About Your Dentist

Brendan J. Hallissey, DMD

"Let us always meet each other with smiles, for a smile is the beginning of love." - Mother Teresa

My Mission

“My goal is to provide individualized, patient-centered care of the highest quality in a stress-free, comfortable environment.”


University of Connecticut School of Dental Medicine – Farmington, Connecticut Doctor of Dental Medicine

Bowdoin College - Brunswick, MaineBachelor of Arts in Biochemistry

Dedicated to Professional Excellence

In order to continually improve and better serve his patients, Dr. Hallissey is dedicated to continuing education and keeping up to date with the latest techniques and technologies available. After receiving his DMD from the University of Connecticut in 2006, Dr. Hallissey worked with all aspects of dentistry, including the restoration and placement of implants at the Penobscot Community Health Center in Bangor, Maine. He also taught implant placement, bone and soft tissue grafting, and surgical extractions at the Penobscot Community Health Center General Practice Residency, where he served as the Director of Clinical Services. He has also held adjunct faculty positions with A.T. Stills in Arizona, Boston University, University of Iowa, University of North Carolina, and Tufts University. He has also completed the MAXI Course through the American Academy of Implant Dentistry.

Life & Hobbies

Dr. Hallissey is originally from Machias, Maine. In August of 2011, he moved to Portsmouth, New Hampshire to enter private practice. He is an avid outdoorsman and enjoys gourmet cooking with his wife, Alexis. In the winter, Dr. Hallissey can be found indoors playing volleyball and hockey.

Hannah Sue, DMD

My Mission“A smile is happiness you'll find right under your nose." - Tom Wilson

“My goal is to help every patient maintain their dental health by providing excellent individualized and compassionate dental care.”

Education & Continuing Education

Medical University of South Carolina College of Dental Medicine – Charleston, South CarolinaDoctor of Dental Medicine

University of South Carolina – Columbia, South CarolinaBachelor of Science in Exercise Science

Dr. Sue has extensive training in all aspects of general dentistry. She regularly participates in local and out-of-state continuing education courses to stay up-to-date with the latest technology and treatment planning.

Professional Memberships

Dr. Sue is an active member of the American Dental Association, the Academy of General Dentistry, and the Charleston Collaborative Study Club.

Life & Hobbies

Dr. Sue is a native of Greenville, South Carolina. In her spare time, she volunteers at several free dental clinics. Outside of dentistry, she loves exploring Charleston with her fiancé and spends much of her time away from the office hiking, running, skiing, and paddle boarding.