Frequencies for first 10,000 rows of specr variable in namcs2013 dataset :

 Physician specialty - 14 |
                   groups |      Freq.     Percent        Cum.
--------------------------+-----------------------------------
  General/family practice |      1,625       16.25       16.25
        Internal medicine |      1,001       10.01       26.26
               Pediatrics |      1,382       13.82       40.08
          General surgery |        291        2.91       42.99
Obstetrics and gynecology |        671        6.71       49.70
       Orthopedic surgery |        551        5.51       55.21
  Cardiovascular diseases |        223        2.23       57.44
              Dermatology |        264        2.64       60.08
                  Urology |        225        2.25       62.33
               Psychiatry |        401        4.01       66.34
                Neurology |        262        2.62       68.96
            Ophthalmology |        488        4.88       73.84
           Otolaryngology |        259        2.59       76.43
        Other specialties |      2,357       23.57      100.00
--------------------------+-----------------------------------
                    Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017