Naiosh Digital University offers a PhD program in Biomedical Sciences, Public Health, and Occupational Health. The doctoral program involves coursework conducted over a period of up to two years, followed by a comprehensive examination to assess the breadth and depth of the student’s knowledge of his or her discipline, as well as the student’s scientific potential. Passing the results of the comprehensive exam in that the student is recommended to apply for candidacy, followed by research and writing a thesis within a maximum period of three to four years.