Thanks so much for your reply.
I have, in fact, an excel sheet with hundreds of doctor's names and addresses.
I'm not keen on having to re-type this information in building blocks or autotext.

Is there a way to retrieve an address automatically, if I type a doctor's name in the document?

Thanks, Vic

I use Mail Merge with the information in an Excel sheet. Letter is a new document based on a template linked to the spreadsheet.

"Find Recipient" and put in the last name of the doctor. Press Enter.
Name, address, greeting, all typed into the letter using merge codes.

Then I change it to a normal Word document (under Start Merge) and type your letter.