Alfred Zimmerman, 94, who was director of the old D.C. Board of Parole and Probation and who was a longtime hospital volunteer in Montgomery County, died Jan. 20 at Suburban Hospital in Bethesda.

He had complications from a fall, his daughter, Karen Hoffman, said.

Mr. Zimmerman worked for the Maryland state corrections department before joining the D.C. parole board in 1957. He became director in the 1960s and retired in the late 1970s.

Alfred George Zimmerman was born in Baltimore and served in the Navy before World War II. He rejoined the Navy during the war and served with an intelligence unit in Baltimore.

He used the G.I. Bill to attend the University of Maryland, from which he graduated in 1949.

He briefly worked for the FBI before joining the Maryland corrections department.

Mr. Zimmerman lived in Silver Spring before retiring to Leisure World, also in Silver Spring.

He volunteered for 30 years at what is now MedStar Montgomery Medical Center in Olney, primarily in the addiction and mental health center. In 2012, Mr. Zimmerman was the first recipient of the hospital’s Verna C. Ethridge Award for outstanding volunteer service.

His wife of 59 years, Mary Cordele Zimmerman, died in 2009.

Survivors include a daughter, Karen Hoffman of Arlington County, and two grandchildren.

— Matt Schudel