_dta:
  1.  by Jean Roth , jroth@nber.org , 29 Sep 2015
  2.  by Jean Roth , jroth@nber.org , 29 Sep 2015

seq:
  1.  The NPI public use file has a wide shape with 50 other provider variables.
  2.  The seq variable indicates which Other Provider Identifier variable, othpid[1-50] , the UPIN-type identifier came from.

othpidty:
  1.  01, OTHER
  2.  02, MEDICARE UPIN
  3.  04, MEDICARE ID-TYPE UNSPECIFIED
  4.  05, MEDICAID
  5.  06, MEDICARE OSCAR/CERTIFICATION
  6.  07, MEDICARE NSC
  7.  08, MEDICARE PIN

entity:
  1.  1, Individual
  2.  2, Organization

  obs:       862,213                          
 vars:             9                          29 Sep 2015 23:32
 size:   100,878,921                          (_dta has notes)
----------------------------------------------------------------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
----------------------------------------------------------------------------------------------------------------------------------------
npi             str10   %10s                  National Provider Identifier (NPI)
seq             byte    %9.0g               * # of Other Provider Identifier in NPPES file
upin            str6    %9s                   Unique Physician Identification Number (UPIN)
othpidty        byte    %28.0g     othpidty * Other Provider Identifier Type Code
othpidst        str2    %9s                   Other Provider Identifier State
othpidiss       str75   %75s                  Other Provider Identifier Issuer
upintype        byte    %109.0g    upintype   Type of UPIN
entity          byte    %12.0g     entity   * Entity Type Code:  NPI is Individual or Organization
pcredential     str20   %20s                  Provider Credential Text
                                            * indicated variables have notes
----------------------------------------------------------------------------------------------------------------------------------------
Sorted by:  npi  upin
othpidty:
           1 Other 
           2 Medicare UPIN 
           4 Medicare ID-Type Unspecified 
           5 Medicaid 
           6 Medicare OSCAR/Certification 
           7 Medicare NSC 
           8 Medicare PIN 
upintype:
           1 Medical Doctors (Medical Doctors and Doctors of Osteopathy) 
           2 Non-physician Practicioners (Such as Anesthesia Assistants, Physician Assistants, Clinical Nurse Practioners) 
           3 Other Doctors (Such as Chiropractors, Dentists, Podiatrists, and Optometrists) 
           4 Group UPIN 
entity:
           1 Individual 
           2 Organization