Lesbian, gay, bisexual, and transgender (LGBT) veterans report discrimination in health care, which may be associated with negative health outcomes/behaviors and has implications for LGBT identity disclosure to providers. Quality provider communication may serve to offset some of the deleterious effects of discrimination; however, no research to date has examined provider communication with respect to health among LGBT patients. Participants were 47 LGBT veterans who completed measures related to past health care experiences, experiences of discrimination in health care, perceptions of provider communication, and measures of anxiety, depression, post-traumatic stress disorder symptoms, and alcohol/tobacco use. The majority of LGBT veterans reported experiencing LGBT-based discrimination in health care, which was associated with higher rates of tobacco use and less comfort in disclosing their LGBT identity to providers. We also found evidence of moderation, such that high-quality provider communication appeared to buffer these associations. LGBT veterans face unique challenges with respect to receiving appropriate health care. The high frequencies of reported discrimination in health care is problematic and warrants further research and intervention. These results highlight the important role of provider communication, and the potential for quality communication to buffer against certain effects, particularly with respect to tobacco use and LGBT identity disclosure, which is an important protective factor.