Frequencies for first 10,000 rows of hpid variable in plan2016 dataset :

       HPID |
  (National |
Health Plan |
Identifier) |      Freq.     Percent        Cum.
------------+-----------------------------------
   7.00e+09 |        108        1.08        1.08
   7.02e+09 |         70        0.70        1.78
   7.06e+09 |         87        0.87        2.65
   7.08e+09 |         48        0.48        3.13
   7.19e+09 |         32        0.32        3.45
   7.21e+09 |        244        2.44        5.89
   7.27e+09 |        400        4.00        9.89
   7.31e+09 |          2        0.02        9.91
   7.35e+09 |         71        0.71       10.62
   7.35e+09 |         42        0.42       11.04
   7.50e+09 |         18        0.18       11.22
   7.59e+09 |         68        0.68       11.90
   7.70e+09 |         94        0.94       12.84
   7.73e+09 |         87        0.87       13.71
   7.82e+09 |         66        0.66       14.37
   7.83e+09 |         43        0.43       14.80
   7.89e+09 |         10        0.10       14.90
   7.91e+09 |         32        0.32       15.22
          . |      8,478       84.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Oct 2016