Wow most people have no idea, Zynex has been and is still billing for units (up to 500 mnthly)that have been returned and supplies(up to 240 mnthly) that never get shipped out. They do this to Anthem as well as many other insurance providers. We wonder why health insurance is sky rocketing. What most patients don't realize is that their medical and personal information is at risk everyday there. Zynex doesn't follow HIPPA regulations. Many paient files are left in unsecured locations and computers logged on to the database are often left open and running. Patients don't know that their file containing SS# date of birth and many other privacy protected things can be pulled by any employee and there is no way of knowing who pulled it what they did with it or if it was returned. It may have even left the property. There is no tracking system in place to verify who has a patient file or why. If a patient file is missing for an extended length of time a new one is simply created and there is no follow up with where the file may have gone. Guard yourself, your information, and your health insurance company do not do business with this company.