A method and apparatus for billing entities for use of a medical device, which relates to the processing of regenerative cells to facilitate at least one of hard and soft tissue formation, are described. When an operator uses the medical device, a corresponding charge is determined. Billing for usage of the medical device is performed on a periodic or per-use basis. Communication over a network facilitates remote management and servicing of the medical device. Support is provided for automatic ordering of supplies consumed by the medical device.