I've been working on various combinations, and NYC had at least 4 viable area codes one can have assigned to a Manhattan address (212, 646, 917 and 347), and that might work. Phone numbers in the States include a 3-digit area code and 7 digit phone number.
So far I've come up with the following 7 letter possibilities:
GINA PHD
PHD GINA
GR SNAPE
DOCTOR G
GINA DOC
and my "maiden name" G xxxxxx
Can you think of any others?
AT&T doesn't offer phone number pics anymore. I transferred my number over...seemingly via portkey!