Our Caring, Professional Boston Team
Our office uses advanced technology and modern techniques to ensure the highest quality dental care with minimal discomfort.
Our Caring, Professional Boston Team
Our office uses advanced technology and modern techniques to ensure the highest quality dental care with minimal discomfort.

Steven Shapiro, DMD
Dental Director
Dr. Steven Shapiro is the Dental Director at Great Hill Boston and has been practicing Dentistry for over 10 years.
Dr. Shapiro is a graduate of McGill University School of Dental Medicine, where he earned his DMD. While at school, Dr. Shapiro was named the winner of the Canadian Dental Association’s President’s Award in recognition outstanding qualities in leadership, scholarship, character and humanity. He was awarded Gentle Dental Associate Dentist of the Year in 2009 and has since continued providing the best patient-care. Dr. Shapiro was also awarded Top Dentist by Boston Magazine in 2020.
Member of:
- American Dental Association
- Massachusetts Dental Society
Awards and Honors
- Boston Magazine, Top Dentist 2019
While not in the office, Dr. Shapiro enjoys golfing, playing basketball, skiing, and spending time with his family at their residence in Needham.

Catherine J. Moshirfar, DMD
Periodontist
I am passionate about educating my patients about the health of their mouth. I chose to specialize in periodontology because it was the perfect mix of microbiology, education, and artistry. I really enjoy the day-to-day interactions with my patients. I try to maintain a comfortable yet upbeat environment where the focus is always on quality patient care.
- Doctorate of Dental Medicine – Tufts University School of Dental Medicine
- Certificate in Periodontology – Tufts University School of Dental Medicine
Member of:
- American Academy of Periodontology
- Diplomate, American Board of Periodontology
In my time outside of our practice, I enjoy traveling and kayaking, and I am learning how to golf.
Awards and Honors
- Boston Magazine, Top Dentist 2017
- Boston Magazine, Top Dentist 2018
- Boston Magazine, Top Dentist 2019
- Boston Magazine, Top Dentist 2020
- Boston Magazine, Top Dentist 2021

Mahshid Bahadoran, DDS DMSC
Orthodontist
Dr. Bahadoran is a Diplomate of American Board of Orthodontics, platinum plus Invisalign provider. She is also American board-certified dental sleep medicine. She earned her second doctorate in medical science (DMSc) in orthodontics specialty at Harvard school of dental medicine. She did Doctor of Dental Surgery (DDS) with Distinction and Bachelor of Science (BS) in Biology from the University of North Carolina-Chapel Hill. She is a former faculty and lecturer at Harvard School of Dental Medicine.
Dr. Bahadoran is proficient in comprehensive adolescents and adult orthodontics with Invisalign, ceramic braces, Lingual braces, Brius, sleep apnea appliances, splint therapy for TMD treatment, accelerated orthodontics as well as phase I and phase II orthodontics treatment, interceptive for patients with mixed dentition, habit correction, and expansion.
Dr. Bahadoran is a member of the American Association of Orthodontics, the American Dental Association, and the Massachusetts Dental Society.

Qian Yang, DMD
Oral Surgeon
Dr. Yang graduated from Harvard School of Dental Medicine where he earned his DMD. He then went on to complete his Residency/Specialist training in Oral and Maxillofacial Surgery at Harvard/Mass General Hospital. During this time he also attended Harvard Medical School and earned his MD. Prior to his clinical career, Dr. Yang earned his PhD in Biochemistry from University of Michigan in Ann Arbor, MI. Before moving to the US, Dr. Yang graduated from Peking University (China) with majors in Biochemistry and Molecular Biology, and Economics.
Education
- Harvard School of Dental Medicine, DMD
- Harvard Medical School, MD
- University of Michigan, PhD
Professional Associations
- American Dental Association
- Massachusetts Dental Society
- American Association of Oral and Maxillofacial Surgeons
- Massachusetts Society of Oral and Maxillofacial Surgeons
- American College of Surgeons
- American Medical Society
Awards and Honors
- Boston Magazine, Top Dentist 2020
- Boston Magazine, Top Dentist 2021

Jose Colon, DMD
Periodontist
Dr. Jose Oscar Colon earned his Doctor of Medicine in Dentistry from the University of Puerto Rico School of Dentistry. His education continued at the Boston University School of Dental Medicine, where he received his Master of Science in Dentistry in Oral Biology and his Certificate of Advanced graduate studies in Periodontology. Dr. Colon was awarded as the Best Periodontist in Puerto Rico in the 2015 Dentist Choice Awards.
Professional Affiliations
- American Academy of Periodontology
- Colegio de Cirujanos Dentistas de PR
- Academy of Osseointegration
Dr. Colon volunteers his time as a local and international speaker in areas of Periodontics and Implant Dentistry.
Awards and Honors
- Boston Magazine, Top Dentist 2021

Roz Najafabadi, DMD
General Dentistry
Education
- Bachelor of Science in Chemistry – State University of New York at Binghamton
- Doctorate of Dental Medicine – Tufts University School of Dental Medicine
- General Practice Residency – State University of New York at Stony Brook
Professional Associations
- American Dental Association
- Massachusetts Dental Society
Originally from Boston, Dr. Roz likes to spend her free time with her family, friends, and dog, Parsa, enjoying the outdoors. Her hobbies include hiking, biking, exploring New England, reading, and gardening in her community garden plot.

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 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.

David Buczak, DMD
Endodontist
Dr. David Buczak graduated Boston University, where he earned both his Bachelor of Arts in Biochemistry and Molecular Biology. He then went on to attend Boston University’s School of Dental Medicine, where he received his Doctor of Dental Medicine. After practicing for a few years, Dr. Buczak earned his Master of Science in Dentistry from the Louisiana State University School of Dentistry. Dr. Buczak has contributed to various research cases in his continuing education of the field of Dentistry, including information to help patients deal with pre and post radiation therapy.
Education
- Boston University Goldman School of Dental Medicine, DMD
- Louisiana State University School of Dentistry, CAGS in Endodontics
Professional Associations
- American Association of Endodontists
- American Dental Association
- Massachusetts Dental Society
Awards & Honors
- Boston Magazine Top Dentist, 2020
- Upham’s Comer Health Center Award for Recognition of Service
- MassHealth Access Program Award

Clark Smith, DMD
Orthodontist
Dr. Clark Smith graduated Magna Cum Laude from Brigham Young University, where he earned his Bachelor of Science in Sociology and was the Valedictorian for the Department of Sociology. Dr. Smith then went on to continue his education at Harvard School of Dental Medicine and received his Doctor of Medicine in Dentistry Cum Laude. In his free time, Dr. Smith dedicates his time to volunteering and giving back to his community. Dr. Smith is a member of various Orthodontic associations, including the American Association of Orthodontics.
Education
- Harvard University School of Dental Medicine, DMD
- Brigham Young University, BS
Professional Associations
- American Association of Orthodontics
Awards and Honors
- Boston Magazine, Top Dentist 2018
- Boston Magazine, Top Dentist 2020

Jean Lamarre, DMD
General Dentist
Dr. Jean Lamarre is a graduate of Tufts University School of Dental Medicine, where he earned his DMD. Prior to attending dental school in Boston, Dr. Lamarre attended dental school at the State University of Haiti.
Dr Lamarre keeps himself abreast of developments in the field of dentistry through continuing education. Dr. Lamarre strives to provide quality dental care to his patients, and works closely with each patient to personalize their treatment. Dr. Lamarre’s number one priority is to always keep a smile on each of his patient’s face by providing quality dental care.
Dr. Lamarre educates his patients on how to improve and maintain their oral health; which is the window of the overall health. Dr. Lamarre is a compassionate dentist who carefully listen to patients. With a calm demeanor, polite mannerisms, he always handle patients with empathy and understanding.

Shailaja Thaker, DMD
Pediatric Dentistry
I am passionate about providing the highest quality of dental care to children in the most comfortable atmosphere possible. By doing this, I am helping my patients enjoy their dental experiences and learn great life-long oral habits. I am fully committed and dedicated to ensuring each little smile I treat gets nothing but the best and gentlest dental care available.
Education & Experience
- Tufts University School of Dental Medicine – Doctorate of Medical Dentistry, 2007
- Boston University School of Dental Medicine – Advanced Education in General Dentistry, 2008
- Boston University School of Dental Medicine – Certificate of Advanced Graduate Studies in Pediatric Dentistry, 2011
- Board Certified in Pediatric Dentistry 2012
Awards and Honors
- Boston Magazine, Top Dentist 2017
- Boston Magazine, Top Dentist 2018
- Boston Magazine, Top Dentist 2019
- Boston Magazine, Top Dentist 2020
I take several continuing education courses throughout the year so I can keep informed about the newest and most proven research and developments in the field of pediatric dentistry. It is very important that I stay at the cutting edge of my field’s advancements so that I am able to provide each of the little smiles I treat with the utmost the dental industry has to offer.
*If your request is a dental emergency, please call the office. New patient offer not valid for emergency appointments.