XX no O sama de irasshaimasune
XXの Oさまで いらっしゃいますね
You're Mr./Ms. O of XX, aren't you?
Example
ABCびょういんの たなかさまで いらっしゃいますね。
You're Mr./Ms. Tanaka of ABC Hospital, aren't you?
XX no O sama de irasshaimasune
You're Mr./Ms. O of XX, aren't you?
ABCびょういんの たなかさまで いらっしゃいますね。
You're Mr./Ms. Tanaka of ABC Hospital, aren't you?