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Leonard Brennan, DMD


Co-Director of Harvard’s Dental Geriatric Fellowship Program

Leonard Brennan, DMD has practiced general dentistry in Portland, Maine for more than thirty years. He is the co-director of the Harvard University's Dental Geriatric Fellowship Program and a clinical instructor in their Department of Oral Health Policy and Epidemiology.

Through teaching and research on the relationships of oral disease to systemic disease, he strives to improve the oral health of Maine seniors. Finding reasonable solutions for health problems fuels his enthusiasm. He passionately believes that education through an interdisciplinary health care model is key to improving oral health care for all older adults.

Dr. Brennan attended Tufts University School of Dental Medicine and completed a Harvard University Geriatric Dental Research and Teaching Fellowship Program. He was recognized for his postdoctoral work at Harvard as the recipient of the Dr. James Dunning Award for excellence in biomedical research and teaching. He completed a second post-doctoral fellowship in Medicine and Palliative Care at Mt. Sinai Hospital in New York and is a graduate of the American Society on Aging Leadership Institute in San Diego, California.

Dr. Brennan is guest editor for Dental Clinics of North America's Dental Geriatric Edition and the author of the chapter “Cognitive Impairment in Older Adults.” Nationally, Dr. Brennan was a presenter on “Oral Health and Systemic Disease” at the American Society on Aging Conferences in Washington and San Diego. In 2009, he traveled to northern Haiti to begin a geriatric assessment of the population of Cap Haitien.

Since 1982, he has taught oral health for the Medical Geriatric Fellowship Program at Maine Medical Center. He has had the opportunity to teach at Harvard University Medical and Dental Geriatric Fellowship Programs, Harvard University School of Dental Medicine, the University of New England Medical School, Northern Haiti Dental Society, and at the 2013 Maine Geriatric Conference. Locally, he has been involved in many community dental and medical organizations and as a volunteer in the Dental Lifeline Network for which he was nationally recognized by CNN Money magazine with the 2014 "Hero Award" for his work with the elderly and other fragile individuals.