Dental Society, Illinois Dental Society, the Academy of General Dentistry, the American Academy of Cosmetic Dentistry, and the American Academy for Oral and Systemic Health.

Dr. Marco Fajardo is a 1992 graduate of Northwestern University Dental School. He joined the faculty of Northwestern University Dental School as a part-time Assistant Clinical Instructor. As a co-group leader, Dr. Fajardo lectured, taught, and monitored the progress of aspiring dentists for over seven years. He also served as a member of the University Dental Associates of the University of Chicago. In 1994, Dr. Mazzei and Dr. Fajardo formed the basis of what would become West Suburban Oral Healthcare.

Dr. Fajardo serves as the Team Leader at West Suburban Oral Healthcare. He is in charge of the 3 M’s of management—Manage, Monitor, and Make it go right for patients, doctors, and the team.

Dr. Fajardo is the Head Golf Coach and Assistant Baseball Coach at the University of Chicago Laboratory School. He has also served as a baseball instructor for the Chicago White Sox Organization and Training Academy for 17 years.

He enjoys golfing, baseball games, family, and playing with his giant English mastiff Zeus in his free time.

Dr. Ashley Nguyen was born in upstate New York. Her desire to help individuals achieve a healthy and beautiful smile sparked her interest in dentistry. This ultimately brought her to the University of Buffalo, where she graduated with honors with a Bachelor of Science in Biomedical Sciences. She then went to Midwestern University in Downers Grove, Illinois, for dental school.

Dr. Nguyen is dedicated to clinical excellence in dentistry and is thrilled to join West Suburban Oral Health Care after witnessing our patient-centered philosophy and enthusiasm. She enjoys volunteering with organizations such as Illinois’ Mission of Mercy and has been to the Dominican Republic to provide free dental care. She hopes to participate in more community engagement programs in the future. Dr. Nguyen belongs to the American Dental Association, the Chicago Dental Society, the Illinois State Dental Society, and various local organizations. She continues her education by attending conferences and seminars that include courses on dental implants, oral surgery, and cosmetic dentistry.

Dr. Nguyen was drawn to the area because of the kind people and easygoing environment. She loves to travel, hike, cook, and binge movies and shows in her free time. As a novice golfer and new to the area, tell her about any good tips to improve her skills or recommendations of places to golf. She is also a foodie, so any delicious restaurant or recipe suggestions are welcome.