Mel Greenberg was born in Worcester on May 4, 1937. He received his B.A., magna cum laude, from Clark University and his J.D. from Boston University School of Law in 1961. Justice Greenberg began his legal career at Teshoian, Greenberg & Drapos, later becoming partner. While there, he was general counsel to the Massachusetts Civil Liberties Union.
Justice Greenberg was appointed to the District Court of Massachusetts in 1977 and then to the Superior Court in 1983. Governor Michael Dukakis appointed him to the Appeals Court in 1990, where he served until he reached the mandatory retirement age in 2007. During his tenure as associate justice of the Appeals Court, he was the program chair of the New England Appellate Judges' Mediation Program.
Justice Greenberg has taught at several schools, including Boston University School of Law, Clark University, and the National Judicial College in Reno, Nevada. He has also written extensively on the areas of trial ethics, appellate practice, and sanctions. He is currently counsel at Seder & Chandler, LLP.