The State of the Medical Services Professional was a study conducted by National Association of Medical Staff Services (NAMSS). It's a well-written perspective on how far the Medical Services Professional (MSP) has evolved over the years and where it's headed. When I first entered the credentialing field in the very early 90's, it was by happenstance. I was working for the Vice President of Medical Affairs (VPMA) of a newly formed healthcare system, two neighboring hospitals.