Amazon’s Music service, while it takes some hoops to jump through, actually does let you download music. Though I don’t know if that’s a general policy or on a per music/per artist basis.

Is there a context or theme for it? Honestly, if you just want to convey a pure healer, then just a cross would work. As was suggested, the rod fo Asclepius works, though better suited for more modern times or roles suited more towards a medical practioner rather than just a healer.