Possible for one developer account for multiple organizations? What happens to my account when I leave an organization?

I am working on app development projects for 3 different companies now, in addition to my own hobby endeavors. Is my only option to have a separate account for each company? Or is it possible for my single developer account to be associated with multiple companies? Right now this particular account is under an organization I am going to be leaving soon. Does this mean I lose my developer account and have to create a whole new one all over again, losing all my past dev history, etc.? Thanks!