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Maine Periodontist Donald L. Theriault DMD Office Tour Video

Dr. Donald Theriault DMD periodontist of Coastal Maine Periodontics in Portland Maine is a Board Certified periodontist with over 25 years of experience in dentistry & highly trained in all aspects of periodontal diagnosis & treatment as well as implantology

Office Location:
595 Brighton Avenue
Portland Maine 04102
(207) 774-1471

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Front Desk Staff at Coastal Maine Periodontics

Here at the front office all patients are greeted with a smile and treated like part of the family. It begins with Jan and Beth, the exceptional people at the front desk. They''ll be sure to greet you with a smile and put you at ease. They can also help you with your appointments or scheduling questions, as well as insurance or financial matters.

Jan Morrison

Jan is the Office Manager and has 30 plus years experience in business administration which helps to keep the office running smoothly. In her spare time she enjoys garedning, reading, sewing and is very active in her church.  She will make you feel right at home and help answer any question you might have.

Beth Marshall

Beth works at the front desk and is a second assistant in the back, and you will often find her humming throughout the office as she assists the rest of our staff. She has a background in both English and Biology, and is pleased to be able to incorporate both aspects into patient care. Outside of office hours she enjoys reading, writing, knitting, and rock climbing.



Donald L. Theriault, D.M.D.

595 Brighton Ave
Portland ME 04102
Office: 207-774-1471

Coastal Maine Periodontics, Donald L. Theriault, D.M.D.,  •  595 Brighton Avenue, Portland, Maine 04102,  •  207-774-1471