BOSTON (CBS) – Dr. James O’Connell has been called by some the “Saint of Boston.”

He co-founded the Boston Health Care for the Homeless Program in the 1980s, and it has since become the largest free-standing treatment center for the homeless in the country.

O’Connell, who is also an assistant professor at Harvard University, is now out with a new memoir, “Stories from the Shadows: Reflections of a Street Doctor.” In it, he describes his nearly three decades of treating our city’s most vulnerable.

He sat down Tuesday night on MyTV38 with WBZ’s Paula Ebben and Liam Martin for an in-depth interview about his work.

You can learn more about BHCHP at their website: