Discussions sur MTBC Medical Billing Service

Is it normal for the doctor to need to get and show eob's and point out that things are denied and the doctor look-up and educated the company, and the company admit they just needed education, on bills they did not work over a year ago? should the doctor need to get the ndc # in response to a quesstion about not having gotten paid on something form about a year ago when the doctor points out the error based on an eob the patient brought in complaining about? is it normal to bill for ramazicon when b12 was given on a housecall for a spinal cord injury patient?