About Our Doctors

Ian Fessler, D.M.D., Dental Director

Dr. Ian Fessler is a graduate of the Tufts University School of Dental Medicine and completed his residency at Harvard/Cambridge Health Alliance.  He has been practicing dentistry in the Boston area for over a decade and volunteers internationally to provide dental care to undeserved communities. He brings his approachable, nature and commitment to overall patient well-being to the practice. Dr. Fessler lives in the area with his wife Nyesang and their awesome 4-year-old son Kalden, although he is originally from Chapel Hill North Carolina where his Dad is a well-known dentist.  He is an avid runner and has completed many half Ironmans and 1 full Ironman.  We are excited to welcome Dr. Fessler to the team.

Marjan Askari, D.M.D.

Dr. Marjan Askari is a board-certified orthodontist who enjoys working with patients of all ages. She earned her DMD at Tufts University School of Dental Medicine, where she graduated Summa Cum Laude. Dr. Askari earned her Orthodontics certificate from the University of Maryland Dental School. She is a member of the American Association of Orthodontics, Northeastern Society of Orthodontists, and the American Dental Association. In her free time, Dr. Askari enjoys the arts, inclusint painting and sculpture, and theater.

Prana Eshaghi. D.M.D.

Dr. Prana Eshaghi has been practicing for over 20 years in Burlington, MA. Dr. Eshaghi is a graduate of Boston University, Goldman School of Dental Medicine, and is  a member of the American Dental Association, Massachusetts Dental Society, and the Iranian-American Dental Network.

David Goldberg, D.M.D.

Dr. Goldberg received his  Doctor of Dental Medicine from Tufts University School of Dental Medicine where he was a Merit Scholar, part of the Implant Honors program, and the Omicron Kappa Upsilon Honor Society, and won the Tufts Award for Excellence in Fixed Prosthodontics.  He went on to the Boston University Goldman School of Dental Medicine to specialize in Periodontology. 

Richard C. Gillis, D.M.D.

Dr. Richard Gillis, the founder of Gillis Dental and a practicing dentist in Needham for over 35 years, has recently retired. As the proud grandparent of three cherished grandsons, he hopes to spend his retirement watching them grow up, traveling with his wife and friends, and improving his golf game!.  Dr. Gillis attended Boston College for his undergraduate studies, and continued at Boston University School of Graduate Dentistry, where he earned his Doctorate of Dental Medicine in 1980. Dr. Gillis was honored with the International College of Dentists Award for outstanding achievement during his four years of study at Boston University. In addition to his family practice, Dr. Gillis has served on the faculty of the Prosthetics Department at Boston University as an assistant clinical professor. 

Dr. Gillis has always cared deeply about his patients and their families.  Dr. Ian Fessler has joined the practice to continue Dr. Gillis's legacy of exceptional patient care, and the Gillis team, many of whom have been with the practice for decades, remains committed to providing the quality denistry and exceptional care  you have come to expect at Gillis Dental! 

Maryanne Knasis-Irwin, D.M.D.

I received my DMD from Tufts University, and continued my education there by completing my Specialty Certificate in Endodontics. By using state of the art technology, root canal therapy can often preserve a damaged tooth that would otherwise require extraction. I enjoy educating patients to have realistic expectations of what root canal therapy involves, while providing treatment that is skilled, compassionate, and pain free in a comfortable and relaxed environment. Outside the office I enjoy reading, running, and spending time with my husband and our two daughters.

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8:00 AM-8:00 PM


8:00 AM - 8:00 PM / 8:00 AM - 5:00 PM Alternating


8:00 AM-5:00 PM


8:00 AM-8:00 PM


8:00 AM-5:00 PM