For those hospitals interested in applying for the Medicare EHR Incentive Payments for 2011, the last day to begin the 90-day reporting period is July 3rd.  Hospitals and CAHs must demonstrate meaningful use for 90-days during the 2011 fiscal year (which ends September 30, 2011).  Hospitals and CAHs have until November 30, 2011 to register and attest to meaningful use.