A prescription is required for any of the CPAP or BiLevel (BiPap) therapies. A prescription is also required for most supplies. Masks and headgear are “legend” items and are regulated by the State Department of Health Services in California. A physician must prescribe all legend items. Any items to be considered for re-imbursement through your insurance requires a prescription. Filters and tubing can be purchased without a prescription.All prescriptions that we receive are verified based on the identification of the physician’s UPIN number and license number. We will only accept prescriptions from a physician licensed to practice in the United States.