Our Caring, Professional Chelmsford Team

Our office uses advanced technology and modern techniques to ensure the highest quality dental care with minimal discomfort.

Clifford G. Walters, DMD

Dental Director

The past 25 years I have been practicing dentistry have truly been a pleasure. I find great personal satisfaction from knowing that I have made a positive difference in the lives and health of those around me.

  • Undergraduate degree – Brown University, 1978
  • Doctorate of Dental Medicine – Harvard University School of Dental Medicine, 1984
  • Masters of Public Health – Harvard University School of Public Health, 1984
  • Residency in General Dentistry – Montefiore Medical Center, Bronx, NY, 1984-1985
  • Residency in Dental Public Health – New York City Department of Public Health, 1985-1987

Professional Affiliations

  • American Dental Association

John Hagigeorges, DMD

General Dentistry

Dr. John Hagigeorges is a native Bostonian who brings 35-plus years of clinical experience to Great Hill Dental Partners – Chelmsford. He earned his Bachelor’s Degree in Chemistry, his Doctorate in Dental Medicine & a Fellowship in Oral & Maxillofacial Implant Prosthetics from Tufts University in Boston. Since 1985, he has grown his own private General Practice in the Merrimack Valley while pioneering the applications of digital scanners in Cosmetic Dentistry for the Patterson Dental Corporation.  In 2013, he was recruited by a large group practice in North Carolina to become the Director of CAD-CAM Dentistry where he practiced Family Dentistry and trained a staff of 55 doctors. His passion is delivering a superlative experience to every single one of your visits that is centered on personal & professional service. Let him beautify your smile and improve your comfort & self-image.

John Walsh, DMD


Dr. Walsh is an active member of the American Dental Association, the American Association of Orthodontists and the Northeastern Society of Orthodontists. He has extensive training in treating multi-disciplinary and surgical cases, and has a strong background in orthodontic treatment with clear aligners. He stays up to date with the latest orthodontic innovations and techniques by regularly attending seminars and courses. Dr. Walsh is passionate about creating healthy, beautiful smiles that last a lifetime. He always welcomes questions and takes the time to answer and discuss them thoroughly.

Dr. John Walsh grew up in Connecticut and completed his undergraduate degree in Molecular and Cell Biology at the University of Connecticut, where he graduated Magna Cum Laude. He stayed a UConn Husky for another 4 years, attending the University of Connecticut School of Dental Medicine where he received his D.M.D. Immediately after dental school, he completed an additional three years of specialty training in orthodontics at Montefiore Medical Center in New York City.

Outside of the office, Dr. Walsh enjoys spending time in the outdoors with his wife, Sarah, and his dog, Stella. In his off time, he enjoys skiing, hiking, surfing, mountain biking and photography. Even though he went to residency in New York City, Dr. Walsh is a passionate New England sports fan, especially the Patriots and Celtics.

Bahar Houshmand, DDS

Pediatric Dentist

Dr. Bahar Houshmand received her DDS degree from Shahid Beheshti University. She continued her education at Stony Brook University and University of Washington where she obtained her Master’s degree and second dental degree respectively. Dr. Houshmand completed her pediatric residency training at University of Connecticut Health Center and Connecticut Children`s Medical Center.

After completing her residency program, Dr. Houshmand was honored to join University of Connecticut Pediatric Dentistry department as full-time faculty. She was privileged to teach clinical and didactic courses to dental students and pediatric dentistry residents for the past few years.
Dr. Houshmand strongly believes in education and creating a positive relationship with parents and their children. She enjoys interacting with kids and listening to their priceless stories. She treat her patients with respect and patience, as if they are my family members.

In her spare time, Dr. Houshmand likes to spend time with family and friends. She enjoys painting, reading and all outdoor activities.Dr. Houshmand is a member of the American Association of Pediatric Dentistry and is a diplomate of American board of pediatric dentistry.

Ilya Garibyan, DDS

Oral Surgery

Dr. Gaibryan is a graduate of Boston University, where he received his bachelor’s degree in biochemistry graduating Cum Laude. Dr. Garibyan then continued his dental education at Boston University, Henry M. Goldman School of Dentistry which he graduated Summa Cum Laude.

Dr. Garibyan is committed to providing top quality care and personalized treatment for his patients. He strives to create a welcoming environment and to ensure each patient’s comfort. Dr. Garibyan regularly attends continuing education courses and takes great pride in providing quality results utilizing the latest technology and techniques available in treating his patients.

Dr. Ilya Garibyan was born in St. Petersburg, Russia and grew up in Jerusalem, Israel. In his free time, Dr. Garibyan enjoys spending time with his family, skiing, biking, playing tennis, and spending time outdoors. Dr. Garibyan is a member of the American Association of Oral and Maxillofacial Surgeons, the Academy of General Dentistry.

New Patients are Always Welcome at our Practice!

Please feel free to call us or email us if you have any questions or wish to book an appointment.

Great Hill Dental Chelmsford

(978) 244-0629


Great Hill Dental Chelmsford
Address : 122 Chelmsford St.
Chelmsford, MA 01824-3604


Monday: 8am-5pm
Tuesday: 8am-5pm
Wednesday: 8am-7pm
Thursday: 8am-7pm
Friday: 8am-3pm
Saturday: 8am-3pm