What is it about [ENTITY REPRESENTED BY INTERVIEWER] that made you select us?
This group can hire someone else easily enough--so this is your chance to say that you'd be good for the organization but also why it would be good for you, too. Everyone likes a win-win, and that can set a motif of your being on the 'same page' as this group. The cornerstone of this approach is to use the 'Mission Statement' or 'Vision' of the group if there is one. If there isn't, you can simply paraphrase the generic characteristics of all Mission Statements and Visions, i.e., striving for excellence, serving the needs of your patients, etc. It's corny, but the question begs for flattery. Give it. Tell the interviewer that their values align with your own and that's the key, in your mind, for the rest of your professional life.
"I know that there is a group of physicians in which their values align with my own. I've really done a lot of research and your reputation for putting the patient first means I know I'd be very happy here and would be motivated to contribute what I can along the lines of those values."
