To save anyone else similarly curious the trouble, here's a sample record from the Humana data set:<p><pre><code> {'REPORTING_ENTITY_NAME': 'Humana Inc',
'REPORTING_ENTITY_TYPE': 'Health Insurance Issuer',
'LAST_UPDATED_ON': '2022-08-24',
'VERSION': '1.0.0',
'NPI': '1629053517,1659354272',
'TIN': '593279318',
'TYPE': 'ein',
'NEGOTIATION_ARRANGEMENT': 'ffs',
'NAME': 'Nasal Prosthesis Replacement See Also Code 21087',
'BILLING_CODE_TYPE': 'CDT',
'BILLING_CODE_TYPE_VERSION': '2022',
'BILLING_CODE': 'D5926',
'DESCRIPTION': 'Nasal Prosthesis Replacement See Also Code 21087',
'NEGOTIATED_TYPE': 'negotiated',
'NEGOTIATED_RATE': '906.98',
'EXPIRATION_DATE': '9999-12-31',
'SERVICE_CODE': '',
'BILLING_CLASS': 'professional',
'BILLING_CODE_MODIFIER': '',
'ADDITIONAL_INFO': '',
'BUNDLED_BILLING_CODE_TYPE': '',
'BUNDLED_BILLING_CODE_VERSION': '',
'BUNDLED_BILLING_CODE': '',
'BUNDLED_DESCRIPTION': ''}
</code></pre>
I think I agree about the negotiation arrangement