Doctors

Dr. Robert D. Boynton, D.D.S.

Dr. Robert Boynton was born and raised in the Berkshires. He attended Siena College graduating cum laude with a Bachelor of Science in Biology followed by earning a D.D.S. degree from Georgetown University School of Dentistry.

While at Georgetown, he performed dental surgery at the District of Columbia General Hospital, restorative dentistry at Children's Hospital and is currently on staff at Cooley Dickinson Hospital.

He is a member of the American Dental Association, Massachusetts Dental Society, Valley District Dental Society and past president of the Hampshire Dental Society. He currently holds licenses in The Commonwealth of Massachusetts, the State of Maryland and the District of Columbia.

Dr. Boynton resides in Northampton with his wife, daughter and two sons.


Dr. Robert J. Koolkin

An honors graduate of the University of Massachusetts, Dr. Koolkin then earned his Doctor of Dental Surgery from the University of Texas Dental Branch at Houston.

After completing his residency at Worcester City Hospital and a post-doctoral year at the University of Massachusetts, Dr. Koolkin entered private practice in Franklin County in 1986.

Dr.Koolkin has earned his Fellowship in the Academy of General Dentistry as well as the American Academy of Forensic Sciences. Formerly an Assistant Clinical Professor at Tufts University School of Dental Medicine, he served in the Department of Public Health and Community Service.

A long-standing member of the Academy of the History of Dentistry, Dr. Koolkin has lectured locally, regionally and nationally on topics related to early dentistry and anesthesia.

Dr. Koolkin is licensed in Massachusetts and Vermont and eligible in the Province of Nova Scotia.


Dr. Bennett Olmsted, D.M.D.

Dr. Bennett Olmsted grew up in Haverhill, Massachusetts. He attended the University of Massachusetts Amherst and was part of the Commonwealth Honors College. He graduated cum laude with a B.A. in History and a B.S. in Microbiology.

After graduating from college, Dr. Olmsted attended Boston University School of Dental Medicine. During his time in dental school, he worked at the Boston Healthcare for the Homeless Program, providing comprehensive dental care to those in need.

Dr. Olmsted is licensed in dentistry in Massachusetts and is a member of the American Dental Association, Massachusetts Dental Society, and Valley District Society.

Dr. Olmsted currently lives in South Hadley with his girlfriend Sarah.


Dr. David Nill, D.M.D.

Dr. David Nill is passionate about his work and ensuring that his patients can create and maintain their beautiful smiles. A native of Massachusetts and having practiced several years in Connecticut, David is proud to have found his home at Northampton Dental Group.

Dr. Nill graduated with High Distinction from Worcester Polytechnic Institute with a Bachelor of Science in Mechanical Engineering. He then completed his Doctor of Medicine in Dentistry (D.M.D.) degree from Tufts University. After graduation, David completed his General Practice Residency at the Dental College of Georgia at Augusta University. His residency focused on training specifically in dental implants, dental surgery, full-mouth restoration and intravenous sedation.

Dr. David Nill is committed to providing his patients with thorough and attentive care. Dr. Nill is a trained provider of Invisalign© and maintains active certification in Advanced Cardiovascular Life Support (ACLS). Recently, Dr. Nill was awarded Mastership within the International Congress of Oral Implantologists, recognizing Dr. Nill’s clinical experience and sustained continuing education in implant dentistry.

Dr. David Nill is a current member of:

  • American Dental Association
  • International Congress of Oral Implantologists
  • American Dental Society of Anesthesiology
  • Academy of General Dentistry

In his spare time, Dr. Nill enjoys cooking, reading, playing tennis, riding his bike and spending time with his wife, Amy, and their dog, Maya. David was also a snowboard instructor in Vail, Colorado and is an avid winter sports enthusiast.


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Northampton Dentist - Northampton Dental Group
Robert D. Boynton, D.D.S.
51 Locust Street, Ste. 2 - North Hampton, MA 01060 - ph. 413-584-3741