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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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Complimentary language
assistance services.

Staff at Coastal Maine Periodontics

Business Manager – Doreen





Doreen, who is Dr. Theriault's wife, has been involved with the practice since the beginning.  Actually she took accounting courses while Dr. T was in Dental School. She frequently works non-traditional hours, balancing the books late at night thanks to “Quick Books” and doing payroll at 5:30 am.  This has enabled her to be very involved in her children’s lives.  She has served on her children’s school board for years and is still involved in various committees. Doreen also is an ESL tutor as well supervises the Student Program for Bible Study Fellowship.  She enjoys travel especially if it involves seeing one of her children .



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