_dta:
  1.  by Jean Roth , jroth@nber.org , 20 Apr 2015

  obs:     4,474,289                          
 vars:             2                          20 Apr 2015 17:19
 size:   134,228,670                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
npi             str10   %10s                  National Provider Identifier
                                                (NPI)
ploctel         str20   %20s                  Provider Business Practice
                                                Location Address Telephone
                                                Number
-------------------------------------------------------------------------------
Sorted by:  npi