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Mark Johnson is a physician professional located in La Jolla, CA. They specialize in physician assistant. With over 19 years of experience, they bring deep expertise to every patient.
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Mark Johnson is a physician assistant with 19 years of clinical experience in La Jolla, California. He holds PA-C credentials and maintains license number PA21728. Johnson brings nearly two decades of medical practice to patient care and clinical decision-making.
PA-C stands for Physician Assistant–Certified. This credential indicates Mark Johnson has completed graduate-level medical training, passed a rigorous national certification exam, and maintains ongoing continuing education requirements. Physician assistants work under physician supervision and are trained to diagnose conditions, order and interpret tests, and prescribe medications within their scope of practice. The PA-C designation signals board certification and demonstrates commitment to professional standards in clinical care.