The National Commission on Certification of Physician Assistants is the only certifying organization for physician assistants in the United States. Established as a not-for-profit organization in 1974, NCCPA is dedicated to assuring the public that certified PAs meet established standards of clinical knowledge and cognitive skills upon entry into practice and throughout their careers. All U.S. states, the District of Columbia and the U.S. territories have decided to rely on NCCPA certification as one of the criteria for licensure or regulation of PAs. As of Dec. 31, 2021, there were approximately 159,000 Certified PAs. Learn more about the NCCPA.