Dr. Mary Dowd was a Yarmouth family doctor until several years ago, when she started moonlighting in primary care for prisoners at the Cumberland County Jail. She saw that most of the people in jail were there because of substance abuse. “I became fascinated by addiction. It was in my face every time I was there,” Dowd said. Intrigued and motivated to help others, Dowd left her family practice, and in 2008 started working in the detoxification center at the Milestone Foundation on India Street in Portland.