Frequencies for first 10,000 rows of ownsr variable in namcs2012 dataset :

       Who owns the practice? - recoded |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  Blank |        551        5.51        5.51
           Physician or physician group |      8,265       82.65       88.16
Medical/academic health center; Communi |        314        3.14       91.30
Insurance company, health plan, or HMO; |        870        8.70      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016