_dta:
  1.  by Jean Roth , jroth@nber.org , 21 Nov 2015

  obs:       672,565                          
 vars:             2                          21 Nov 2015 07:13
 size:     7,398,215                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
npi             str10   %10s                  National Provider Identifier
                                                (NPI)
pprimtax2       str1    %9s                   Healthcare Provider Primary
                                                Taxonomy Switch 2
-------------------------------------------------------------------------------
Sorted by:  npi