I've worked with several healthcare professionals who had some major artwork going on. Mostly that was when I worked in the OR. Lots of people have tattoos, including patients. In fact, my brother got a big one on his upper arm when he graduated nursing school (he was a real estate appraiser). It definitely shows from under his scrub sleeve, but nobody has ever said anything negative to him. And he works in the ED, so he sees a lot of people. Since you said it's tasteful and not vulgar, it shouldn't be an issue.