DOT Drug Testing Phoenix AZ - OccuMed Diagnostics is an Arizona-based, locally owned and operated occupational health clinic specializing in the three basic, yet essential occupational health services required to operate under DOT compliance 49 CRF Part 40, or the capacity to operate a drug and alcohol free workplace; 1) DOT Physical Exams to obtain a DOT Medical Card or CDL, 2) DOT & non-DOT Drug Testing, 3) DOT & non-DOT Alcohol Testing. This means that you, as an employer or operator/individual, no longer have to go to one facility for a DOT Physical and another for a drug and alcohol test.