During my pedicure, I was impressed that when they realised that I should see a doctor about my toe-nail they spoke to be about my options which included coming back another day for the colour. This meant that the doctor could check my nails in their natural state. I don't think many salons would do this. There is the much easier option to paint over whatever it is and have everyone be happy.
I found Kali and Evelyn to be very honest and caring.