As a patient of a Pain Management Specialist I can tell you that a wallhanging with a spine,x-rays, and needles would be anxiety producing. I was an x-ray tech for almost 15 years before I became disabled and it would cause me stress to look at that. I can only imagine the stress it would generate in a non-medical person. If it is for his private office fine, but for the waiting room I would do a more generic wallhanging. A Bargello in soothing colors would be a nice calming thing to look at. I'm sure you will find the right pattern, but please don't do one with needles and x-rays.