Ali Maddahi, DMD

Dr. Maddahi brings more than 35 years of clinical experience to Orris Dental, which he founded in 2010. His path to dentistry began in science. A strong background in microbiology sparked his interest in how oral health connects to overall health, and he was drawn to a field that combines science, problem-solving, and the chance to make a real difference in people's quality of life.

That scientific foundation still shapes his work. Dr. Maddahi has more than 25 years of teaching and research experience. He has served as an Attending Dentist in the General Dentistry Residency program at Cambridge Health Alliance and as a lecturer in the Department of Oral Health Policy and Epidemiology at the Harvard School of Dental Medicine.

Patient Care and Continuing Education

At Orris Dental, Dr. Maddahi provides comprehensive care with a strong focus on patient education. His favorite part of the job is helping patients understand their oral health and working with them to find the right treatment.

He completed a mini-residency in dental sleep medicine at Tufts and treats obstructive sleep apnea with custom oral appliances. He also completes multiple continuing education courses each year. He works closely with a team that shares his commitment to thoughtful, high-quality care and a comfortable experience for every patient.

Education and Training

  • Tufts University School of Dental Medicine – Doctor of Dental Medicine (DMD)
  • Harvard Medical School – Postdoctoral Research Fellowship in Medicine
  • Tufts University School of Dental Medicine – Mini-Residency in Dental Sleep Medicine

Professional Associations

  • American Dental Association
  • American Academy of Sleep Medicine
  • American Academy of Dental Sleep Medicine
  • Massachusetts Dental Society

Outside the Office

Dr. Maddahi loves cooking vegetarian food and trying new plant-based recipes. He enjoys hiking and time in nature, often photographing interesting plants along the way and using an identification app to learn what they are. He also starts every workday with meditation, a routine that centers him and that he's kept for many years.

I highly recommend Orris Dental to anyone.

I had a great experience at Orris Dental. I recently switched dentists and am very happy that I did. Dr. Maddahi took the time to listen to my concerns, answer my questions, and perform my fillings carefully and thoroughly. The office is very clean, comfortable, and relaxing. The hygienist was also very kind and attentive, and Dr. Maddahi even checked on my progress throughout the visit, which made me feel very well cared for. The entire team was professional, friendly, and focused on providing quality care. I highly recommend Orris Dental to anyone looking for a dentist who truly takes the time to care for their patients and make them feel comfortable.

-Enana E.