I have a tat on my shoulder blade and am planning on getting one on my outer thigh, but those are both quite easily hidden under dress clothes/scrubs. I've always wanted a tat on my wrist, but it's something that I can wait on. Honestly, I'll probably wait on it until I'm at least into my residency. I imagine there are some specialties that are more accepting of ink than others--you could probably get away with it as a surgeon far more than if you were a pediatrician. In the meantime, though, I'll happily ink the parts of my body that are easily covered up! This would be my advice, OP. It certainly isn't something I'd do until after I was finished with med school interviews, and I'm not sure it's worth worrying about in med school either.