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PA is Physician's Assistant, C means he is certified, and the MS means he holds a master's degree. I would think this person is well qualified to give most medical advice. He would work directly under a physician and report to him. JuliusHere Â· 9 years ago.
C.F.R. 413.65. Physicians will use POS code 11 (Office) when services are performed in a separately maintained physician office space in the hospital or on hospital campus and that physician office space is not considered a provider-based department of the hospital as defined in 42.C.F.R. 413.6.