We hope this page provides useful information that helps make your visit to the NIH Clinical Center as smooth as possible. Also, below are a few key Clinical Center telephone numbers: Admissions: (301) 496-3141. Hospitality: (301) 594-3301. Language Interpreters: (301) 496-2792. Medical Records: (301) 496-3331. Outpatient Pharmacy: (301) 496-2866..