Hi and thanks for the designs. I really like parts of all of these. Let me offer some more detailed feedback on each:
#15: I love the color scheme here - I think it's the only one I've gotten so far that departed from blue and red. I think it's really sharp-looking. OK, the cross - yes, it's representative of medicine, but I think it's going to be hard to stylize a plain cross enough to make it appealing without it being weird. I had several designs done around a cross (before trying logo tournament), and nothing has grabbed me. So the message on this one is: I love the color but would prefer the symbol to be something other than a cross.
#16: Better attempt to do something withe cross on this one - the problem is, none of my clients or prospective clients are cardiologists, so the heart doesn't quite fit for my clientele. Also like the color scheme on this one quote a lot, and I prefer the bolder text to the font on #15.
#17: Same feedback as #16 on the symbol - the "monitor" is kind of a universal symbol for healthcare, but more particularly for emergency medicine or any specialty that would monitor heart activity. Again, this is just not a great fit for my clients (cosmetic surgeons, podiatrists, medical spas, opthamologists, dermatologists)...all these specialties deal with mostly elective procedures, so there's never really any kind of emergency component.
Overall, I like the look of all these, I'm just looking for a graphic symbol in them that ties in to my clientele better.