Pennsylvania now has a Massage License requirement. I suggest that you check to make sure that your therapist has their license.

You might also check to make sure that in a place that is a bit shady that the licenses are not altered photocopies.

On this website you can check on the statis of ALL STATE licenses with this verifier!

Not a bad thing to do before you pay for someone servies. 

http://www.licensepa.state.pa.us/