Charles Williams. His primary practice is as , also practicing as a Technician, Cardiology, a Spec/Tech, Cardiovascular: Cardiovascular Invasive Specialist, a Radiologic Technologist: Cardiovascular-Interventional Technology, a Radiologic Technologist: Cardiac-Interventional Technology, a Radiologic Technologist: Radiography, a Radiologic Technologist: Vascular-Interventional Technology, and a Physician Assistant: Medical.