I want to start a medical billing company. My question is this , I have a doctors office that wants me to bill for dme for them. Do I need a provider number and do I need to be in network with medicaid or other insurances to bill for the item. What I mean is they want me to give the patient say a knee brace and then I want to be able to bill for it . So maybe it is a stock and bill. Can I do this or do I need to get a dme provider number to delivery and bill. I can not find any to help with this. Any information would be helpful.