Does anyone know the answer? We started our own billing company. So far we have 2 new clients. My questions is: If our clients have their own provider id#'s for the insurance companies they accept,so we have to enroll individually with each insurance company to send our claims electronically? They have their NPI, Medicare ID and Bcbs id#. Or can we just bill them thru our Office Ally clearinghouse using our submitter id#. Hope someone can understand and give me an answer. Thanks