He was a member of the New York Medical Association in 1807.
From the section titled "History of Waddington, NY", in Our County and Its People,
a Memorial Record of St. Lawrence County, New York, Edited by: Gates Curtis, The Boston History Company, Publishers, 1894: "The first physician in Waddington was Dr. Allen Barber, who came in 1802, and was drowned on the 6th of January, 1806, while crossing the St. Lawrence. He was succeeded in 1812, by Dr. James A. Mott, who passed his long life here in active practice."