Originally from Kosice, Czechoslovakia, Dr. Mathern was an internist at the University of Nevada Medical Center QuickCare Clinic in Laughlin, Nevada, and at the Mohave Valley Hospital and Medical Center in Bullhead City, Arizona. In addition to specializing in oncology and hematology, he has extensive experience in a general practice. A former captain in the Czechoslovak Army, before pursuing a medical career, Dr. Mathern was a nationally syndicated radio reporter for the Czechoslovak National Broadcast Co., a film critic and a downhill skiing instructor.
Dr. Mathern's research has been widely published in journals including Journal of Clinical Immunology, Cytogenetics and Cell Genetics, Journal of Immunology, Pediatric Research and the Journal of Neuroimmunology.