It's not a prefix in the context in which you're using it. It's merely spelling a word incorrectly based on how some people say it. It has zero semantic value. It is completely unrelated to the prefix a which just means without.
For example the median expected annual pay for a typical Medical Records Technician in the United States is $32,140 so 50% of the people who perform the job of Medical Records Technician in the United States are expected to make less than $32,140.
Medical Technician Salary: According to the Bureau of Labor Statistics, the median annual medical technician salary is $40,240. Salaries can range from $25,210 for the bottom 10% to $58,910 for those in the 90th percentile. The state with the highest average salary is Rhode Island with an annual mean salary of $57,700.edical Technologist Salary: According to the Bureau of Labor Statistics, the median annual medical technologist salary is $59,460. Salaries can range from $39,940 for the bottom 10% to $80,820 for those in the 90th percentile.