What is the fine-grained topic of the following text: Robert Dean Bostic, PA-C, is one of only 220 certified physician assistants (PA-Cs) nationally to recently earn a specialty credential called a Certificate of Added Qualifications (CAQ) from the National Commission on Certification of Physician Assistants (NCCPA). Only return the topic.
Robert Dean Bostic earning a Certificate of Added Qualifications from the NCCPA.