Dr. Hartmann graduated from the University of Minnesota, College of Veterinary Medicine in 1978. After four years in practice, he returned to the U of M where he completed a pathology residency in the Veterinary Diagnostic Laboratory and received his Master’s Degree in Veterinary Anatomic Pathology. He joined the U.S. Department of Agriculture, Veterinary Services as a Veterinary Medical Officer in 1985.
In 1988 he joined the Minnesota Board of Animal Health as a senior veterinarian in charge of ruminant disease programs. Hartmann was appointed Board of Animal Health executive director and state veterinarian in 2001. Under his direction, the Board has detected and fought against diseases such as chronic wasting disease, influenza in poultry and bovine tuberculosis.