Heffron, John Lorenzo was born on November 29, 1851 in New Woodstock, New York, United States. Son of Doctor Lorenzo and Mary A. (Pettit) Heffron.
Bachelor of Arts, Madison (now Colgate) U., 1873, A.M., 1876. Student College Physicians and Surgical (Columbia), 1879, 1880. Doctor of Medicine Syracuse University, 1881.
Universities Vienna and Heidelberg. Doctor of Science, Colgate, 1909.
Practiced at Syracuse. Instructor in histology, 1882-1885, professor histology, 1885-1887, materia medica and therapeutics, 1887-1895, clinical medicine, since 1895, dean, October 1907-1922, dean emeritus, College of Medicine, Syracuse University. Visiting physician St. Joseph’s Hospital, 1882-1887.
Consulting physician Hospital for Women and Children, since 1888. Visiting physician, 1884-1907, physician-in-chief, 1907-1915, consulting physician Hospital of the Good Shepherd. Alumnus trustee Syracuse University, 18 years.