Dr. can write a prescription for aerobika. I have the AffloVest. It's portable and I like it. I didn't research the others and it is good to do research to find out which one might be best for you. I would then call that company and ask what are the requirements for your insurance to pay for it (having productive cough; not getting all up when you nebulize, etc.). I would then go the extra mile and ask them what must your doctor write- if they could give you the wording that is acceptable to the company. You are not asking anyone to commit fraud; you just want to know exactly what must be written for reimbursement purposes. If for some reason your pulmonologist or ID doctor doesn't follow through, you could have your primary fill out appropriate forms and put in writing what must be there for your insurance to cover it. Vests are enormously expensive so you must get it covered by insurance.