Because it is the standard by which doctors are chosen and paid. So certifications are about reassuring people. They give someone who doesn t have your training a tool in selecting a competent person to provide the right level of service. Many employers are dependent upon certification credentials to make hiring decisions. It may not always be in their best interest to do so, but certifications produce an instant credibility that is difficult to generate through anything you can say to someone who doesn t have your skills.
Certification courses aren t just about proving current knowledge.
You might even learn a few new tricks. This is sometimes the case and one of the situations where taking a certification course is an opportunity to add new information to real world experience. Preparing for the exam forces you to fill in any holes or knowledge about a product and how it works. Even without certifications, you re probably very busy. Between two candidates with the same level of experience, one with and one without certification, it only stands to reason that the one with the credentials will get the contracting assignment.