That's certainly one of my fantasies too (plus you could get reimbursed!).
As far as I can tell, it's not out there right now. It's just too risky to the SP, with a major investment of time, education and money, for them to bother.
Closest I got was a certified (not RMT) masseuse who would write me a receipt (and my old plan covered certified), but I think she's only legit now.