Occupational Health Services Driving Under The Influence Program is an outpatient drug rehab located in San Marcos that offers substance abuse treatment and other drug rehab services. Located in San Marcos, California, Occupational Health Services Driving Under The Influence Program provides special treatment drug and alcohol rehab programs for women and DUI/DWI offenders. Occupational Health Services Driving Under The Influence Program accepts self payment as payment for drug and alcohol rehab services. Occupational Health Services Driving Under The Influence Program offers drug treatment programs in ASL and Spanish.