Thanks for input all. Based on advice here and elsewhere I am going with Canon PowerShot ELPH 310 HS which suggested retail $260. A lot of good comments online about its good macro function.
BTW if anyone is wondering, the cheapest Canon Macro lens for a DSLR is $300, plus the ring light is $550. Add the camera itself and you are well into the $1000s - minimum.
Regarding the iPhone, it is agreeably the easiest, most convenient solution (especially since you can text consult photos to your staff), but I think some could argue it's a little less professional. A friend just told me that his program made them sign statements agreeing not to use smart phones to photo patients (or store their data in spreadsheets, etc on them either), so I know I'm not alone.
Again thanks for the input