The rate of tuberculosis in patients receiving methadone treatment is significantly greater than the general population. The stabilization of former injection drug users occurs within methadone maintenance treatment programs, indicating the suitability of these sites for directly observed therapy (DOT). There are formidable barriers to the success of DOT, some are institutional, others patient-related. Strategies to address these obstacles need to be implemented. The integration of DOT into existing programs required support from the New York State Department of Health, institutional commitment, as well as continued staff and patient education and training.