e20614 Background: The use of complementary and alternative medicine (CAM) is growing as the oncology patient (pt) population increases. The purpose of this study was to assess current CAM practice patterns of oncology healthcare providers. Methods: We distributed a 20-page anonymous survey to all physicians (), mid-level practitioners, clinical pharmacists, and dietitians at a comprehensive cancer center. The survey examined factors influencing a provider's inquiry towards pt CAM use, as well as current perception and use of 15 different CAM modalities, such as meditation, acupuncture, chiropractic, and herbal therapy. Descriptive statistics, chi-square, and Student's t-test were used for analysis. Results: 671/1,601 (42%) surveys were returned with s comprising 50% of the responses. 83% of respondents believed CAM has a role in cancer care. Over 70% indicated that massage, meditation/prayer, relaxation techniques, and acupuncture have potential uses, primarily to relieve symptoms not controlled by conventional therapy (tx) (47%) and as psycho-social-spiritual support (47%). Respondents estimated 28% of pts utilize CAM; 25% of respondents and 19% of pts initiated CAM discussions during pt visits. Those in medicine-based fields were more likely to discuss pt CAM use compared to surgical specialities (30% vs. 19%, p<0.01), but there was no significant difference in comfort level to discuss CAM modalities. s were less likely to discuss CAM use compared to all other providers (21% vs. 31%, p<0.01). s were also less comfortable discussing herbs (37% vs. 51%, p<0.01), massage (73% vs. 82%, p<0.05), meditation/prayer (71% vs. 82%, p<0.05), and relaxation tx (67% vs. 77%, p<0.01) compared to all other providers but more comfortable discussing acupuncture (63% vs. 55%, p<0.05). Respondents cited lack of knowledge in CAM as the primary reason for not discussing CAM with pts. Conclusions: Past studies estimate that >50% of patients use at least one form of CAM. Our study suggests that oncology providers critically underestimate the number of patients incorporating CAM into their treatment. Improving provider education on CAM therapies is essential to improve patient-physician communication regarding potential risks and benefits of CAM with traditional cancer therapies. No significant financial relationships to disclose.