Frequencies for npi variable in cmhc_rpt2088_92_2011 dataset :

   national |
   provider |
 identifier |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        280      100.00      100.00
------------+-----------------------------------
      Total |        280      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2018