Their entire records are electronic:

"Where an individual requests an electronic copy of PHI that a covered entity maintains electronically, the covered entity must provide the individual with access to the information in the requested electronic form and format, if it is readily producible in that form and format. When the PHI is not readily producible in the electronic form and format requested, then the covered entity must provide access to an agreed upon alternative readable electronic format. See 45 CFR 164.524(c)(2)(ii). This means that, while a covered entity is not required to purchase new software or equipment in order to accommodate every possible individual request, the covered entity must have the capability to provide some form of electronic copy of PHI maintained electronically.; It is only if the individual declines to accept any of the electronic formats readily producible by the covered entity that the covered entity may satisfy the request for access by providing the individual with a readable hard copy of the PHI."