About Dental Associates
Dental Associates, founded by Dr. Sumner Hirshberg in 1947, is the oldest group practice not only in Quincy but all of Massachusetts. Dr. Hirshberg set out to provide the practice’s patients with quality, state-of-the-art dental services. We continue to follow his vision.
Currently, we are owned and operated by Dr. Lewis Hootnick. He and his dedicated team offer comprehensive dental services for the whole family, including implant placement and restoration.
Meet Our Doctors
Lewis E. Hootnick, D.M.D., General/Restorative Dentist
Dr. Hootnick joined Dental Associates in 1981. He received his DMD from Tufts University School of Dental Medicine in 1979 and completed his residency at Park City Hospital in Bridgeport, CT. Dr. Hootnick has been practicing restorative dentistry for over 30 years and offers his patients state-of-the-art techniques and services (link to Services). He is widely respected on both the South and North Shores for his quality treatment.
Khanh Xuan Le, D.M.D., M.Sc., Periodontist
Dr. Le specializes in periodontics and implantology. She earned her Doctorate in Dental Medicine from the University of Montreal (Quebec) and Certification in Periodontology from the Universite Laval (Quebec). Dr. Le holds certifications in Advanced Education in General Dentistry form the Lutheran Medical Site in Boston, MA.
Dr. Le is a Diplomate of the American Board of Periodontology, a Fellow of the Royal College of Dentists of Canada, and a member of the American Academy of Periodontology.
In her spare time, the South shore resident enjoys cooking, baking, crafts, and playing piano with her daughter.
Catherine A. Casey, D.M.D., Associate D.M.D./Restorative Dentist
Dr. Casey joins us from Braintree, MA. She attended Braintree High School and graduated magna cum laude from Saint Anselm College with a degree in Biochemistry. Dr. Casey grew up playing softball and basketball and continued her softball career through college. She earned her DMD from Tufts University School of Dental Medicine.
During her time at Tufts, Dr. Casey was an active volunteer at The Dimock Community Health Center in Roxbury, MA providing dental care to an underserved population. She was also a student representative for pre-dental and impression days for prospective students, as well as a volunteer for pre-clinical teaching sessions for underclassmen.
Dr. Casey has a passion for restorative dentistry and has been trained in some of the newest dental technology and materials. Her attention to detail and patient centered care allows her to create the best possible treatment options for your specific casę. Dr. Casey is excited to incorporate digital dentistry into the practice, especially our new 3–shape trios scanner.
Dr. Casey is a member of the American Dental Association, Academy of General Dentistry, American Association of Women Dentists and Massachusetts Dental Society.
Outside of dentistry, Dr. Casey enjoys spending time with family and friends, travelling, attending spin class and coaching softball.
Katerina Kostagianni, D.D.S., D.M.D., M.S./Prosthodontist
Dr. Katerina Kostagianni is a Prosthodontist with extensive experience in advanced Esthetic and Implant dentistry. She received her DDS from University of Athens (Greece) and her DMD from Tufts School of Dental Medicine. In 2014 she earned her Certificate and Master’s Degree in Advanced Prosthodontics at the University of Alabama. Afterwards, she joined the implant Periodontal Prosthodontics Fellowship at the University of Maryland, where she further enhanced her skills in Implant Dentistry and complex implant restorative procedures. Currently, she serves as an Assistant Professor in the Post-Graduate Esthetics Clinic at Tufts School of Dental Medicine
Dr. Kostagianni is committed to a personalized and detail-oriented treatment for her patients. Her goal is to provide high quality care with a focus on smile design, minimally invasive dentistry and full mouth reconstruction. She is currently a member of the American College of Prosthodontics, the Academy of Fixed Prosthodontics, the Academy of Osseointegration and the American Dental Association.
In her free time she enjoys traveling, sailing and spending time with friends and family.
Meet Our Registered Dental Hygienists
Demetra Moynihan, R.D.H. - Associate Clinical Director, Lead Hygienist
Demetra has been a valued member of our team since she graduated from The Forsyth School for Dental Hygiene in 1981. She has many long-term patients who depend on her guidance for healthy teeth and gums.
Outside of work, Demetra enjoys spending time with her family.
Amanda Vick, R.D.H.
Amanda joined our dental hygiene team in 2015. She attended Mount Ida College and will graduate with a bachelor’s degree in addition to her hygiene degree. Amanda is a great complement to our staff!
In her free time, she enjoys spending time with family and friends.
Mollykate Cannon, RDH
Our Certified Dental Assistants
Kerry Pert, C.D.A. - Lead Assistant
Kerry is a 2005 graduate of the Southeastern Technical Institute’s certified dental assisting program. She’s been a part of the Dental Associates team for more than 10 years. She is the office jokester, making office meetings and “lunch and learns” fun. Kerry is a mom to a great son, whom we have watched grow up. Kerry has nicknamed herself, “superstar.”
Meet Our Staff
Erica Delgado, Treatment Coordinator
Erica started working with our team at Dental Associates in 2007, after graduating from South Shore Vocational Technical High School. She initially thought she would be working part time as she pursued her passion for hairdressing. Several years later, she is OUR resident hairdresser! Erica is a valued team member, processing many of our insurance details and treatment plans.
In her free time, Erica can be found on the softball field, basketball court, or the beach.
Frank Rocchio, Dental Lab Technician
Frank has been with Dental Associates since 1983. He is an invaluable asset to the doctors. Our lab is important to our work, and Frank’s eye for aesthetics and detail are a perfect complement to our full-service restorative practice.
Frank completed training at Wentworth Institute of Technology.
An avid skier, Frank enjoys winter sports and spending time with his family.
Flora Lambert, Office Manager
In her free time, Flora can be found in a yoga studio, swimming pool, or spending time with her family.
Nicole Sardelis, Patient Care Coordinator
A passionate bird lover, she always keeps her binoculars close by.
Meghan Morrill, Patient Care Coordinator
Bio Coming Soon
Monday 8:00 AM - 6:00 PM
Tuesday 8:00 AM - 6:00 PM
Wednesday 8:00 AM - 5:00 PM
Thursday 8:00 AM - 6:00 PM
Friday 8:00 AM - 2:00 PM
Saturday 8:00 AM - 12:00 PM
(every other Saturday)