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

  obs:     4,656,131                          
 vars:             2                          21 Nov 2015 11:19
 size:   139,683,930                          (_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