Q. When referring to two doctors in a letter, should they be addressed as “Dr. A and Dr. B”? Or “Drs. A and B”?
A. For extra formality, use Drs., which echoes the old-fashioned Messrs. (the plural of Mr.) and would be especially well suited to the salutation. But if your letter isn’t especially formal, or if you’re simply naming the two doctors (as in the body of the letter), use Dr. before both names.