We make every effort to cover all of our doctors so that there is no need to reschedule patients.  The larger the company/contract, the easier it is do to this because we will have multiple providers credentialed with the agency.  For smaller agencies, it is sometimes difficult to provide sick-call coverage as we would have only one provider credentialed/trained for your facility.  It's possible for smaller entities to work with us to come up with a single, multi-agency contract that would allow cross-coverage.