Meet The Doctors

(978) 365-5302

Dr. Theodore R. Nelson, D.D.S.

Dr. Nelson was born in Bangkok, Thailand, and  moved with his family to the Boston area when he was 13.  He is a graduate of Loma Linda University School of Dentistry.  He practiced in California with two of his professors before moving to Massachusetts to this office.  He is a member of the American Dental Association, Massachusetts Dental Society, Wachusett District Dental Society, The Academy of General Dentistry and Cerec Doctors. Dr. Nelson is active lobbying at Beacon Hill with a non-partisan, political organization solely dedicated to the advancement of the dental profession.  

Dr. Nelson welcomes patients of all ages.  His goal is to deliver premier dentistry to each patient in a relaxed and comfortable environment.  Dr. Nelson enjoys all aspects of general dentistry including preventative, restorative, endodontics, prosthodontics, and cosmetic dentistry. 

Dr.Nelson is active in recruiting students to the dental profession.  He often teaches college level Intro to Dentistry, and encourages prospective dental students to spend time shadowing he and his staff.  Due to his experience in CERECDr. Nelson is a part time clinical instructor at Boston University Goldman School of Dentistry. He is proud to have welcomed several of his past students into the dental profession.  After 30 plus years of dentistry, he still loves his profession. 

Outside of the office Dr. Nelson is active in the Clinton Area Rotary. Giving back to the community he calls home is important to him. He enjoys spending time with his family,  photography, atving, travel, and watching the New England Patriots. 

Dr. Nelson and family have called the Lancaster - Clinton area home for the last 30 years.

If you would like to schedule an appointment with Dr. Nelson, please contact him at his Lancaster practice today!

Dr. Jonell Hopeck


Dr. Jonell Hopeck went to Tufts University where she graduated cum laude in Biology in 2008.  She graduated with honors with her Doctor of Dental Surgery from UNC Chapel Hill School of Dentistry,  Dr. Hopeck did a three year residency in Periodontology at Tufts University School of Dental Medicine in Boston.  She is a certified Diplomate of the American Board of Periodontology.

Dr. Hopeck is a memeber of the American Dental Association, The American Academy of Periodontology and other local dental societies.

 When relaxing, Jonell enjoys going out with friends,  working out on her Peloton and 80's music. 

If you would like to schedule an appointment with Dr. Hopeck, please call our office today. 

Dr. Jonila Pishtari Buzzell


Dr. Theodore R. Nelson would like to welcome Jonila Buzzell, DMD to his practice.  Jonila is a Worcester native who graduated from Boston University with a Bachelor of Arts in Chemistry.  She attended Tufts University, where she received her Doctorate of Medicine in Dentistry.   When she first practiced in Worcester she received the Clinical Excellence and Patient Care Award.

Dr. Buzzell has been practicing in the Worcester area for close to 8 years.  She is an active member of the American Dental Association, Massachusetts Dental Society and the Worcester District Dental Association.  She has volunteered her time with the Special Olympics to help raise awareness in the importance of dental hygiene for children and adults with disabilities. 

When not practicing dentistry, Dr. Buzzell enjoys spending time with her husband, Mark and their two young children, traveling and yoga.

 Dr. Buzzell takes great satisfaction in providing excellent care for her patients.    She is skilled in digital dentistry and enjoys learning the latest procedures.  She will be working together with  Dr. Nelson and Dr. Hopeck  to provide patients the highest standard of care.  Dr. Buzzell is currently accepting new patients.  Please call 978-365-5302 today to schedule an appointment on Monday, Wednesday or Friday.  

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