Every legitimate medical billing school will only certify you if you complete the course, you should not be misled by any school or program. If you are serious about getting into the medical field as a medical biller or a medical billing specialist, it is highly recommended you take short courses in this field since there is high demand for these professions in the market right now. As you look for a school, be sure to check other related courses offered in case you wish to combine with a related program like medical coding.