1 Kendall Square, Suite B-3104
Cambridge, Massachusetts 02139

Our Staff

Alex Callejas, D.M.D.

After completing his undergraduate degree, Dr. Callejas attended Boston University School of Dental Medicine. He received his dental degree in 1998. Dr. Callejas has been at the practice since 2003.

Highly regarded by peers and patients alike, Dr. Callejas is a member in good standing of the American Dental Association, the Massachusetts Dental Society and the Middlesex Dental Association.

When not practicing dentistry, Dr. Callejas enjoys playing chess, tennis and spending time with his family.

Jennifer Percy, D.M.D.

Dr. Jennifer Percy grew up in the Toronto area and obtained both a Bachelor of Science and Bachelor of Arts from the University of Guelph. She attended the University of Connecticut School of Dental Medicine and graduated in 2013. Dr. Percy spent a year furthering her dental education with a general practice residency at St. Joseph’s Hospital Health Center in Syracuse, NY and has been in practice at Kendall Square Dental Associates since 2014.

Dr. Percy is a member in good standing of the American Dental Association, the Massachusetts Dental Society and the Middlesex Dental Association.

Dr. Percy enjoys spending time with her husband and daughter, playing kickball and hosting game night.

Claire McCarthy, D.M.D.

Dr. McCarthy is a general dentist who focuses on providing high quality, comprehensive care to her patients. She enjoys listening to her patients to really understand their concerns, and goes out of her way to make sure that every patient that she cares for has a positive experience.

Growing up in Wayland, MA, Dr. McCarthy has known that she wanted to be a dentist since she was in the seventh grade. On the path towards that goal she attended Georgetown University where she earned a B.S. in Biology, before continuing on to attended Tufts University School of Dental Medicine where she earned her DMD. While at Tufts, Dr. McCarthy did research on Treacher Collins Syndrome, a genetic craniofacial disorder, and she was awarded the Tufts Alumni Clinical Excellence Award in General Dentistry. While in her fourth year at Tufts she had the honor of being selected to participate in the Massachusetts Dental Society Leadership Institute.

After graduating from dental school, Dr. McCarthy spent a year at Stony Brook University completing a general practice residency. There she expanded her knowledge of general dentistry, implant restorations, and emergency dentistry. She then returned to her home state of Massachusetts and has been working in private practice ever since. 

Dr. McCarthy is an active member of the Massachusetts Dental Society (MDS) and has served on the Committee on Ethics, Council on Communications, New Dentist Committee, and as co-chair of the Membership Committee.

Outside of the office, Dr. McCarthy can often be found spending time with family, friends, and her fiance, who is also a general dentist. She also enjoys traveling, elaborate baking projects, and reading along with her book club.