Where is the Internal Medicine Department?
Naika wa doko desu ka.
internal medicine, i.e. treatment by medical procedures rather than surgical procedures; department of internal medicine (hospital, etc.)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
where; what place; how much (long, far); what extent
indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way