CMA stands for Certified Medical Assistant, a credential awarded by the American Association of Medical Assistants (AAMA). A CMA is a healthcare professional trained to handle both clinical and administrative tasks in medical offices, hospitals, and clinics. It’s one of the most versatile roles in allied health, and with a projected job growth of 12 percent from 2024 to 2034, it’s also one of the fastest-growing.
What a CMA Actually Does
Medical assistants are cross-trained to work on both sides of a healthcare practice: the exam room and the front desk. On the clinical side, a CMA takes patient vitals and medical histories, prepares patients for exams, assists physicians during procedures, draws blood, performs basic lab tests, administers injections (including vaccinations), handles wound care, and runs electrocardiograms. They also explain treatment procedures to patients, provide instructions about medications and special diets, and transmit prescription refills as directed by a physician or other licensed provider.
On the administrative side, the work looks very different. CMAs answer phones, schedule appointments, welcome patients, update and file medical records, code and fill out insurance forms, handle billing and bookkeeping, arrange hospital admissions and lab services, and manage correspondence. In smaller practices especially, one person may bounce between these roles throughout a single shift.
How CMA Certification Works
To sit for the CMA exam, you need to graduate from (or be about to complete) a medical assisting program accredited by either the Commission on Accreditation of Allied Health Education Programs (CAAHEP) or the Accrediting Bureau of Health Education Schools (ABHES). Students can register for the exam as soon as all classroom coursework is done, even before finishing their practicum or externship. Recent graduates have 12 months after graduation to apply.
There are alternative paths. Medical assisting educators who have logged at least 1,000 hours in a postsecondary program can qualify. Previously certified CMAs who let their credential lapse can also re-enter through the exam. And an alternative pathway exists for graduates of qualifying postsecondary medical assisting or apprenticeship programs that meet specific criteria.
The exam itself consists of 200 multiple-choice questions divided into four 40-minute segments. The heaviest emphasis is clinical: 59 percent of questions cover clinical competency, while general healthcare knowledge and administrative topics each make up roughly 20 percent.
Keeping the Credential Active
CMA certification isn’t permanent. You must recertify every 60 months (five years), which requires earning 60 continuing education units (CEUs). At least 30 of those must come from AAMA-approved courses, spread across three categories: 10 in administrative topics, 10 in clinical topics, and 10 in general healthcare knowledge. The remaining 30 can come from any combination of those categories. Alternatively, you can recertify by retaking the exam.
Scope of Practice Varies by State
One important detail that trips people up: medical assistant scope of practice laws differ from state to state. Some states explicitly define what medical assistants can and cannot do. Others don’t mention medical assistants by name at all, instead classifying them as unlicensed personnel. This means the specific tasks you’re allowed to perform, particularly clinical tasks like administering injections or drawing blood, depend on where you work. Employers are responsible for ensuring their medical assistants operate within state law, but it’s worth understanding the rules in your state before assuming what the job entails.
CMA vs. RMA: Two Credentials, One Role
The CMA (AAMA) isn’t the only medical assistant certification. The Registered Medical Assistant (RMA) credential, offered by American Medical Technologists (AMT), is another nationally recognized option. Both carry accreditation from the National Commission for Certifying Agencies, and both are credible in the healthcare industry.
The differences are mostly structural. The RMA exam has 210 multiple-choice questions with a two-hour time limit, compared to the CMA’s 200 questions across four timed segments. The CMA credential, established in 1963, is often considered the gold standard due to its longer history and stricter eligibility requirements. The RMA, offered since 1972, is also well-respected but may carry slightly less weight in highly competitive job markets. Some employers have preferences based on regional standards, so it’s worth checking what’s common in your area.
Salary and Job Outlook
The median annual wage for medical assistants was $44,200 as of May 2024, according to the Bureau of Labor Statistics. Employment in the field is projected to grow 12 percent from 2024 to 2034, which is significantly faster than the average for all occupations. That growth is driven by an aging population, expanding outpatient care, and the ongoing need for support staff in physician offices and clinics. For someone looking for a healthcare career that doesn’t require a four-year degree, the CMA path offers a relatively quick entry point with strong demand.