Practice overview
Commonwealth Dental Group is a general dental practice at 400 Commonwealth Avenue, Suite 3, in Boston’s Back Bay. The practice describes itself as a group of general dentists working together, with a reputation for excellence, honesty and cutting-edge technology, and says all of its dentists have been recognized by their peers as “Best of Boston.” Several of its hygienists have been with the practice since the 1990s. The practice has appeared in Boston Magazine’s Top Dentists listings for cosmetic dentistry in multiple years, most recently 2026.
Dentists
Dr. Tina Giannacopoulos, DMD, the practice’s dental director, earned her dental degree summa cum laude from Boston University and is a member of the Omicron Kappa Upsilon honor society. She holds a BSc from the University of Alberta and received a Best of Boston award in 2018.
Dr. Mark Mizner, DMD, graduated from Tufts School of Dental Medicine in 1980 and focuses on cosmetic and restorative dentistry. He has been involved with the Yankee Dental Congress since 1985 and received the Massachusetts Dental Society’s Volunteer Hero Award in 2005.
Dr. Colin Brady, DMD, earned his DMD at Boston University after a biology degree at Boston College, and completed a General Practice Residency at Montefiore Hospital in the Bronx. He received the Massachusetts Dental Society’s “10 Under 10” honor for portable dentistry with underserved populations.
The practice website also introduces Dr. Maria Baquerizo, endodontist Dr. Miguel A. Roque (DMD, MMSc and endodontics certificate from the Harvard School of Dental Medicine), Dr. Lucas Patrick, Dr. Anastasios (Tasos) Sakellariou (clinical assistant professor of anesthesiology, critical care and pain medicine at Tufts), Dr. Shirley Austin (Boston University Goldman School graduate) and Dr. Barry (cum laude graduate of Tufts University School of Dental Medicine).
Services
Cleanings and checkups; digital X-rays and 3D i-CAT scans; Solea dental laser; Invisalign and orthodontics; fillings, crowns and bridges; implant restorations and All-on-4 teeth in a day; CEREC same-day crowns; veneers, teeth whitening and cosmetic dentistry; prosthodontics; periodontal treatment; early dental care for children; sedation dentistry; and emergency dental care.
Hours and contact
Monday, Tuesday and Thursday 8:00 AM to 5:00 PM; Wednesday 8:00 AM to 6:00 PM; Friday 8:00 AM to 2:00 PM. The home page mentions evening and Saturday appointments, so ask about availability.
400 Commonwealth Ave, Suite 3, Boston, MA 02215
Phone: (617) 266-8770. Online scheduling is available.
Parking: the practice warns that construction on Newbury Extension has made parking extremely limited, so allow extra time.
Details sourced from the Commonwealth Dental Group website (home, contact, dentist, team and office tour pages), checked November 10, 2026.