What do the initials behind my therapists name stand for? What are the differences?

M.S.P.T. = Master of Science in Physical Therapy
M.P.T. = Master in Physical Therapy
D.P.T. = Doctor of Physical Therapy
P.T.A. = Physical Therapy Assistant
Tech = Physical Therapy Tech (assists PT & PTAs with patient care)
Cert. MDT = Certified in the McKenzie Method
MBA = Masters in Business Administration