Certifications Required: Hold active CMA/RMA/CCMA/NCMAcertification or pass exam given by any credentialing agency for medical assistants to be considered a “credentialed medical assistant” or hold an active EMT or Paramedic Certification. The Credentialed Medical Assistant (CMA) or EMT assists in coordinating primary health care services to a large outpatient client population under the direction of a physician, mid-level provider, RN or Licensed Practical Nurse (LPN).