Dr. Ali Allen Nasseh is the founder of MicroSurgical Endodontics (MSEndo), and a practicing endodontist in Boston, MA. He is an active member of several organizations including, but not limited to the American Dental Association (ADA), the American Association of Endodontists (AAE), the Massachusetts Dental Society (MDS), Massachusetts Association of Endodontists (MAE), and the Boston Metropolitan Dental Society (BMDS).

Dr. Nasseh is a national and international speaker and lectures actively in such areas as surgical and non-surgical root canal therapy, technological advances in endodontics/dentistry, and principals of patient care and anesthesia for a painless dental experience. Dr. Nasseh's practice philosophy is providing the most gentle, caring, and positive root canal experience by offering the highest quality of care using the latest technological advances in the dental field. He believes that root canal therapy should never be a painful experience and lectures extensively on the patients’ right to a gentle, comfortable, and completely painless experience.

Dr. Nasseh's practice, MicroSurgical Endodotics (607 Boylston Street) is also an educational institute where he gives advanced training to dentists across the nation and around the world in root canal therapy and microsurgery. He teaches at the postdoctoral level at Harvard Dental School and is a former instructor and lecturer in the Head and Neck Anatomy course at Harvard Medical School.