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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.
Home Career Central Become a PA 0 A PA is a nationally certified and state-licensed medical professional. PAs practice medicine on healthcare teams with physicians and other providers. They practice and prescribe medication in all 50 states, the District of Columbia, the majority of the U.S. territories and the uniformed services.