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694 Main Street, Holden, MA 01520 |

(508) 829-6665 Appointments

Nicholas Tretter, DDS

Dr. Tretter has been practicing dentistry in the Holden, Massachusetts, area for over two decades. He graduated from the New York University College of Dentistry in 1989 where he received the Society of Dental Anesthesia Award. He is a member of the Academy of General Dentistry and regularly attends continuing education courses at the Spear Education campus in Scottsdale, Arizona. His course work includes classes in aesthetic dentistry. As a dentist, his goals are to treat his patients with compassion and to ensure that they are comfortable. Dr. Tretter also wants to help his patients maintain optimum oral health and create the aesthetic qualities that they want in their smiles.

Dr. Tretter has been married to his wife for 24 years and they have two children who are both in college. His hobbies include flying, skiing and traveling. He also volunteers as a pilot for Patient Airlift Services, transporting patients to different facilities to receive medical care.

Meet Our Team

Within every successful and reputable dental office is a dedicated team. To learn more about the caring and experienced team members working alongside Dr. Tretter, please see below. You may also call us at 508-829-6665 if you have questions or would like to visit our dentist in Holden, Massachusetts.

Maryann – Office Manager

Maryann has been a part of the Nicholas Tretter, DDS team since 2015. She graduated from the David Hale Fanning School of Health and Technical Occupations with a dental assistant certificate. She started working in the dental field in 1983 as a dental assistant before transitioning to the administrative side of dentistry.

Maryann likes getting to know and connect with our patients and making them feel welcome and comfortable at the office. She makes sure that the office runs smoothly and efficiently.

Barbara – Dental Assistant

Barbara has been with Nicholas Tretter, DDS since 1998. She has 50 years of experience as a dental assistant and takes continuing education courses every year.

Barbara is proud to work with such a skilled and kind dentist and a stress-free, caring staff. She genuinely enjoys making our patients feel cared-for and making sure that our office is always clean and organized.

Elizabeth – Dental Hygienist

Elizabeth joined our team in 1984. She graduated from the Forsyth School of Dental Hygiene in 1982 and takes continuing education courses each year. She wanted to be a dental hygienist from the age of 10.

Elizabeth enjoys the cheerful, cohesive family feeling at our office and our focus helping patients receive the best possible care. She also appreciates the atmosphere of comfort and confidence. She works to make sure that every patient has a positive experience from the moment they enter the office to the time they leave.

Elizabeth has two grown children and two horses. In her spare time, Elizabeth enjoys art, traveling, yoga and outdoor activities, including the equestrian arts. Her outside interests enhance the relationships she has with her patients.

Jean – Dental Hygienist

Jean has been with Nicholas Tretter, DDS since 2013. She is a graduate of the Forsyth School of Dental Hygiene and has an associate degree in allied health from Northeastern University. Jean appreciates the fact that the practice stays current on the best treatments for our patients. She also works hard to personalize each patient’s treatment and values their dental health.

Sandra – Dental Hygienist

Sandra has been with our office for more than 2 years, first as a temporary employee and now as a permanent staff member. She has received the Clinical Excellence Award, and is proud to be part of such a great team where patients always come first. Sandra has three grown children and six grandchildren. She loves to bake, quilt and garden.

Stacey – Dental Hygienist

Stacey became a part of Nicholas Tretter, DDS in 2017. She is a graduate of the University of Bridgeport in Connecticut.

Stacey likes the kind and caring staff at our office and our wonderful patients. She also has a great deal of confidence in Dr. Tretter’s work. She treats each patient like family and stays current on the latest dental procedures. Away from the office, she enjoys running, reading and cooking.