Dr. Daniel O'Brien
General Dentist
Dr. O'Brien is a 1984 graduate of Saint Anselm College in Manchester, NH. He then attended Tufts University School of Dental Medicine and received his DMD degree in 1989. He joined the practice of the late Dr. James Naumes immediately after graduation and has been treating the residents of Marlborough and the surrounding communities for the last 36 years.
Dr. O'Brien is a member of the American Dental Association and the Massachusetts Dental Society. He stays current with advances in dentistry by attending numerous continuing education seminars.
Dr. O'Brien is married to Dr. Mary O'Brien, a physician at UMASS Community Physicians. They have 4 children, Daniel, Sean, Molly and Patrick. In his spare time, Dr. O'Brien enjoys traveling, biking and golf.
Dr. Margaret Vu Ennis
General Dentist
Margaret Ennis, D.D.S. joined our practice in 2022 and she is a general dentist offering skilled care for our patients. Skill and compassion go hand in hand when providing exceptional patient regard and she is committed to her profession and providing exceptional care. Dr. Ennis earned her Doctor of Dental Science (DDS) at Baylor University. She is an active member in the ADA and MDS. As a dental professional, she stays up to date on the latest advancements in dentistry in order to provide the most current treatment options for our patients. As a doctor, she recognizes that our patients are unique individuals who have placed a great deal of trust in her and our team. Dr. Ennis does provide treatment for our patients in our Webster location and Palmer location (Palmer Dental).