Dr. Walsh graduated from St. Thomas College in St. Paul, Minnesota with degrees in biology, chemistry and psychology. He than attended and graduated from Creighton University Medical School in Omaha, Nebraska as a physician. Following internship at Ancker hospital in St. Paul he served two years in the Air Force at Offutt Air Force Base in Nebraska where he founded the base’s allergy clinic. Released from the air force with an honorable discharge, he attended and graduated from a fellowship in allergy at the Mayo Clinic in Rochester, Minnesota. Passing the tests of American Board of Allergy and Immunology he received certification as a specialist in the diagnosis and treatment of allergic diseases. He is also a fellow of the American College of Allergy, Asthma and Immunology. Dr. Walsh practiced as a consultant allergist with special interest in food sensitivity and allergic headaches. Prior to retirement he joined HealthEast Care System and founded its allergy clinic.