_dta:
  1.  by Jean Roth , jroth@nber.org , 14 Jan 2015

  obs:     1,545,346                          
 vars:             2                          14 Jan 2015 15:15
 size:    23,180,190                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
npi             str10   %10s                  National Provider Identifier
                                                (NPI)
pnameprefix     str5    %9s                   Provider Name Prefix Text
-------------------------------------------------------------------------------
Sorted by:  npi