Born in Jersey City, NJ, he was the son of the late Max Hermann Hallmann and Marguereta (Rothaupt) Hallmann.
Dr. Hallmann graduated from Tufts Medical School in 1955 and worked as a Radiologist until his retirement in 1995.
He is survived by his children, David M. Hallmann and Patricia Sweriduk, four grandchildren, Christine Mitchell, Michael Frey, Stephen Sweriduk and John Sweriduk. He was predeceased by his daughters, Leslie Anne Frey and Kathryn Alice Hallmann.
Funeral Services have already taken place and were entrusted to Wilbur-Romano Funeral Home, Warren.
In lieu of flowers memorial contributions may be made to, Tufts Medical School, 145 Harrison Ave, Boston, MA 02111.